./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje --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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:51:46,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:51:46,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:51:46,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:51:46,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:51:46,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:51:46,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:51:46,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:51:46,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:51:46,202 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:51:46,202 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:51:46,203 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:51:46,203 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:51:46,203 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:51:46,204 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:51:46,204 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:51:46,204 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:51:46,204 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:51:46,205 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:51:46,205 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:51:46,205 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:51:46,209 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:51:46,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:51:46,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:51:46,210 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:51:46,210 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:51:46,210 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:51:46,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:51:46,211 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:51:46,211 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:51:46,212 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:51:46,212 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:51:46,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:51:46,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:51:46,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:51:46,214 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:51:46,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:51:46,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:51:46,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:51:46,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:51:46,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:51:46,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:51:46,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:51:46,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:51:46,218 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_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-09 04:51:46,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:51:46,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:51:46,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:51:46,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:51:46,608 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:51:46,609 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i Unable to find full path for "g++" [2024-11-09 04:51:48,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:51:48,952 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:51:48,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i [2024-11-09 04:51:48,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/8eb6e1310/c8a036a48fe74d07a9c386ca6ac6e120/FLAG7975b4bf3 [2024-11-09 04:51:49,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/8eb6e1310/c8a036a48fe74d07a9c386ca6ac6e120 [2024-11-09 04:51:49,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:51:49,007 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:51:49,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:49,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:51:49,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:51:49,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:49" (1/1) ... [2024-11-09 04:51:49,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cccb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:49, skipping insertion in model container [2024-11-09 04:51:49,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:49" (1/1) ... [2024-11-09 04:51:49,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:51:49,650 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,703 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,708 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,713 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,727 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,783 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,784 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,789 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,790 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,798 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,803 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,804 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,809 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,818 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:49,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:49,854 ERROR L321 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) [2024-11-09 04:51:49,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19604fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:49, skipping insertion in model container [2024-11-09 04:51:49,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:49,857 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 04:51:49,859 INFO L158 Benchmark]: Toolchain (without parser) took 850.52ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 114.8MB in the end (delta: -54.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 04:51:49,860 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:51:49,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 847.26ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 60.7MB in the beginning and 114.8MB in the end (delta: -54.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 04:51:49,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory was 98.6MB in the beginning and 98.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 847.26ms. Allocated memory was 123.7MB in the beginning and 161.5MB in the end (delta: 37.7MB). Free memory was 60.7MB in the beginning and 114.8MB in the end (delta: -54.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje --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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:51:52,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:51:52,456 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 04:51:52,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:51:52,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:51:52,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:51:52,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:51:52,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:51:52,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:51:52,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:51:52,511 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:51:52,512 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:51:52,512 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:51:52,513 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:51:52,513 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:51:52,513 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:51:52,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:51:52,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:51:52,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:51:52,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:51:52,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:51:52,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:51:52,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:51:52,519 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:51:52,519 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:51:52,519 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:51:52,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:51:52,520 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:51:52,521 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:51:52,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:51:52,521 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:51:52,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:51:52,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:51:52,523 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:51:52,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:51:52,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:51:52,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:51:52,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:51:52,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:51:52,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:51:52,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:51:52,527 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:51:52,527 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:52,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:51:52,528 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:51:52,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2024-11-09 04:51:52,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:51:53,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:51:53,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:51:53,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:51:53,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:51:53,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i Unable to find full path for "g++" [2024-11-09 04:51:55,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:51:55,619 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:51:55,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-1.i [2024-11-09 04:51:55,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/5150f554f/6f790fa0d40e4b3ea13311c4f21276b2/FLAG21b8a7dcc [2024-11-09 04:51:55,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/data/5150f554f/6f790fa0d40e4b3ea13311c4f21276b2 [2024-11-09 04:51:55,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:51:55,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:51:55,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:55,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:51:55,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:51:55,688 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:55" (1/1) ... [2024-11-09 04:51:55,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12806654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:55, skipping insertion in model container [2024-11-09 04:51:55,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:55" (1/1) ... [2024-11-09 04:51:55,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:51:56,324 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,383 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,392 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,402 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,421 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,480 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,480 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,488 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,489 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,496 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,499 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,504 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,505 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,515 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:56,554 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 04:51:56,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:51:56,610 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,642 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,644 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,646 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,651 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,680 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,682 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,683 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,685 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,686 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,687 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,688 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,691 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:51:56,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:56,703 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:51:56,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:56,822 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:51:56,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56 WrapperNode [2024-11-09 04:51:56,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:56,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:51:56,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:51:56,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:51:56,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:56,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:56,935 INFO L138 Inliner]: procedures = 180, calls = 274, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1015 [2024-11-09 04:51:56,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:51:56,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:51:56,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:51:56,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:51:56,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:56,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:56,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:56,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:51:57,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:51:57,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:51:57,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:51:57,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (1/1) ... [2024-11-09 04:51:57,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:51:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:57,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:51:57,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:51:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 04:51:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 04:51:57,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 04:51:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 04:51:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:51:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 04:51:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:51:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:51:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:51:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:51:57,397 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:51:57,398 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:51:57,401 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 04:52:02,966 INFO L? ?]: Removed 1078 outVars from TransFormulas that were not future-live. [2024-11-09 04:52:02,967 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:52:03,034 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:52:03,034 INFO L316 CfgBuilder]: Removed 58 assume(true) statements. [2024-11-09 04:52:03,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:52:03 BoogieIcfgContainer [2024-11-09 04:52:03,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:52:03,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:52:03,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:52:03,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:52:03,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:51:55" (1/3) ... [2024-11-09 04:52:03,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2d45a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:52:03, skipping insertion in model container [2024-11-09 04:52:03,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:56" (2/3) ... [2024-11-09 