./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E --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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:23,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:23,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 02:42:23,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:23,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:23,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:23,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:23,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:23,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:23,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:23,257 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:23,257 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:23,257 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:23,257 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:23,257 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:23,257 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:23,258 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:23,258 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:23,258 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:23,258 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:23,258 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:23,259 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:23,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:42:23,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:42:23,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:23,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:23,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:42:23,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:23,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:42:23,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:23,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:23,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:23,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:23,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:23,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:23,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:23,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:23,264 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-14 02:42:23,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:23,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:23,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:23,656 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:23,656 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:23,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i Unable to find full path for "g++" [2024-11-14 02:42:25,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:26,441 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:26,445 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-11-14 02:42:26,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/973223acb/40dbc952f4634837b43ce031e8169664/FLAG7d857f0b3 [2024-11-14 02:42:26,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/973223acb/40dbc952f4634837b43ce031e8169664 [2024-11-14 02:42:26,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:26,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:26,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:26,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:26,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:26,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:26" (1/1) ... [2024-11-14 02:42:26,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22984f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:26, skipping insertion in model container [2024-11-14 02:42:26,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:26" (1/1) ... [2024-11-14 02:42:26,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:27,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,223 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,233 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,239 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,257 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,301 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,304 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,308 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,318 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,335 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,337 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,341 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,342 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,344 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,348 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,357 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:27,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:27,382 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) [2024-11-14 02:42:27,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@236b6120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:27, skipping insertion in model container [2024-11-14 02:42:27,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:27,383 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 02:42:27,385 INFO L158 Benchmark]: Toolchain (without parser) took 852.25ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 71.7MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:42:27,386 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:42:27,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.36ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 71.7MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:42:27,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.36ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 71.7MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 754]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E --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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:30,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:30,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 02:42:30,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:30,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:30,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:30,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:30,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:30,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:30,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:30,884 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:30,884 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:30,884 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:30,885 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:30,885 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:30,885 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:30,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:42:30,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:42:30,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:30,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:30,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:30,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:30,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:30,887 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:42:30,887 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:42:30,887 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:42:30,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:30,890 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:42:30,890 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:30,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:30,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:30,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:30,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-14 02:42:31,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:31,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:31,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:31,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:31,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:31,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i Unable to find full path for "g++" [2024-11-14 02:42:33,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:34,341 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:34,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-2.i [2024-11-14 02:42:34,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/ca40f27cf/e38c968ba08d41e192fea5e6389df77d/FLAG5114bed12 [2024-11-14 02:42:34,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/data/ca40f27cf/e38c968ba08d41e192fea5e6389df77d [2024-11-14 02:42:34,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:34,402 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:34,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:34,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:34,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:34,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:34" (1/1) ... [2024-11-14 02:42:34,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcc32cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:34, skipping insertion in model container [2024-11-14 02:42:34,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:34" (1/1) ... [2024-11-14 02:42:34,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:35,174 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,214 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,223 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,235 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,248 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,295 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,299 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,303 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,312 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,331 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,332 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,336 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,338 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,340 