04:52:03,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2d45a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:52:03, skipping insertion in model container [2024-11-09 04:52:03,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:52:03" (3/3) ... [2024-11-09 04:52:03,051 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test3-1.i [2024-11-09 04:52:03,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:52:03,074 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 525 error locations. [2024-11-09 04:52:03,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:52:03,184 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2da43704, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:52:03,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2024-11-09 04:52:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 1064 states, 534 states have (on average 2.2116104868913857) internal successors, (1181), 1057 states have internal predecessors, (1181), 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) [2024-11-09 04:52:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:52:03,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:03,199 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:52:03,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:03,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1202725, now seen corresponding path program 1 times [2024-11-09 04:52:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822740078] [2024-11-09 04:52:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:03,219 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 [2024-11-09 04:52:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:03,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:03,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:03,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:03,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:03,452 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 [2024-11-09 04:52:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:03,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:03,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:03,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822740078] [2024-11-09 04:52:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822740078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:03,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:52:03,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220844294] [2024-11-09 04:52:03,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:03,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:03,565 INFO L87 Difference]: Start difference. First operand has 1064 states, 534 states have (on average 2.2116104868913857) internal successors, (1181), 1057 states have internal predecessors, (1181), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 04:52:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:05,836 INFO L93 Difference]: Finished difference Result 1061 states and 1126 transitions. [2024-11-09 04:52:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 04:52:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:05,865 INFO L225 Difference]: With dead ends: 1061 [2024-11-09 04:52:05,865 INFO L226 Difference]: Without dead ends: 1059 [2024-11-09 04:52:05,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:05,871 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 974 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:05,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 704 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 04:52:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-09 04:52:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1051. [2024-11-09 04:52:05,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 537 states have (on average 2.0595903165735567) internal successors, (1106), 1043 states have internal predecessors, (1106), 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) [2024-11-09 04:52:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1116 transitions. [2024-11-09 04:52:06,004 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1116 transitions. Word has length 4 [2024-11-09 04:52:06,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:06,005 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1116 transitions. [2024-11-09 04:52:06,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 04:52:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1116 transitions. [2024-11-09 04:52:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:52:06,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:06,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:52:06,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:06,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:06,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:06,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1202726, now seen corresponding path program 1 times [2024-11-09 04:52:06,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:06,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157385301] [2024-11-09 04:52:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:06,210 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 [2024-11-09 04:52:06,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:06,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:06,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:52:06,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:06,362 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 [2024-11-09 04:52:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:06,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:06,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:06,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157385301] [2024-11-09 04:52:06,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157385301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:06,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:52:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899677365] [2024-11-09 04:52:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:06,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:06,399 INFO L87 Difference]: Start difference. First operand 1051 states and 1116 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 04:52:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:09,641 INFO L93 Difference]: Finished difference Result 1459 states and 1561 transitions. [2024-11-09 04:52:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 04:52:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:09,647 INFO L225 Difference]: With dead ends: 1459 [2024-11-09 04:52:09,647 INFO L226 Difference]: Without dead ends: 1459 [2024-11-09 04:52:09,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:09,649 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 439 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:09,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1500 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 04:52:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2024-11-09 04:52:09,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1263. [2024-11-09 04:52:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 749 states have (on average 2.046728971962617) internal successors, (1533), 1254 states have internal predecessors, (1533), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1545 transitions. [2024-11-09 04:52:09,695 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1545 transitions. Word has length 4 [2024-11-09 04:52:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:09,695 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1545 transitions. [2024-11-09 04:52:09,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-09 04:52:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1545 transitions. [2024-11-09 04:52:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:52:09,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:09,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:52:09,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 04:52:09,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:09,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:09,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1204270, now seen corresponding path program 1 times [2024-11-09 04:52:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:09,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956850150] [2024-11-09 04:52:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:09,901 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 [2024-11-09 04:52:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:09,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:09,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:10,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:52:10,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:10,095 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-09 04:52:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:10,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:10,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:10,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956850150] [2024-11-09 04:52:10,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956850150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187131477] [2024-11-09 04:52:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:10,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:10,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 04:52:10,103 INFO L87 Difference]: Start difference. First operand 1263 states and 1545 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-09 04:52:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:12,916 INFO L93 Difference]: Finished difference Result 1660 states and 1976 transitions. [2024-11-09 04:52:12,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:12,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2024-11-09 04:52:12,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:12,922 INFO L225 Difference]: With dead ends: 1660 [2024-11-09 04:52:12,922 INFO L226 Difference]: Without dead ends: 1659 [2024-11-09 04:52:12,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 04:52:12,923 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 429 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1538 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:12,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1501 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 717 Invalid, 0 Unknown, 1538 Unchecked, 2.7s Time] [2024-11-09 04:52:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2024-11-09 04:52:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1263. [2024-11-09 04:52:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 749 states have (on average 2.0453938584779707) internal successors, (1532), 1254 states have internal predecessors, (1532), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1544 transitions. [2024-11-09 04:52:12,954 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1544 transitions. Word has length 4 [2024-11-09 04:52:12,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:12,955 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1544 transitions. [2024-11-09 04:52:12,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-09 04:52:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1544 transitions. [2024-11-09 04:52:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 04:52:12,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:12,956 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:12,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:13,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:13,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:13,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1654943313, now seen corresponding path program 1 times [2024-11-09 04:52:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453542092] [2024-11-09 04:52:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:13,158 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 [2024-11-09 04:52:13,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:13,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:13,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:13,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:52:13,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:13,330 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 [2024-11-09 04:52:13,345 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 [2024-11-09 04:52:13,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:13,460 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 [2024-11-09 04:52:13,484 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 04:52:13,484 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 [2024-11-09 04:52:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:13,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:13,517 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453542092] [2024-11-09 04:52:13,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453542092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:13,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:13,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:13,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815703914] [2024-11-09 04:52:13,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:13,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:13,519 INFO L87 Difference]: Start difference. First operand 1263 states and 1544 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:16,797 INFO L93 Difference]: Finished difference Result 1265 states and 1547 transitions. [2024-11-09 04:52:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 04:52:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:16,802 INFO L225 Difference]: With dead ends: 1265 [2024-11-09 04:52:16,802 INFO L226 Difference]: Without dead ends: 1265 [2024-11-09 04:52:16,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:16,803 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 1071 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:16,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 424 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 04:52:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2024-11-09 04:52:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1039. [2024-11-09 04:52:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 537 states have (on average 2.031657355679702) internal successors, (1091), 1031 states have internal predecessors, (1091), 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) [2024-11-09 04:52:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1101 transitions. [2024-11-09 04:52:16,827 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1101 transitions. Word has length 8 [2024-11-09 04:52:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:16,828 INFO L471 AbstractCegarLoop]: Abstraction has 1039 states and 1101 transitions. [2024-11-09 04:52:16,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:16,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1101 transitions. [2024-11-09 04:52:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:52:16,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:16,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:16,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:17,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:17,030 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:17,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 236364828, now seen corresponding path program 1 times [2024-11-09 04:52:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928956310] [2024-11-09 04:52:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:17,031 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 [2024-11-09 04:52:17,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:17,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:17,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:17,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:17,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:17,187 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 [2024-11-09 04:52:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:17,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:17,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928956310] [2024-11-09 04:52:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928956310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:17,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:52:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2473950] [2024-11-09 04:52:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:17,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:17,205 INFO L87 Difference]: Start difference. First operand 1039 states and 1101 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:19,423 INFO L93 Difference]: Finished difference Result 1378 states and 1473 transitions. [2024-11-09 04:52:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:19,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 04:52:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:19,428 INFO L225 Difference]: With dead ends: 1378 [2024-11-09 04:52:19,428 INFO L226 Difference]: Without dead ends: 1378 [2024-11-09 04:52:19,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:19,429 INFO L432 NwaCegarLoop]: 966 mSDtfsCounter, 937 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:19,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1218 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 04:52:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-09 04:52:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 991. [2024-11-09 04:52:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 537 states have (on average 1.9422718808193669) internal successors, (1043), 983 states have internal predecessors, (1043), 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) [2024-11-09 04:52:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1053 transitions. [2024-11-09 04:52:19,454 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1053 transitions. Word has length 9 [2024-11-09 04:52:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:19,454 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1053 transitions. [2024-11-09 04:52:19,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1053 transitions. [2024-11-09 04:52:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:52:19,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:19,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:19,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:19,657 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:19,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 236364829, now seen corresponding path program 1 times [2024-11-09 04:52:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:19,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284920355] [2024-11-09 04:52:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:19,659 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 [2024-11-09 04:52:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:19,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:19,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:19,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:52:19,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:19,823 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 [2024-11-09 04:52:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:19,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:19,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284920355] [2024-11-09 04:52:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284920355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:19,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:52:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515842658] [2024-11-09 04:52:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:19,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:19,863 INFO L87 Difference]: Start difference. First operand 991 states and 1053 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:23,230 INFO L93 Difference]: Finished difference Result 1465 states and 1563 transitions. [2024-11-09 04:52:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 04:52:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:23,234 INFO L225 Difference]: With dead ends: 1465 [2024-11-09 04:52:23,234 INFO L226 Difference]: Without dead ends: 1465 [2024-11-09 04:52:23,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:23,235 INFO L432 NwaCegarLoop]: 1158 mSDtfsCounter, 697 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:23,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1589 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 04:52:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-11-09 04:52:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1018. [2024-11-09 04:52:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 574 states have (on average 1.9285714285714286) internal successors, (1107), 1010 states have internal predecessors, (1107), 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) [2024-11-09 04:52:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1117 transitions. [2024-11-09 04:52:23,260 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1117 transitions. Word has length 9 [2024-11-09 04:52:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:23,261 INFO L471 AbstractCegarLoop]: Abstraction has 1018 states and 1117 transitions. [2024-11-09 04:52:23,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:23,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1117 transitions. [2024-11-09 04:52:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:52:23,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:23,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:23,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:23,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:23,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr523ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:23,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:23,463 INFO L85 PathProgramCache]: Analyzing trace with hash 997992421, now seen corresponding path program 1 times [2024-11-09 04:52:23,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:23,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160703953] [2024-11-09 04:52:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:23,464 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 [2024-11-09 04:52:23,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:23,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:23,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:23,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:52:23,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:23,815 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-09 04:52:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:23,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:23,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:23,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160703953] [2024-11-09 04:52:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160703953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:23,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715443757] [2024-11-09 04:52:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:23,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 04:52:23,823 INFO L87 Difference]: Start difference. First operand 1018 states and 1117 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:26,158 INFO L93 Difference]: Finished difference Result 1417 states and 1551 transitions. [2024-11-09 04:52:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:52:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:26,162 INFO L225 Difference]: With dead ends: 1417 [2024-11-09 04:52:26,162 INFO L226 Difference]: Without dead ends: 1415 [2024-11-09 04:52:26,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-09 04:52:26,164 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 419 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1467 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:26,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1423 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 1467 Unchecked, 2.3s Time] [2024-11-09 04:52:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2024-11-09 04:52:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1153. [2024-11-09 04:52:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 707 states have (on average 1.908062234794908) internal successors, (1349), 1143 states have internal predecessors, (1349), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1363 transitions. [2024-11-09 04:52:26,192 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1363 transitions. Word has length 13 [2024-11-09 04:52:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:26,192 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1363 transitions. [2024-11-09 04:52:26,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1363 transitions. [2024-11-09 04:52:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:52:26,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:26,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:26,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:26,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:26,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:26,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash 997976629, now seen corresponding path program 1 times [2024-11-09 04:52:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889911057] [2024-11-09 04:52:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:26,396 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 [2024-11-09 04:52:26,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:26,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:26,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:26,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:52:26,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:26,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:26,658 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:26,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889911057] [2024-11-09 04:52:26,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889911057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:26,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:26,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:26,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864091361] [2024-11-09 04:52:26,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:26,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:26,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:26,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:26,661 INFO L87 Difference]: Start difference. First operand 1153 states and 1363 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:27,482 INFO L93 Difference]: Finished difference Result 1533 states and 1751 transitions. [2024-11-09 04:52:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:52:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:27,487 INFO L225 Difference]: With dead ends: 1533 [2024-11-09 04:52:27,487 INFO L226 Difference]: Without dead ends: 1531 [2024-11-09 04:52:27,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:27,488 INFO L432 NwaCegarLoop]: 1102 mSDtfsCounter, 453 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:27,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 3050 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 04:52:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-11-09 04:52:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1352. [2024-11-09 04:52:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 906 states have (on average 1.8940397350993377) internal successors, (1716), 1342 states have internal predecessors, (1716), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1730 transitions. [2024-11-09 04:52:27,515 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1730 transitions. Word has length 13 [2024-11-09 04:52:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:27,516 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 1730 transitions. [2024-11-09 04:52:27,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1730 transitions. [2024-11-09 04:52:27,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:52:27,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:27,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:27,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:27,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:27,717 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:27,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash 441370107, now seen corresponding path program 1 times [2024-11-09 04:52:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557350215] [2024-11-09 04:52:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:27,719 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 [2024-11-09 04:52:27,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:27,720 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:27,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:27,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:52:27,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:27,885 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:27,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:27,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557350215] [2024-11-09 04:52:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557350215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:27,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791757650] [2024-11-09 04:52:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:27,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:27,888 INFO L87 Difference]: Start difference. First operand 1352 states and 1730 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:52:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:27,921 INFO L93 Difference]: Finished difference Result 1271 states and 1595 transitions. [2024-11-09 04:52:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2024-11-09 04:52:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:27,926 INFO L225 Difference]: With dead ends: 1271 [2024-11-09 04:52:27,926 INFO L226 Difference]: Without dead ends: 1271 [2024-11-09 04:52:27,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:27,927 INFO L432 NwaCegarLoop]: 977 mSDtfsCounter, 71 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:27,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1891 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:52:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-09 04:52:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1271. [2024-11-09 04:52:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 849 states have (on average 1.862190812720848) internal successors, (1581), 1261 states have internal predecessors, (1581), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1595 transitions. [2024-11-09 04:52:27,956 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1595 transitions. Word has length 15 [2024-11-09 04:52:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:27,956 INFO L471 AbstractCegarLoop]: Abstraction has 1271 states and 1595 transitions. [2024-11-09 04:52:27,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2024-11-09 04:52:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1595 transitions. [2024-11-09 04:52:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:52:27,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:27,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:27,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:28,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:28,158 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr354REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:28,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 799354906, now seen corresponding path program 1 times [2024-11-09 04:52:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:28,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960331104] [2024-11-09 04:52:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:28,159 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 [2024-11-09 04:52:28,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:28,160 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:28,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:28,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:28,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:28,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:28,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960331104] [2024-11-09 