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,341 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,348 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:35,375 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 02:42:35,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:35,453 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,506 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,512 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,518 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,531 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,568 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,570 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,574 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,579 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,598 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,600 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,602 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,605 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,610 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,610 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,615 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:35,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:35,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:35,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:35,798 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:35,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35 WrapperNode [2024-11-14 02:42:35,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:35,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:35,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:35,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:35,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:35,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:35,963 INFO L138 Inliner]: procedures = 179, calls = 377, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1272 [2024-11-14 02:42:35,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:35,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:35,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:35,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:35,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:35,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:36,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:36,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:36,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:36,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (1/1) ... [2024-11-14 02:42:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:36,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:36,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-14 02:42:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 02:42:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 02:42:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 02:42:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:42:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 02:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 02:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 02:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 02:42:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:42:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:36,645 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:36,648 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:36,651 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-14 02:42:44,696 INFO L? ?]: Removed 1534 outVars from TransFormulas that were not future-live. [2024-11-14 02:42:44,696 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:44,766 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:44,766 INFO L316 CfgBuilder]: Removed 69 assume(true) statements. [2024-11-14 02:42:44,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:44 BoogieIcfgContainer [2024-11-14 02:42:44,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:44,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:44,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:44,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:44,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:34" (1/3) ... [2024-11-14 02:42:44,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d575e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:44, skipping insertion in model container [2024-11-14 02:42:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:35" (2/3) ... [2024-11-14 02:42:44,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d575e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:44, skipping insertion in model container [2024-11-14 02:42:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:44" (3/3) ... [2024-11-14 02:42:44,793 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-2.i [2024-11-14 02:42:44,811 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:44,813 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test4-2.i that has 2 procedures, 1430 locations, 1 initial locations, 40 loop locations, and 733 error locations. [2024-11-14 02:42:44,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:44,906 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;@53389081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:44,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2024-11-14 02:42:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 1430 states, 695 states have (on average 2.2474820143884893) internal successors, (1562), 1422 states have internal predecessors, (1562), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 02:42:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:42:44,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:44,929 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:42:44,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr732ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:42:44,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1204723, now seen corresponding path program 1 times [2024-11-14 02:42:44,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:44,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957665185] [2024-11-14 02:42:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:44,956 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 [2024-11-14 02:42:44,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:44,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:42:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:42:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:45,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:42:45,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:45,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:45,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:42:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957665185] [2024-11-14 02:42:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957665185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:45,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076921737] [2024-11-14 02:42:45,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:45,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:45,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:42:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:45,331 INFO L87 Difference]: Start difference. First operand has 1430 states, 695 states have (on average 2.2474820143884893) internal successors, (1562), 1422 states have internal predecessors, (1562), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2024-11-14 02:42:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:48,878 INFO L93 Difference]: Finished difference Result 1620 states and 1699 transitions. [2024-11-14 02:42:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:48,881 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 [2024-11-14 02:42:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:48,904 INFO L225 Difference]: With dead ends: 1620 [2024-11-14 02:42:48,904 INFO L226 Difference]: Without dead ends: 1616 [2024-11-14 02:42:48,907 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 [2024-11-14 02:42:48,911 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 219 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:48,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2134 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 02:42:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-14 02:42:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1428. [2024-11-14 02:42:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 704 states have (on average 2.122159090909091) internal successors, (1494), 1420 states have internal predecessors, (1494), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 02:42:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1506 transitions. [2024-11-14 02:42:49,060 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1506 transitions. Word has length 4 [2024-11-14 02:42:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:49,060 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 1506 transitions. [2024-11-14 02:42:49,061 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) [2024-11-14 02:42:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1506 transitions. [2024-11-14 02:42:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 02:42:49,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:49,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 02:42:49,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:49,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:42:49,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:42:49,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825422, now seen corresponding path program 1 times [2024-11-14 02:42:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765362076] [2024-11-14 02:42:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:49,268 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 [2024-11-14 02:42:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:49,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:42:49,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:42:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:49,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:42:49,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:49,497 