04:52:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960331104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:28,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:28,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:28,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821061921] [2024-11-09 04:52:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:28,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:28,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:28,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:28,323 INFO L87 Difference]: Start difference. First operand 1271 states and 1595 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) [2024-11-09 04:52:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:28,413 INFO L93 Difference]: Finished difference Result 1233 states and 1508 transitions. [2024-11-09 04:52:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:52:28,413 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 [2024-11-09 04:52:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:28,416 INFO L225 Difference]: With dead ends: 1233 [2024-11-09 04:52:28,416 INFO L226 Difference]: Without dead ends: 1233 [2024-11-09 04:52:28,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:28,417 INFO L432 NwaCegarLoop]: 932 mSDtfsCounter, 48 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:28,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2770 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2024-11-09 04:52:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1233. [2024-11-09 04:52:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 825 states have (on average 1.8109090909090908) internal successors, (1494), 1223 states have internal predecessors, (1494), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1508 transitions. [2024-11-09 04:52:28,438 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1508 transitions. Word has length 16 [2024-11-09 04:52:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:28,439 INFO L471 AbstractCegarLoop]: Abstraction has 1233 states and 1508 transitions. [2024-11-09 04:52:28,439 INFO L472 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) [2024-11-09 04:52:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1508 transitions. [2024-11-09 04:52:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:52:28,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:28,440 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:28,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:28,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:28,641 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:28,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash -539745472, now seen corresponding path program 1 times [2024-11-09 04:52:28,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881054216] [2024-11-09 04:52:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:28,642 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 [2024-11-09 04:52:28,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:28,643 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:28,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:28,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:52:28,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:28,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:28,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881054216] [2024-11-09 04:52:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881054216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:28,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:28,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398551376] [2024-11-09 04:52:28,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:28,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:28,861 INFO L87 Difference]: Start difference. First operand 1233 states and 1508 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2024-11-09 04:52:28,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:28,902 INFO L93 Difference]: Finished difference Result 1171 states and 1418 transitions. [2024-11-09 04:52:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 [2024-11-09 04:52:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:28,906 INFO L225 Difference]: With dead ends: 1171 [2024-11-09 04:52:28,907 INFO L226 Difference]: Without dead ends: 1171 [2024-11-09 04:52:28,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:28,908 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 71 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:28,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1731 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:52:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-09 04:52:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2024-11-09 04:52:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 787 states have (on average 1.7839898348157561) internal successors, (1404), 1161 states have internal predecessors, (1404), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1418 transitions. [2024-11-09 04:52:28,940 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1418 transitions. Word has length 20 [2024-11-09 04:52:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:28,941 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1418 transitions. [2024-11-09 04:52:28,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2024-11-09 04:52:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1418 transitions. [2024-11-09 04:52:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 04:52:28,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:28,943 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:28,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:29,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:29,144 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:29,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 449542154, now seen corresponding path program 1 times [2024-11-09 04:52:29,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:29,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590118560] [2024-11-09 04:52:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:29,145 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 [2024-11-09 04:52:29,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:29,146 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:29,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:29,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:29,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:29,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:29,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:29,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590118560] [2024-11-09 04:52:29,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590118560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:29,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:29,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872220535] [2024-11-09 04:52:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:29,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:29,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:29,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:29,365 INFO L87 Difference]: Start difference. First operand 1171 states and 1418 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-09 04:52:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:29,481 INFO L93 Difference]: Finished difference Result 1141 states and 1360 transitions. [2024-11-09 04:52:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:52:29,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2024-11-09 04:52:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:29,486 INFO L225 Difference]: With dead ends: 1141 [2024-11-09 04:52:29,486 INFO L226 Difference]: Without dead ends: 1141 [2024-11-09 04:52:29,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:29,487 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 48 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:29,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2530 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-09 04:52:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2024-11-09 04:52:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 771 states have (on average 1.7457846952010376) internal successors, (1346), 1131 states have internal predecessors, (1346), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1360 transitions. [2024-11-09 04:52:29,513 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1360 transitions. Word has length 21 [2024-11-09 04:52:29,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:29,514 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1360 transitions. [2024-11-09 04:52:29,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-09 04:52:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1360 transitions. [2024-11-09 04:52:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 04:52:29,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:29,515 INFO L215 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] [2024-11-09 04:52:29,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:29,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:29,721 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr368REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:29,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:29,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1379197992, now seen corresponding path program 1 times [2024-11-09 04:52:29,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:29,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486603318] [2024-11-09 04:52:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:29,722 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 [2024-11-09 04:52:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:29,725 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:29,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:29,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:52:29,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:29,890 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 [2024-11-09 04:52:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:30,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:30,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:30,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486603318] [2024-11-09 04:52:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486603318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:30,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:30,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:30,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754848052] [2024-11-09 04:52:30,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:30,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:30,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:30,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:30,011 INFO L87 Difference]: Start difference. First operand 1141 states and 1360 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 04:52:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:32,183 INFO L93 Difference]: Finished difference Result 1157 states and 1368 transitions. [2024-11-09 04:52:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:32,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-09 04:52:32,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:32,186 INFO L225 Difference]: With dead ends: 1157 [2024-11-09 04:52:32,186 INFO L226 Difference]: Without dead ends: 1157 [2024-11-09 04:52:32,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:32,188 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 776 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:32,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1040 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 04:52:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-09 04:52:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1137. [2024-11-09 04:52:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 771 states have (on average 1.7302204928664073) internal successors, (1334), 1127 states have internal predecessors, (1334), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1348 transitions. [2024-11-09 04:52:32,208 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1348 transitions. Word has length 30 [2024-11-09 04:52:32,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:32,208 INFO L471 AbstractCegarLoop]: Abstraction has 1137 states and 1348 transitions. [2024-11-09 04:52:32,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 04:52:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1348 transitions. [2024-11-09 04:52:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 04:52:32,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:32,210 INFO L215 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] [2024-11-09 04:52:32,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:32,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:32,411 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:32,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1379197993, now seen corresponding path program 1 times [2024-11-09 04:52:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248560675] [2024-11-09 04:52:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:32,412 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 [2024-11-09 04:52:32,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:32,417 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:32,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:32,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:52:32,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:32,594 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 [2024-11-09 04:52:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:32,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:32,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248560675] [2024-11-09 04:52:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248560675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:32,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088180367] [2024-11-09 04:52:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:32,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:32,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:32,883 INFO L87 Difference]: Start difference. First operand 1137 states and 1348 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 04:52:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:36,202 INFO L93 Difference]: Finished difference Result 1615 states and 1952 transitions. [2024-11-09 04:52:36,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:36,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-09 04:52:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:36,206 INFO L225 Difference]: With dead ends: 1615 [2024-11-09 04:52:36,206 INFO L226 Difference]: Without dead ends: 1615 [2024-11-09 04:52:36,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:36,207 INFO L432 NwaCegarLoop]: 722 mSDtfsCounter, 365 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:36,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1621 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 04:52:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2024-11-09 04:52:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1452. [2024-11-09 04:52:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1084 states have (on average 1.757380073800738) internal successors, (1905), 1440 states have internal predecessors, (1905), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:52:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1923 transitions. [2024-11-09 04:52:36,234 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1923 transitions. Word has length 30 [2024-11-09 04:52:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:36,234 INFO L471 AbstractCegarLoop]: Abstraction has 1452 states and 1923 transitions. [2024-11-09 04:52:36,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-09 04:52:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1923 transitions. [2024-11-09 04:52:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 