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 [2024-11-14 02:42:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:49,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:49,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:42:49,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765362076] [2024-11-14 02:42:49,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765362076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:49,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:49,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:49,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412767436] [2024-11-14 02:42:49,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:49,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:49,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:42:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:49,553 INFO L87 Difference]: Start difference. First operand 1428 states and 1506 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:53,211 INFO L93 Difference]: Finished difference Result 1334 states and 1410 transitions. [2024-11-14 02:42:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:53,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 02:42:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:53,219 INFO L225 Difference]: With dead ends: 1334 [2024-11-14 02:42:53,219 INFO L226 Difference]: Without dead ends: 1334 [2024-11-14 02:42:53,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:53,221 INFO L432 NwaCegarLoop]: 769 mSDtfsCounter, 1029 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:53,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 879 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-14 02:42:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2024-11-14 02:42:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1334. [2024-11-14 02:42:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 704 states have (on average 1.9857954545454546) internal successors, (1398), 1326 states have internal predecessors, (1398), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 02:42:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1410 transitions. [2024-11-14 02:42:53,263 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1410 transitions. Word has length 6 [2024-11-14 02:42:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:53,264 INFO L471 AbstractCegarLoop]: Abstraction has 1334 states and 1410 transitions. [2024-11-14 02:42:53,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1410 transitions. [2024-11-14 02:42:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 02:42:53,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:53,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 02:42:53,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:42:53,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:42:53,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:42:53,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825423, now seen corresponding path program 1 times [2024-11-14 02:42:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771371936] [2024-11-14 02:42:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:53,467 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 [2024-11-14 02:42:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:53,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:42:53,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:42:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:53,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:42:53,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:53,667 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 [2024-11-14 02:42:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:53,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:53,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:42:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771371936] [2024-11-14 02:42:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771371936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:53,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:53,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:53,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536987762] [2024-11-14 02:42:53,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:53,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:53,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:42:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:53,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:53,710 INFO L87 Difference]: Start difference. First operand 1334 states and 1410 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:58,635 INFO L93 Difference]: Finished difference Result 1654 states and 1750 transitions. [2024-11-14 02:42:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:58,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 02:42:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:58,642 INFO L225 Difference]: With dead ends: 1654 [2024-11-14 02:42:58,642 INFO L226 Difference]: Without dead ends: 1654 [2024-11-14 02:42:58,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:58,644 INFO L432 NwaCegarLoop]: 1135 mSDtfsCounter, 522 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:58,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1683 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-14 02:42:58,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2024-11-14 02:42:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1501. [2024-11-14 02:42:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 881 states have (on average 1.9500567536889897) internal successors, (1718), 1493 states have internal predecessors, (1718), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 02:42:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1730 transitions. [2024-11-14 02:42:58,688 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1730 transitions. Word has length 6 [2024-11-14 02:42:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:58,689 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 1730 transitions. [2024-11-14 02:42:58,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1730 transitions. [2024-11-14 02:42:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 02:42:58,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:58,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:58,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:58,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:42:58,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:42:58,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1472485377, now seen corresponding path program 1 times [2024-11-14 02:42:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:42:58,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368475011] [2024-11-14 02:42:58,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:58,891 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 [2024-11-14 02:42:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:42:58,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:42:58,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:42:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:59,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:42:59,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:59,147 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:59,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:42:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368475011] [2024-11-14 02:42:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368475011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:59,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:42:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460101997] [2024-11-14 02:42:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:59,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:59,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:42:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:59,149 INFO L87 Difference]: Start difference. First operand 1501 states and 1730 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:00,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:00,458 INFO L93 Difference]: Finished difference Result 2270 states and 2625 transitions. [2024-11-14 02:43:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:00,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 02:43:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:00,468 INFO L225 Difference]: With dead ends: 2270 [2024-11-14 02:43:00,468 INFO L226 Difference]: Without dead ends: 2270 [2024-11-14 02:43:00,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:00,470 INFO L432 NwaCegarLoop]: 1367 mSDtfsCounter, 691 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:00,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 3855 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 02:43:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-14 02:43:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1971. [2024-11-14 02:43:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1351 states have (on average 1.9296817172464842) internal successors, (2607), 1960 states have internal predecessors, (2607), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2625 transitions. [2024-11-14 02:43:00,543 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2625 transitions. Word has length 7 [2024-11-14 02:43:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:00,544 INFO L471 AbstractCegarLoop]: Abstraction has 1971 states and 2625 transitions. [2024-11-14 02:43:00,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2625 transitions. [2024-11-14 02:43:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-14 02:43:00,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:00,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:00,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:00,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:00,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:00,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2014240042, now seen corresponding path program 1 times [2024-11-14 02:43:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074324765] [2024-11-14 02:43:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:00,749 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 [2024-11-14 02:43:00,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:00,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:00,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:00,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:43:00,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:00,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:00,985 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074324765] [2024-11-14 02:43:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074324765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:00,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:43:00,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186846123] [2024-11-14 02:43:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:00,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:00,987 INFO L87 Difference]: Start difference. First operand 1971 states and 2625 transitions. Second operand has 3 states, 3 states have (on average 3.0) 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) [2024-11-14 02:43:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:01,326 INFO L93 Difference]: Finished difference Result 2047 states and 2565 transitions. [2024-11-14 02:43:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:01,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2024-11-14 02:43:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:01,335 INFO L225 Difference]: With dead ends: 2047 [2024-11-14 02:43:01,335 INFO L226 Difference]: Without dead ends: 2047 [2024-11-14 02:43:01,335 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 [2024-11-14 02:43:01,336 INFO L432 NwaCegarLoop]: 1439 mSDtfsCounter, 315 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:01,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2742 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2024-11-14 02:43:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1831. [2024-11-14 02:43:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1211 states have (on average 1.9388934764657308) internal successors, (2348), 1820 states have internal predecessors, (2348), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2366 transitions. [2024-11-14 02:43:01,384 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2366 transitions. Word has length 9 [2024-11-14 02:43:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:01,385 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 2366 transitions. [2024-11-14 02:43:01,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2024-11-14 02:43:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2366 transitions. [2024-11-14 02:43:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:43:01,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:01,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:01,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:01,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:01,588 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr629REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:01,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1244508194, now seen corresponding path program 1 times [2024-11-14 02:43:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761927264] [2024-11-14 02:43:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:01,589 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 [2024-11-14 02:43:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:01,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:01,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:01,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:43:01,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:01,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:01,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:01,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761927264] [2024-11-14 02:43:01,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761927264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:01,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:01,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331453324] [2024-11-14 02:43:01,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:01,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:01,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:01,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:01,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:01,844 INFO L87 Difference]: Start difference. First operand 1831 states and 2366 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-14 02:43:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:03,244 INFO L93 Difference]: Finished difference Result 2047 states and 2564 transitions. [2024-11-14 02:43:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-14 02:43:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:03,251 INFO L225 Difference]: With dead ends: 2047 [2024-11-14 02:43:03,252 INFO L226 Difference]: Without dead ends: 2041 [2024-11-14 02:43:03,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:03,254 INFO L432 NwaCegarLoop]: 1439 mSDtfsCounter, 317 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:03,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 3963 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 02:43:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2024-11-14 02:43:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1825. [2024-11-14 02:43:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1205 states have (on average 1.9427385892116182) internal successors, (2341), 1814 states have internal predecessors, (2341), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2359 transitions. [2024-11-14 02:43:03,296 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2359 transitions. Word has length 12 [2024-11-14 02:43:03,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:03,297 INFO L471 AbstractCegarLoop]: Abstraction has 1825 states and 2359 transitions. [2024-11-14 02:43:03,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-14 02:43:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2359 transitions. [2024-11-14 02:43:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:43:03,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:03,298 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:03,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:03,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:03,500 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:03,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash 759654968, now seen corresponding path program 1 times [2024-11-14 02:43:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:03,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309424168] [2024-11-14 02:43:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:03,502 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 [2024-11-14 02:43:03,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:03,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:03,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:03,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:43:03,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:03,705 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:03,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309424168] [2024-11-14 02:43:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309424168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:03,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:03,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:43:03,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34634582] [2024-11-14 02:43:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:03,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:03,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:03,707 INFO L87 Difference]: Start difference. First operand 1825 states and 2359 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-14 02:43:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:03,774 INFO L93 Difference]: Finished difference Result 1765 states and 2273 transitions. [2024-11-14 02:43:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:03,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2024-11-14 02:43:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:03,783 INFO L225 Difference]: With dead ends: 1765 [2024-11-14 02:43:03,784 INFO L226 Difference]: Without dead ends: 1765 [2024-11-14 02:43:03,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:03,785 INFO L432 NwaCegarLoop]: 1315 mSDtfsCounter, 71 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2567 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 [2024-11-14 02:43:03,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 02:43:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2024-11-14 02:43:03,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1765. [2024-11-14 02:43:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1765 states, 1169 states have (on average 1.9289991445680068) internal successors, (2255), 1754 states have internal predecessors, (2255), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2273 transitions. [2024-11-14 02:43:03,833 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2273 transitions. Word has length 12 [2024-11-14 02:43:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:03,834 INFO L471 AbstractCegarLoop]: Abstraction has 1765 states and 2273 transitions. [2024-11-14 02:43:03,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-14 02:43:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2273 transitions. [2024-11-14 02:43:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 02:43:03,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:03,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:03,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:04,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:04,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:04,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -116021103, now seen corresponding path program 1 times [2024-11-14 02:43:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061815945] [2024-11-14 