04:52:36,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:36,236 INFO L215 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] [2024-11-09 04:52:36,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:36,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:36,439 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:36,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash -925089160, now seen corresponding path program 1 times [2024-11-09 04:52:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476071297] [2024-11-09 04:52:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:36,441 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 [2024-11-09 04:52:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:36,444 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:36,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:36,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:52:36,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:36,657 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 [2024-11-09 04:52:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:36,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:36,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476071297] [2024-11-09 04:52:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476071297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:36,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136616963] [2024-11-09 04:52:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:36,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:36,767 INFO L87 Difference]: Start difference. First operand 1452 states and 1923 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 04:52:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:39,468 INFO L93 Difference]: Finished difference Result 1903 states and 2499 transitions. [2024-11-09 04:52:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:39,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-09 04:52:39,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:39,475 INFO L225 Difference]: With dead ends: 1903 [2024-11-09 04:52:39,475 INFO L226 Difference]: Without dead ends: 1903 [2024-11-09 04:52:39,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:39,476 INFO L432 NwaCegarLoop]: 790 mSDtfsCounter, 784 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:39,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1593 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 04:52:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2024-11-09 04:52:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1448. [2024-11-09 04:52:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1084 states have (on average 1.75) internal successors, (1897), 1436 states have internal predecessors, (1897), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:52:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1915 transitions. [2024-11-09 04:52:39,504 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1915 transitions. Word has length 35 [2024-11-09 04:52:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:39,505 INFO L471 AbstractCegarLoop]: Abstraction has 1448 states and 1915 transitions. [2024-11-09 04:52:39,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 04:52:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1915 transitions. [2024-11-09 04:52:39,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 04:52:39,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:39,506 INFO L215 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] [2024-11-09 04:52:39,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 04:52:39,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:39,707 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:39,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -925089159, now seen corresponding path program 1 times [2024-11-09 04:52:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64371786] [2024-11-09 04:52:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:39,709 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 [2024-11-09 04:52:39,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:39,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:39,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-09 04:52:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:39,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:52:39,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:39,947 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 [2024-11-09 04:52:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:40,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:40,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:40,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64371786] [2024-11-09 04:52:40,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64371786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:40,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:40,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:40,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920651831] [2024-11-09 04:52:40,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:40,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:40,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:40,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:40,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:40,218 INFO L87 Difference]: Start difference. First operand 1448 states and 1915 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 04:52:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:44,044 INFO L93 Difference]: Finished difference Result 1963 states and 2523 transitions. [2024-11-09 04:52:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-09 04:52:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:44,063 INFO L225 Difference]: With dead ends: 1963 [2024-11-09 04:52:44,063 INFO L226 Difference]: Without dead ends: 1963 [2024-11-09 04:52:44,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:44,064 INFO L432 NwaCegarLoop]: 1071 mSDtfsCounter, 540 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:44,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 2124 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 04:52:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2024-11-09 04:52:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1444. [2024-11-09 04:52:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1084 states have (on average 1.742619926199262) internal successors, (1889), 1432 states have internal predecessors, (1889), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:52:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1907 transitions. [2024-11-09 04:52:44,094 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1907 transitions. Word has length 35 [2024-11-09 04:52:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:44,094 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1907 transitions. [2024-11-09 04:52:44,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-09 04:52:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1907 transitions. [2024-11-09 04:52:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:52:44,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:44,096 INFO L215 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] [2024-11-09 04:52:44,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:44,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:44,297 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:44,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1490216113, now seen corresponding path program 1 times [2024-11-09 04:52:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699069148] [2024-11-09 04:52:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:44,298 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 [2024-11-09 04:52:44,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:44,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:44,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (18)] Waiting until timeout for monitored process [2024-11-09 04:52:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:44,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:44,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:44,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:44,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699069148] [2024-11-09 04:52:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699069148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:44,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:44,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461522459] [2024-11-09 04:52:44,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:44,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:44,544 INFO L87 Difference]: Start difference. First operand 1444 states and 1907 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-09 04:52:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:44,630 INFO L93 Difference]: Finished difference Result 1414 states and 1857 transitions. [2024-11-09 04:52:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:52:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2024-11-09 04:52:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:44,635 INFO L225 Difference]: With dead ends: 1414 [2024-11-09 04:52:44,635 INFO L226 Difference]: Without dead ends: 1414 [2024-11-09 04:52:44,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:44,636 INFO L432 NwaCegarLoop]: 842 mSDtfsCounter, 27 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:44,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2489 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:44,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-09 04:52:44,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1414. [2024-11-09 04:52:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1054 states have (on average 1.7447817836812145) internal successors, (1839), 1402 states have internal predecessors, (1839), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:52:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1857 transitions. [2024-11-09 04:52:44,660 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1857 transitions. Word has length 49 [2024-11-09 04:52:44,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:44,661 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 1857 transitions. [2024-11-09 04:52:44,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-11-09 04:52:44,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1857 transitions. [2024-11-09 04:52:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 04:52:44,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:44,662 INFO L215 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] [2024-11-09 04:52:44,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (18)] Ended with exit code 0 [2024-11-09 04:52:44,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:44,863 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:44,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash -391326663, now seen corresponding path program 1 times [2024-11-09 04:52:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:44,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145312635] [2024-11-09 04:52:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:44,864 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 [2024-11-09 04:52:44,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:44,865 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:44,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 04:52:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:45,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:45,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:45,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:45,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145312635] [2024-11-09 04:52:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145312635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:45,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123638846] [2024-11-09 04:52:45,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:45,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:45,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:45,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:45,232 INFO L87 Difference]: Start difference. First operand 1414 states and 1857 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:45,323 INFO L93 Difference]: Finished difference Result 1402 states and 1837 transitions. [2024-11-09 04:52:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:52:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 04:52:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:45,330 INFO L225 Difference]: With dead ends: 1402 [2024-11-09 04:52:45,330 INFO L226 Difference]: Without dead ends: 1402 [2024-11-09 04:52:45,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:45,331 INFO L432 NwaCegarLoop]: 838 mSDtfsCounter, 21 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:45,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2483 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2024-11-09 04:52:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1402. [2024-11-09 04:52:45,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1042 states have (on average 1.7456813819577734) internal successors, (1819), 1390 states have internal predecessors, (1819), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:52:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1837 transitions. [2024-11-09 04:52:45,366 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1837 transitions. Word has length 54 [2024-11-09 04:52:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:45,367 INFO L471 AbstractCegarLoop]: Abstraction has 1402 states and 1837 transitions. [2024-11-09 04:52:45,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1837 transitions. [2024-11-09 04:52:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 04:52:45,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:45,368 INFO L215 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] [2024-11-09 04:52:45,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-09 04:52:45,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:45,569 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:45,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash -227924733, now seen corresponding path program 1 times [2024-11-09 04:52:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:45,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420456441] [2024-11-09 04:52:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:45,570 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 [2024-11-09 04:52:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:45,572 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:45,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (20)] Waiting until timeout for monitored process [2024-11-09 04:52:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:45,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:52:45,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:45,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:45,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420456441] [2024-11-09 04:52:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420456441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:45,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172447544] [2024-11-09 04:52:45,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:45,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:52:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:52:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:45,869 INFO L87 Difference]: Start difference. First operand 1402 states and 1837 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-09 04:52:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:45,976 INFO L93 Difference]: Finished difference Result 1191 states and 1284 transitions. [2024-11-09 04:52:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:52:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-09 04:52:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:45,984 INFO L225 Difference]: With dead ends: 1191 [2024-11-09 04:52:45,985 INFO L226 Difference]: Without dead ends: 1191 [2024-11-09 04:52:45,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:52:45,987 INFO