02:43:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:04,036 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 [2024-11-14 02:43:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:04,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:04,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:04,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:43:04,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:04,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:04,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061815945] [2024-11-14 02:43:04,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061815945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:04,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:04,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:04,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967764086] [2024-11-14 02:43:04,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:04,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:04,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:04,271 INFO L87 Difference]: Start difference. First operand 1765 states and 2273 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-14 02:43:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:04,443 INFO L93 Difference]: Finished difference Result 1735 states and 2215 transitions. [2024-11-14 02:43:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:43:04,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-11-14 02:43:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:04,451 INFO L225 Difference]: With dead ends: 1735 [2024-11-14 02:43:04,451 INFO L226 Difference]: Without dead ends: 1735 [2024-11-14 02:43:04,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:04,452 INFO L432 NwaCegarLoop]: 1270 mSDtfsCounter, 48 mSDsluCounter, 2514 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3784 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 [2024-11-14 02:43:04,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3784 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-11-14 02:43:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1735. [2024-11-14 02:43:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1153 states have (on average 1.9054640069384214) internal successors, (2197), 1724 states have internal predecessors, (2197), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2215 transitions. [2024-11-14 02:43:04,495 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2215 transitions. Word has length 14 [2024-11-14 02:43:04,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:04,496 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2215 transitions. [2024-11-14 02:43:04,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-14 02:43:04,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2215 transitions. [2024-11-14 02:43:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 02:43:04,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:04,498 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] [2024-11-14 02:43:04,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:04,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:04,699 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:04,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -81118465, now seen corresponding path program 1 times [2024-11-14 02:43:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590814113] [2024-11-14 02:43:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:04,701 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 [2024-11-14 02:43:04,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:04,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:04,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:04,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:43:04,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:04,947 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 7 [2024-11-14 02:43:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:05,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:05,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:05,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590814113] [2024-11-14 02:43:05,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590814113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:05,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:05,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:43:05,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788170531] [2024-11-14 02:43:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:05,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:05,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:05,073 INFO L87 Difference]: Start difference. First operand 1735 states and 2215 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-14 02:43:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:09,675 INFO L93 Difference]: Finished difference Result 1739 states and 2215 transitions. [2024-11-14 02:43:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-14 02:43:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:09,691 INFO L225 Difference]: With dead ends: 1739 [2024-11-14 02:43:09,691 INFO L226 Difference]: Without dead ends: 1739 [2024-11-14 02:43:09,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:09,692 INFO L432 NwaCegarLoop]: 723 mSDtfsCounter, 966 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:09,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1399 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-14 02:43:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2024-11-14 02:43:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1731. [2024-11-14 02:43:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1153 states have (on average 1.8985255854293148) internal successors, (2189), 1720 states have internal predecessors, (2189), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2207 transitions. [2024-11-14 02:43:09,733 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2207 transitions. Word has length 28 [2024-11-14 02:43:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:09,733 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2207 transitions. [2024-11-14 02:43:09,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-14 02:43:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2207 transitions. [2024-11-14 02:43:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 02:43:09,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:09,735 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] [2024-11-14 02:43:09,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:09,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:09,937 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:09,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -81118464, now seen corresponding path program 1 times [2024-11-14 02:43:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19549407] [2024-11-14 02:43:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:09,939 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 [2024-11-14 02:43:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:09,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:10,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:43:10,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:10,195 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 [2024-11-14 02:43:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:10,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:10,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19549407] [2024-11-14 02:43:10,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19549407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:10,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:43:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383746523] [2024-11-14 02:43:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:10,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:10,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:10,517 INFO L87 Difference]: Start difference. First operand 1731 states and 2207 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-14 02:43:16,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:16,990 INFO L93 Difference]: Finished difference Result 1888 states and 2227 transitions. [2024-11-14 02:43:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:16,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-14 02:43:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:16,994 INFO L225 Difference]: With dead ends: 1888 [2024-11-14 02:43:16,994 INFO L226 Difference]: Without dead ends: 1888 [2024-11-14 02:43:16,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:16,995 INFO L432 NwaCegarLoop]: 1399 mSDtfsCounter, 455 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:16,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 2715 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-14 02:43:16,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2024-11-14 02:43:17,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1727. [2024-11-14 02:43:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1153 states have (on average 1.8915871639202082) internal successors, (2181), 1716 states have internal predecessors, (2181), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2199 transitions. [2024-11-14 02:43:17,026 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2199 transitions. Word has length 28 [2024-11-14 02:43:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:17,027 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2199 transitions. [2024-11-14 02:43:17,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-11-14 02:43:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2199 transitions. [2024-11-14 02:43:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 02:43:17,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:17,028 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] [2024-11-14 02:43:17,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:17,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:17,233 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:17,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1414083712, now seen corresponding path program 1 times [2024-11-14 02:43:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189172834] [2024-11-14 02:43:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:17,234 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 [2024-11-14 02:43:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:17,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:17,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:17,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:43:17,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:17,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:17,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189172834] [2024-11-14 02:43:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189172834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:17,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:17,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836595948] [2024-11-14 02:43:17,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:17,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:17,631 INFO L87 Difference]: Start difference. First operand 1727 states and 2199 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-14 02:43:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:17,745 INFO L93 Difference]: Finished difference Result 1715 states and 2179 transitions. [2024-11-14 02:43:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:43:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2024-11-14 02:43:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:17,755 INFO L225 Difference]: With dead ends: 1715 [2024-11-14 02:43:17,756 INFO L226 Difference]: Without dead ends: 1715 [2024-11-14 02:43:17,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:17,756 INFO L432 NwaCegarLoop]: 1264 mSDtfsCounter, 21 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3761 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 [2024-11-14 02:43:17,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3761 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2024-11-14 02:43:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1715. [2024-11-14 02:43:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1141 states have (on average 1.8939526730937775) internal successors, (2161), 1704 states have internal predecessors, (2161), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2179 transitions. [2024-11-14 02:43:17,795 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2179 transitions. Word has length 47 [2024-11-14 02:43:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:17,796 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2179 transitions. [2024-11-14 02:43:17,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-11-14 02:43:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2179 transitions. [2024-11-14 02:43:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 02:43:17,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:17,800 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] [2024-11-14 02:43:17,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:18,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:18,001 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:18,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2076490828, now seen corresponding path program 1 times [2024-11-14 02:43:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536532082] [2024-11-14 02:43:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:18,003 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 [2024-11-14 02:43:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:18,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:18,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:18,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:43:18,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:18,581 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 [2024-11-14 02:43:18,596 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 [2024-11-14 02:43:19,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:19,551 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 [2024-11-14 02:43:19,583 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:43:19,583 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 [2024-11-14 02:43:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:19,617 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:19,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:19,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536532082] [2024-11-14 02:43:19,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536532082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:19,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:19,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:43:19,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110094010] [2024-11-14 02:43:19,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:19,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:19,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:19,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:19,621 INFO L87 Difference]: Start difference. First operand 1715 states and 2179 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-14 02:43:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:23,664 INFO L93 Difference]: Finished difference Result 1631 states and 2054 transitions. [2024-11-14 02:43:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-14 02:43:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:23,671 INFO L225 Difference]: With dead ends: 1631 [2024-11-14 02:43:23,671 INFO L226 Difference]: Without dead ends: 1631 [2024-11-14 02:43:23,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:23,672 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 882 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:23,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 723 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-14 02:43:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-11-14 02:43:23,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1454. [2024-11-14 02:43:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 964 states have (on average 1.7697095435684647) internal successors, (1706), 1443 states have internal predecessors, (1706), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1724 transitions. [2024-11-14 02:43:23,700 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1724 transitions. Word has length 55 [2024-11-14 02:43:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:23,700 INFO L471 AbstractCegarLoop]: Abstraction has 1454 states and 1724 transitions. [2024-11-14 02:43:23,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-14 02:43:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1724 transitions. [2024-11-14 02:43:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 02:43:23,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:23,702 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] [2024-11-14 02:43:23,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:23,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:23,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:23,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2102122742, now seen corresponding path program 1 times [2024-11-14 02:43:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:23,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39666973] [2024-11-14 02:43:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:23,908 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 [2024-11-14 02:43:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:23,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:23,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:24,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:43:24,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:24,329 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 [2024-11-14 02:43:24,352 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 [2024-11-14 02:43:24,403 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 [2024-11-14 02:43:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:24,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:24,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:24,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39666973] [2024-11-14 02:43:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39666973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:24,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596264167] [2024-11-14 02:43:24,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:24,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:43:24,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:43:24,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:24,428 INFO L87 Difference]: Start difference. First operand 1454 states and 1724 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-14 02:43:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:29,480 INFO L93 Difference]: Finished difference Result 1453 states and 1722 transitions. [2024-11-14 02:43:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:43:29,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-14 02:43:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:29,486 INFO L225 Difference]: With dead ends: 1453 [2024-11-14 02:43:29,487 INFO L226 Difference]: Without dead ends: 1453 [2024-11-14 02:43:29,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:29,488 INFO L432 NwaCegarLoop]: 1191 mSDtfsCounter, 2 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:29,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2990 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-14 02:43:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-11-14 02:43:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1453. [2024-11-14 02:43:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 964 states have (on average 1.7676348547717842) internal successors, (1704), 1442 states have internal predecessors, (1704), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1722 transitions. [2024-11-14 02:43:29,513 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1722 transitions. Word has length 60 [2024-11-14 02:43:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:29,513 