L432 NwaCegarLoop]: 916 mSDtfsCounter, 103 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:45,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1700 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2024-11-09 04:52:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1038. [2024-11-09 04:52:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 680 states have (on average 1.6308823529411764) internal successors, (1109), 1028 states have internal predecessors, (1109), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 04:52:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1123 transitions. [2024-11-09 04:52:46,004 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1123 transitions. Word has length 57 [2024-11-09 04:52:46,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:46,005 INFO L471 AbstractCegarLoop]: Abstraction has 1038 states and 1123 transitions. [2024-11-09 04:52:46,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-09 04:52:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1123 transitions. [2024-11-09 04:52:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 04:52:46,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:46,006 INFO L215 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] [2024-11-09 04:52:46,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (20)] Ended with exit code 0 [2024-11-09 04:52:46,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:46,210 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:46,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:46,210 INFO L85 PathProgramCache]: Analyzing trace with hash -574217199, now seen corresponding path program 1 times [2024-11-09 04:52:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836462566] [2024-11-09 04:52:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:46,211 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 [2024-11-09 04:52:46,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:46,214 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:46,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (21)] Waiting until timeout for monitored process [2024-11-09 04:52:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:46,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:52:46,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:46,486 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:52:46,487 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:52:46,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:52:46,495 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 [2024-11-09 04:52:46,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:46,585 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 [2024-11-09 04:52:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:46,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:46,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:46,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836462566] [2024-11-09 04:52:46,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836462566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:46,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:52:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923049133] [2024-11-09 04:52:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:46,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:52:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:52:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:52:46,657 INFO L87 Difference]: Start difference. First operand 1038 states and 1123 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-09 04:52:48,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:48,157 INFO L93 Difference]: Finished difference Result 1263 states and 1364 transitions. [2024-11-09 04:52:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:52:48,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 60 [2024-11-09 04:52:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:48,161 INFO L225 Difference]: With dead ends: 1263 [2024-11-09 04:52:48,161 INFO L226 Difference]: Without dead ends: 1260 [2024-11-09 04:52:48,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:52:48,162 INFO L432 NwaCegarLoop]: 821 mSDtfsCounter, 1366 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:48,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 3118 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 04:52:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-11-09 04:52:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 985. [2024-11-09 04:52:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 628 states have (on average 1.6815286624203822) internal successors, (1056), 976 states have internal predecessors, (1056), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1068 transitions. [2024-11-09 04:52:48,175 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1068 transitions. Word has length 60 [2024-11-09 04:52:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:48,176 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1068 transitions. [2024-11-09 04:52:48,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-09 04:52:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1068 transitions. [2024-11-09 04:52:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 04:52:48,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:48,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:48,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (21)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:48,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:48,377 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:48,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash -775502995, now seen corresponding path program 1 times [2024-11-09 04:52:48,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96281813] [2024-11-09 04:52:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:48,378 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 [2024-11-09 04:52:48,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:48,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:48,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (22)] Waiting until timeout for monitored process [2024-11-09 04:52:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:48,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:52:48,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:48,717 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 [2024-11-09 04:52:48,726 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 [2024-11-09 04:52:49,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:49,447 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 [2024-11-09 04:52:49,463 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 04:52:49,463 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 [2024-11-09 04:52:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:49,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:49,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:49,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96281813] [2024-11-09 04:52:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96281813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:49,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:49,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:52:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898143233] [2024-11-09 04:52:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:49,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:52:49,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:52:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:49,477 INFO L87 Difference]: Start difference. First operand 985 states and 1068 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-09 04:52:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:52,225 INFO L93 Difference]: Finished difference Result 1316 states and 1424 transitions. [2024-11-09 04:52:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:52:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2024-11-09 04:52:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:52,229 INFO L225 Difference]: With dead ends: 1316 [2024-11-09 04:52:52,229 INFO L226 Difference]: Without dead ends: 1316 [2024-11-09 04:52:52,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:52:52,230 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 1041 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:52,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 461 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 04:52:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2024-11-09 04:52:52,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 910. [2024-11-09 04:52:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 591 states have (on average 1.5972927241962775) internal successors, (944), 901 states have internal predecessors, (944), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 956 transitions. [2024-11-09 04:52:52,247 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 956 transitions. Word has length 62 [2024-11-09 04:52:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:52,248 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 956 transitions. [2024-11-09 04:52:52,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 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) [2024-11-09 04:52:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 956 transitions. [2024-11-09 04:52:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 04:52:52,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:52,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:52,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (22)] Ended with exit code 0 [2024-11-09 04:52:52,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:52,450 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:52,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:52,450 INFO L85 PathProgramCache]: Analyzing trace with hash -489791377, now seen corresponding path program 1 times [2024-11-09 04:52:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808238563] [2024-11-09 04:52:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:52,451 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 [2024-11-09 04:52:52,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:52,455 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:52,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (23)] Waiting until timeout for monitored process [2024-11-09 04:52:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:52,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:52:52,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:52,856 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 [2024-11-09 04:52:52,888 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 19 treesize of output 1 [2024-11-09 04:52:52,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 04:52:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:52,930 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:52,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:52,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808238563] [2024-11-09 04:52:52,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808238563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:52,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:52,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148568457] [2024-11-09 04:52:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:52,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:52:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:52:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:52,933 INFO L87 Difference]: Start difference. First operand 910 states and 956 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 04:52:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:55,594 INFO L93 Difference]: Finished difference Result 909 states and 955 transitions. [2024-11-09 04:52:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:52:55,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-09 04:52:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:55,597 INFO L225 Difference]: With dead ends: 909 [2024-11-09 04:52:55,597 INFO L226 Difference]: Without dead ends: 909 [2024-11-09 04:52:55,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:52:55,598 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 2 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:55,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2100 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 04:52:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-09 04:52:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2024-11-09 04:52:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 591 states have (on average 1.595600676818951) internal successors, (943), 900 states have internal predecessors, (943), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 955 transitions. [2024-11-09 04:52:55,613 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 955 transitions. Word has length 67 [2024-11-09 04:52:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:55,614 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 955 transitions. [2024-11-09 04:52:55,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 04:52:55,614 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 955 transitions. [2024-11-09 04:52:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 04:52:55,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:55,615 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:55,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (23)] Ended with exit code 0 [2024-11-09 04:52:55,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:55,819 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:55,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash -489791376, now seen corresponding path program 1 times [2024-11-09 04:52:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:55,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221027917] [2024-11-09 04:52:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:55,821 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 [2024-11-09 04:52:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:55,822 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:55,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (24)] Waiting until timeout for monitored process [2024-11-09 04:52:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:56,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:52:56,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:56,136 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 [2024-11-09 04:52:56,166 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 19 treesize of output 1 [2024-11-09 04:52:56,173 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 13 treesize of output 9 [2024-11-09 04:52:56,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-09 04:52:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:56,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:56,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221027917] [2024-11-09 04:52:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221027917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:56,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:56,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:52:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982076945] [2024-11-09 04:52:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:56,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:52:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:52:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:56,281 INFO L87 Difference]: Start difference. First operand 909 states and 955 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 04:52:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:59,610 INFO L93 Difference]: Finished difference Result 908 states and 954 transitions. [2024-11-09 04:52:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:52:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-09 04:52:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:59,620 INFO L225 Difference]: With dead ends: 908 [2024-11-09 04:52:59,620 INFO L226 Difference]: Without dead ends: 908 [2024-11-09 04:52:59,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:52:59,622 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 1 