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 1722 transitions. [2024-11-14 02:43:29,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-14 02:43:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1722 transitions. [2024-11-14 02:43:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 02:43:29,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:29,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:29,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:29,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:29,716 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:29,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2102122743, now seen corresponding path program 1 times [2024-11-14 02:43:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111280440] [2024-11-14 02:43:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:29,718 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 [2024-11-14 02:43:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:29,723 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:29,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:30,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 02:43:30,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:30,092 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 [2024-11-14 02:43:30,138 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 [2024-11-14 02:43:30,154 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 [2024-11-14 02:43:30,258 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 [2024-11-14 02:43:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:30,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:30,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111280440] [2024-11-14 02:43:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111280440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108586259] [2024-11-14 02:43:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:30,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:43:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:43:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:30,294 INFO L87 Difference]: Start difference. First operand 1453 states and 1722 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-14 02:43:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:36,634 INFO L93 Difference]: Finished difference Result 1452 states and 1720 transitions. [2024-11-14 02:43:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:43:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-14 02:43:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:36,640 INFO L225 Difference]: With dead ends: 1452 [2024-11-14 02:43:36,640 INFO L226 Difference]: Without dead ends: 1452 [2024-11-14 02:43:36,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:36,641 INFO L432 NwaCegarLoop]: 1191 mSDtfsCounter, 1 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:36,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3021 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-14 02:43:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2024-11-14 02:43:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1452. [2024-11-14 02:43:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 962 states have (on average 1.7692307692307692) internal successors, (1702), 1441 states have internal predecessors, (1702), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 02:43:36,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1720 transitions. [2024-11-14 02:43:36,669 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1720 transitions. Word has length 60 [2024-11-14 02:43:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:36,669 INFO L471 AbstractCegarLoop]: Abstraction has 1452 states and 1720 transitions. [2024-11-14 02:43:36,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-14 02:43:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1720 transitions. [2024-11-14 02:43:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 02:43:36,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:36,670 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] [2024-11-14 02:43:36,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:36,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:36,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:36,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 660045565, now seen corresponding path program 1 times [2024-11-14 02:43:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347751144] [2024-11-14 02:43:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:36,873 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 [2024-11-14 02:43:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:36,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:36,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:37,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:43:37,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:37,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:37,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347751144] [2024-11-14 02:43:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347751144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:37,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:37,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:43:37,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492300262] [2024-11-14 02:43:37,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:37,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:37,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:37,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:37,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:37,308 INFO L87 Difference]: Start difference. First operand 1452 states and 1720 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-14 02:43:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:37,399 INFO L93 Difference]: Finished difference Result 1455 states and 1726 transitions. [2024-11-14 02:43:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:37,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2024-11-14 02:43:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:37,408 INFO L225 Difference]: With dead ends: 1455 [2024-11-14 02:43:37,408 INFO L226 Difference]: Without dead ends: 1455 [2024-11-14 02:43:37,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:37,409 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 0 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:37,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3562 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:43:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2024-11-14 02:43:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1455. [2024-11-14 02:43:37,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 964 states have (on average 1.7686721991701244) internal successors, (1705), 1444 states have internal predecessors, (1705), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 02:43:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1726 transitions. [2024-11-14 02:43:37,440 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1726 transitions. Word has length 68 [2024-11-14 02:43:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:37,441 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 1726 transitions. [2024-11-14 02:43:37,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-14 02:43:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1726 transitions. [2024-11-14 02:43:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 02:43:37,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:37,442 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] [2024-11-14 02:43:37,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:37,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:37,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:37,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash -384388954, now seen corresponding path program 1 times [2024-11-14 02:43:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616741773] [2024-11-14 02:43:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:37,644 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 [2024-11-14 02:43:37,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:37,647 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:37,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:38,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:43:38,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:38,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:38,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616741773] [2024-11-14 02:43:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616741773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1435916978] [2024-11-14 02:43:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:38,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:38,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:43:38,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:43:38,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-14 02:43:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:39,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:43:39,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:39,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1435916978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544743483] [2024-11-14 02:43:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:39,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:39,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:39,100 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:39,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 02:43:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:39,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 02:43:39,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:39,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544743483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:39,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:43:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-14 02:43:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354418474] [2024-11-14 02:43:39,586 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:43:39,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:43:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:39,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:43:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:43:39,588 INFO L87 Difference]: Start difference. First operand 1455 states and 1726 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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) [2024-11-14 02:43:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:39,921 INFO L93 Difference]: Finished difference Result 1467 states and 1745 transitions. [2024-11-14 02:43:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:43:39,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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 69 [2024-11-14 02:43:39,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:39,928 INFO L225 Difference]: With dead ends: 1467 [2024-11-14 02:43:39,928 INFO L226 Difference]: Without dead ends: 1467 [2024-11-14 02:43:39,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:43:39,929 INFO L432 NwaCegarLoop]: 1189 mSDtfsCounter, 5 mSDsluCounter, 4735 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5924 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:39,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5924 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:39,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2024-11-14 02:43:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1465. [2024-11-14 02:43:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 973 states have (on average 1.7677286742034943) internal successors, (1720), 1453 states have internal predecessors, (1720), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 02:43:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1741 transitions. [2024-11-14 02:43:39,994 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1741 transitions. Word has length 69 [2024-11-14 02:43:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:39,995 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 1741 transitions. [2024-11-14 02:43:39,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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) [2024-11-14 02:43:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1741 transitions. [2024-11-14 02:43:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 02:43:39,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:39,996 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] [2024-11-14 02:43:40,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:40,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:40,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 02:43:40,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:40,597 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:43:40,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash 912990525, now seen corresponding path program 2 times [2024-11-14 02:43:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:40,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627678498] [2024-11-14 02:43:40,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:43:40,599 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 [2024-11-14 02:43:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:40,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:43:40,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:43:41,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:43:41,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:43:41,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:43:41,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:41,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:41,771 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627678498] [2024-11-14 02:43:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627678498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [612689659] [2024-11-14 02:43:41,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:43:41,772 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:43:41,775 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:43:41,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-14 02:43:43,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:43:43,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:43:43,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:43:43,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:43,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [612689659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045511475] [2024-11-14 02:43:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:43:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:43,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:43,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 02:43:58,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:43:58,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:43:58,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:43:58,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:58,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045511475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:58,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:43:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 02:43:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040350740] [2024-11-14 02:43:58,592 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:43:58,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 02:43:58,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 02:43:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-14 02:43:58,595 INFO L87 Difference]: Start difference. First operand 1465 states and 1741 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2024-11-14 02:43:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:59,574 INFO L93 Difference]: Finished difference Result 1480 states and 1762 transitions. [2024-11-14 02:43:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 02:43:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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 72 [2024-11-14 02:43:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:59,585 INFO L225 Difference]: With dead ends: 1480 [2024-11-14 02:43:59,585 INFO L226 Difference]: Without dead ends: 1474 [2024-11-14 02:43:59,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2024-11-14 02:43:59,588 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 9 mSDsluCounter, 5931 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7121 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:59,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7121 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:43:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-11-14 02:43:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2024-11-14 02:43:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 982 states have (on average 1.7627291242362526) internal successors, (1731), 1462 states have internal predecessors, (1731), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 02:43:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1752 transitions. [2024-11-14 02:43:59,633 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1752 transitions. Word has length 72 [2024-11-14 02:43:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:59,633 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 1752 transitions. [2024-11-14 02:43:59,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 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) [2024-11-14 02:43:59,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1752 transitions. [2024-11-14 02:43:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 02:43:59,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:59,634 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] [2024-11-14 02:43:59,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-14 02:43:59,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:00,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:44:00,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:00,235 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-14 02:44:00,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash 399685789, now seen corresponding path program 3 times [2024-11-14 02:44:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:00,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262238918] [2024-11-14 02:44:00,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:00,236 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 [2024-11-14 02:44:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:00,238 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 02:44:00,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 02:44:01,085 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 02:44:01,085 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:01,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:44:01,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:01,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:02,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262238918] [2024-11-14 02:44:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262238918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:02,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479995892] [2024-11-14 02:44:02,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:02,291 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:44:02,293 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:44:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-14 02:44:06,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 02:44:06,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:06,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:44:06,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:06,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [479995892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836764584] [2024-11-14 02:44:06,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:06,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:06,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:06,997 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6e3197e-7c40-4a62-8696-91cd2091cd72/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process