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:59,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2124 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 04:52:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-11-09 04:52:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2024-11-09 04:52:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 590 states have (on average 1.5966101694915253) internal successors, (942), 899 states have internal predecessors, (942), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:59,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 954 transitions. [2024-11-09 04:52:59,640 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 954 transitions. Word has length 67 [2024-11-09 04:52:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:59,640 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 954 transitions. [2024-11-09 04:52:59,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-09 04:52:59,641 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 954 transitions. [2024-11-09 04:52:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 04:52:59,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:59,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:59,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (24)] Ended with exit code 0 [2024-11-09 04:52:59,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:52:59,842 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:52:59,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash 597210550, now seen corresponding path program 1 times [2024-11-09 04:52:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39615809] [2024-11-09 04:52:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:59,843 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 [2024-11-09 04:52:59,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:59,844 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:52:59,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (25)] Waiting until timeout for monitored process [2024-11-09 04:53:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:00,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:53:00,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:00,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:00,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39615809] [2024-11-09 04:53:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39615809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:53:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:53:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123858838] [2024-11-09 04:53:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:00,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:53:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:53:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:53:00,197 INFO L87 Difference]: Start difference. First operand 908 states and 954 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:53:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:00,264 INFO L93 Difference]: Finished difference Result 911 states and 958 transitions. [2024-11-09 04:53:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:53:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-09 04:53:00,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:00,270 INFO L225 Difference]: With dead ends: 911 [2024-11-09 04:53:00,271 INFO L226 Difference]: Without dead ends: 911 [2024-11-09 04:53:00,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:53:00,272 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 0 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:00,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2428 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:53:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-09 04:53:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 911. [2024-11-09 04:53:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 592 states have (on average 1.5962837837837838) internal successors, (945), 902 states have internal predecessors, (945), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 04:53:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 958 transitions. [2024-11-09 04:53:00,293 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 958 transitions. Word has length 75 [2024-11-09 04:53:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:00,294 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 958 transitions. [2024-11-09 04:53:00,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:53:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 958 transitions. [2024-11-09 04:53:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 04:53:00,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:00,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:00,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (25)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:00,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 04:53:00,496 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:53:00,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1943144359, now seen corresponding path program 1 times [2024-11-09 04:53:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941965825] [2024-11-09 04:53:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:00,497 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 [2024-11-09 04:53:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:00,499 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:53:00,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (26)] Waiting until timeout for monitored process [2024-11-09 04:53:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:00,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:53:00,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:00,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:00,925 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941965825] [2024-11-09 04:53:00,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941965825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:00,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1954997344] [2024-11-09 04:53:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:00,926 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:00,932 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:00,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 04:53:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:01,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:53:01,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:01,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1954997344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18926322] [2024-11-09 04:53:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:01,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:01,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:01,650 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:01,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 04:53:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:01,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:53:01,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:02,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18926322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:02,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:53:02,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 04:53:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785117621] [2024-11-09 04:53:02,057 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:53:02,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:53:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:53:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:53:02,058 INFO L87 Difference]: Start difference. First operand 911 states and 958 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:53:02,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:02,217 INFO L93 Difference]: Finished difference Result 923 states and 975 transitions. [2024-11-09 04:53:02,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:53:02,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2024-11-09 04:53:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:02,220 INFO L225 Difference]: With dead ends: 923 [2024-11-09 04:53:02,220 INFO L226 Difference]: Without dead ends: 923 [2024-11-09 04:53:02,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:53:02,221 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 8 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:02,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4042 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:53:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-09 04:53:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 921. [2024-11-09 04:53:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 601 states have (on average 1.5973377703826954) internal successors, (960), 911 states have internal predecessors, (960), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 04:53:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 973 transitions. [2024-11-09 04:53:02,234 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 973 transitions. Word has length 76 [2024-11-09 04:53:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:02,234 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 973 transitions. [2024-11-09 04:53:02,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:53:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 973 transitions. [2024-11-09 04:53:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 04:53:02,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:02,235 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:02,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (26)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:02,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 04:53:02,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:02,837 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:53:02,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:02,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1076217462, now seen corresponding path program 2 times [2024-11-09 04:53:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:02,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630451816] [2024-11-09 04:53:02,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:02,838 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 [2024-11-09 04:53:02,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:02,839 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:53:02,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (29)] Waiting until timeout for monitored process [2024-11-09 04:53:03,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:53:03,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:53:03,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:53:03,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:03,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:03,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:03,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630451816] [2024-11-09 04:53:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630451816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1427568362] [2024-11-09 04:53:03,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:03,714 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:03,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:03,717 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:03,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 04:53:05,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:53:05,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:53:05,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:53:05,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:05,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:05,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1427568362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354106671] [2024-11-09 04:53:05,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:05,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:05,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:05,531 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:05,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 04:53:28,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:53:28,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:53:28,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:53:28,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:28,826 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 [2024-11-09 04:53:28,988 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 04:53:28,988 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 [2024-11-09 04:53:29,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:53:29,372 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 04:53:29,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-09 04:53:29,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-09 04:53:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:53:29,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:29,681 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-09 04:53:29,682 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 25 treesize of output 24 [2024-11-09 04:53:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354106671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:53:29,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 04:53:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2024-11-09 04:53:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523339168] [2024-11-09 04:53:29,813 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 04:53:29,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 04:53:29,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:29,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 04:53:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-09 04:53:29,817 INFO L87 Difference]: Start difference. First operand 921 states and 973 transitions. Second operand has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:53:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:41,372 INFO L93 Difference]: Finished difference Result 1306 states and 1390 transitions. [2024-11-09 04:53:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 04:53:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2024-11-09 04:53:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:41,375 INFO L225 Difference]: With dead ends: 1306 [2024-11-09 04:53:41,375 INFO L226 Difference]: Without dead ends: 1302 [2024-11-09 04:53:41,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=410, Invalid=2131, Unknown=9, NotChecked=0, Total=2550 [2024-11-09 04:53:41,377 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 728 mSDsluCounter, 4978 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 5136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:41,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 5427 Invalid, 5136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-09 04:53:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2024-11-09 04:53:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 929. [2024-11-09 04:53:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 610 states have (on average 1.5918032786885246) internal successors, (971), 919 states have internal predecessors, (971), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 04:53:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 984 transitions. [2024-11-09 04:53:41,396 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 984 transitions. Word has length 79 [2024-11-09 04:53:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:41,397 INFO L471 AbstractCegarLoop]: Abstraction has 929 states and 984 transitions. [2024-11-09 04:53:41,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.0) internal successors, (154), 22 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:53:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 984 transitions. [2024-11-09 04:53:41,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 04:53:41,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:41,398 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:41,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (29)] Ended with exit code 0 [2024-11-09 04:53:41,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-09 04:53:41,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:41,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:41,999 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:53:42,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 855272343, now seen corresponding path program 1 times [2024-11-09 04:53:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935271863] [2024-11-09 04:53:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:42,001 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 [2024-11-09 04:53:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:42,003 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:53:42,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (32)] Waiting until timeout for monitored process [2024-11-09 04:53:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:42,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:53:42,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:42,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:43,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935271863] [2024-11-09 04:53:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935271863] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:43,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145515143] [2024-11-09 04:53:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:43,214 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:43,216 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:43,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:53:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:43,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:53:43,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:43,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145515143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986600949] [2024-11-09 04:53:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:44,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:44,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:44,105 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:44,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 04:53:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:44,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:53:44,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:44,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986600949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:45,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:53:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2024-11-09 04:53:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990424337] [2024-11-09 04:53:45,394 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:53:45,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 04:53:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 04:53:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 04:53:45,397 INFO L87 Difference]: Start difference. First operand 929 states and 984 transitions. Second operand has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:53:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:47,661 INFO L93 Difference]: Finished difference Result 955 states and 1025 transitions. [2024-11-09 04:53:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 04:53:47,662 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 85 [2024-11-09 04:53:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:47,664 INFO L225 Difference]: With dead ends: 955 [2024-11-09 04:53:47,664 INFO L226 Difference]: Without dead ends: 949 [2024-11-09 04:53:47,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1168, Invalid=2254, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 04:53:47,666 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 24 mSDsluCounter, 15330 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 16141 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:47,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 16141 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:53:47,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-11-09 04:53:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 947. [2024-11-09 04:53:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 628 states have (on average 1.5828025477707006) internal successors, (994), 937 states have internal predecessors, (994), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 04:53:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1007 transitions. [2024-11-09 04:53:47,680 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1007 transitions. Word has length 85 [2024-11-09 04:53:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:47,680 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1007 transitions. [2024-11-09 04:53:47,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 38 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:53:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1007 transitions. [2024-11-09 04:53:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 04:53:47,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:47,682 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:47,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-09 04:53:47,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (32)] Ended with exit code 0 [2024-11-09 04:53:48,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 04:53:48,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:48,283 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:53:48,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1345105367, now seen corresponding path program 2 times [2024-11-09 04:53:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:48,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036558010] [2024-11-09 04:53:48,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:48,284 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 [2024-11-09 04:53:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:48,285 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:53:48,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (35)] Waiting until timeout for monitored process [2024-11-09 04:53:48,870 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:53:48,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:53:48,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:53:48,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:49,329 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:49,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:51,162 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036558010] [2024-11-09 04:53:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036558010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [560175884] [2024-11-09 04:53:51,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:51,164 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 04:53:53,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:53:53,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:53:53,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:53:53,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:53,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:53,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [560175884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:53,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958777078] [2024-11-09 04:53:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:53:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:53,611 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:53,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 04:54:26,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:54:26,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:26,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:54:26,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:27,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:54:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958777078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:30,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:54:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 74 [2024-11-09 04:54:30,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590708581] [2024-11-09 04:54:30,274 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:30,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-09 04:54:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-09 04:54:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1613, Invalid=3789, Unknown=0, NotChecked=0, Total=5402 [2024-11-09 04:54:30,278 INFO L87 Difference]: Start difference. First operand 947 states and 1007 transitions. Second operand has 74 states, 74 states have (on average 1.972972972972973) internal successors, (146), 74 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:54:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:41,057 INFO L93 Difference]: Finished difference Result 991 states and 1084 transitions. [2024-11-09 04:54:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-09 04:54:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.972972972972973) internal successors, (146), 74 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 97 [2024-11-09 04:54:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:41,059 INFO L225 Difference]: With dead ends: 991 [2024-11-09 04:54:41,059 INFO L226 Difference]: Without dead ends: 985 [2024-11-09 04:54:41,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=4483, Invalid=9323, Unknown=0, NotChecked=0, Total=13806 [2024-11-09 04:54:41,061 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 48 mSDsluCounter, 21006 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 21817 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:41,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 21817 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 04:54:41,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-11-09 04:54:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 983. [2024-11-09 04:54:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 664 states have (on average 1.569277108433735) internal successors, (1042), 973 states have internal predecessors, (1042), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 04:54:41,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1055 transitions. [2024-11-09 04:54:41,075 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1055 transitions. Word has length 97 [2024-11-09 04:54:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:41,075 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1055 transitions. [2024-11-09 04:54:41,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.972972972972973) internal successors, (146), 74 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:54:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1055 transitions. [2024-11-09 04:54:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:54:41,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:41,077 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:41,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-09 04:54:41,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (35)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:41,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:41,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:41,678 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-09 04:54:41,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash -819343881, now seen corresponding path program 3 times [2024-11-09 04:54:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:41,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991502938] [2024-11-09 04:54:41,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:41,679 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 [2024-11-09 04:54:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:41,680 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 04:54:41,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/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 (38)] Waiting until timeout for monitored process [2024-11-09 04:54:44,422 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 04:54:44,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:54:44,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-09 04:54:44,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:44,462 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 [2024-11-09 04:54:44,812 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 [2024-11-09 04:54:44,834 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 04:54:44,834 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 [2024-11-09 04:54:44,867 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 11 treesize of output 7 [2024-11-09 04:54:44,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:54:45,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-09 04:54:45,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-09 04:54:45,973 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:54:45,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-09 04:54:45,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 11 [2024-11-09 04:54:46,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 04:54:46,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-09 04:54:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 04:54:46,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:47,630 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3587) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3586 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3587) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3586) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 04:54:47,637 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991502938] [2024-11-09 04:54:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991502938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:54:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1077542508] [2024-11-09 04:54:47,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:54:47,638 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:47,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:54:47,639 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:54:47,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-09 05:00:27,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 05:00:27,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:27,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-09 05:00:27,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:27,673 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 [2024-11-09 05:00:27,859 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 [2024-11-09 05:00:27,874 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 05:00:27,874 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 [2024-11-09 05:00:27,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:00:27,934 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 13 treesize of output 9 [2024-11-09 05:00:28,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 05:00:28,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-09 05:00:28,969 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 05:00:28,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 05:00:28,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 13 [2024-11-09 05:00:29,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-09 05:00:29,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-09 05:00:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 05:00:29,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:00:30,572 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4141 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4141) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4142) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4141 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4141) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2024-11-09 05:00:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1077542508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107000777] [2024-11-09 05:00:30,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:00:30,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:30,577 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:30,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c17ba45-7a65-4286-932e-9247deac4ee5/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process