./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire --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 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:33:58,857 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:33:58,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 20:33:58,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:33:58,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:33:59,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:33:59,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:33:59,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:33:59,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:33:59,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:33:59,036 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:33:59,037 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:33:59,038 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:33:59,039 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:33:59,040 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:33:59,040 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:33:59,041 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:33:59,041 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:33:59,042 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:33:59,042 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:33:59,043 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:33:59,043 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:33:59,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:33:59,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:33:59,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:33:59,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:33:59,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:33:59,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:33:59,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:33:59,047 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:33:59,049 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:33:59,049 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:33:59,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:33:59,050 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:33:59,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:33:59,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:33:59,050 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:33:59,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:33:59,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:33:59,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:33:59,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:33:59,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:33:59,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:33:59,052 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:33:59,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:33:59,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:33:59,054 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:33:59,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:33:59,054 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 [2023-11-23 20:33:59,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:33:59,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:33:59,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:33:59,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:33:59,432 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:33:59,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-23 20:34:02,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:03,086 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:03,087 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-23 20:34:03,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/2ff9f2631/f943b9a70b364db7b2dd19b7a711f711/FLAG951edb8c9 [2023-11-23 20:34:03,134 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/2ff9f2631/f943b9a70b364db7b2dd19b7a711f711 [2023-11-23 20:34:03,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:03,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:03,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:03,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:03,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:03,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:03" (1/1) ... [2023-11-23 20:34:03,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467cbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:03, skipping insertion in model container [2023-11-23 20:34:03,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:03" (1/1) ... [2023-11-23 20:34:03,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:03,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:03,883 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 20:34:03,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@441ad0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:03, skipping insertion in model container [2023-11-23 20:34:03,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:03,886 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 20:34:03,889 INFO L158 Benchmark]: Toolchain (without parser) took 748.76ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 74.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:34:03,889 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:03,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 745.99ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 74.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 20:34:03,892 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 745.99ms. Allocated memory is still 144.7MB. Free memory was 95.1MB in the beginning and 74.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire --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 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:06,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:06,550 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 20:34:06,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:06,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:06,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:06,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:06,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:06,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:06,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:06,609 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:06,609 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:06,610 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:06,611 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:06,612 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:06,612 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:06,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:34:06,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:34:06,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:06,615 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:34:06,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:06,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:34:06,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:06,617 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:34:06,617 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:34:06,618 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:34:06,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:06,619 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:34:06,619 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:34:06,619 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:34:06,621 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:34:06,621 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:34:06,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:06,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:06,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:34:06,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:06,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:06,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:06,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:06,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:06,624 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:34:06,625 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:34:06,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:06,625 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:06,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:06,626 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2872c384167f2e3876e0fc6c6cdca366b47c7b8757c341fcf44d3890af023ea5 [2023-11-23 20:34:07,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:07,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:07,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:07,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:07,070 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:07,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-23 20:34:10,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:10,603 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:10,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2023-11-23 20:34:10,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/e25dfa89c/cae83aade46d4ac596b725bb50d0dc0e/FLAG97072498b [2023-11-23 20:34:10,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/data/e25dfa89c/cae83aade46d4ac596b725bb50d0dc0e [2023-11-23 20:34:10,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:10,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:10,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:10,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:10,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:10,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:10" (1/1) ... [2023-11-23 20:34:10,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73372262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:10, skipping insertion in model container [2023-11-23 20:34:10,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:10" (1/1) ... [2023-11-23 20:34:10,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:11,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:11,395 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 20:34:11,424 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:11,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:11,534 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:11,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:11,676 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:11,676 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:34:11,684 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:11,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11 WrapperNode [2023-11-23 20:34:11,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:11,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:11,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:11,685 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:11,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,759 INFO L138 Inliner]: procedures = 252, calls = 64, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 160 [2023-11-23 20:34:11,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:11,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:11,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:11,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:11,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:11,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:11,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:11,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:11,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (1/1) ... [2023-11-23 20:34:11,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:11,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:11,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:34:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-23 20:34:11,924 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-23 20:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:34:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 20:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 20:34:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 20:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:34:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:11,928 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:34:12,246 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:12,248 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:13,048 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:13,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:13,358 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:34:13,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:13 BoogieIcfgContainer [2023-11-23 20:34:13,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:13,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:13,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:13,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:13,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:10" (1/3) ... [2023-11-23 20:34:13,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caca9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:13, skipping insertion in model container [2023-11-23 20:34:13,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:11" (2/3) ... [2023-11-23 20:34:13,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caca9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:13, skipping insertion in model container [2023-11-23 20:34:13,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:13" (3/3) ... [2023-11-23 20:34:13,372 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-11-23 20:34:13,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:13,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-11-23 20:34:13,395 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:34:13,504 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 20:34:13,551 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 136 transitions, 286 flow [2023-11-23 20:34:14,087 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11512 states, 10208 states have (on average 3.2685148902821317) internal successors, (33365), 11511 states have internal predecessors, (33365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:14,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:14,122 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34759dc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:14,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-23 20:34:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 11512 states, 10208 states have (on average 3.2685148902821317) internal successors, (33365), 11511 states have internal predecessors, (33365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:34:14,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:14,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:34:14,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 586168, now seen corresponding path program 1 times [2023-11-23 20:34:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186392867] [2023-11-23 20:34:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:14,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:14,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:14,262 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:34:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:14,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:34:14,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:14,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:14,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:14,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186392867] [2023-11-23 20:34:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186392867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:14,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216263687] [2023-11-23 20:34:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:14,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:14,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:14,628 INFO L87 Difference]: Start difference. First operand has 11512 states, 10208 states have (on average 3.2685148902821317) internal successors, (33365), 11511 states have internal predecessors, (33365), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:15,518 INFO L93 Difference]: Finished difference Result 11056 states and 31161 transitions. [2023-11-23 20:34:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:15,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:34:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:15,696 INFO L225 Difference]: With dead ends: 11056 [2023-11-23 20:34:15,696 INFO L226 Difference]: Without dead ends: 11046 [2023-11-23 20:34:15,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:15,702 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:15,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 71 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:34:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2023-11-23 20:34:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 11046. [2023-11-23 20:34:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11046 states, 9746 states have (on average 3.1944387441001436) internal successors, (31133), 11045 states have internal predecessors, (31133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11046 states to 11046 states and 31133 transitions. [2023-11-23 20:34:16,540 INFO L78 Accepts]: Start accepts. Automaton has 11046 states and 31133 transitions. Word has length 3 [2023-11-23 20:34:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:16,541 INFO L495 AbstractCegarLoop]: Abstraction has 11046 states and 31133 transitions. [2023-11-23 20:34:16,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 11046 states and 31133 transitions. [2023-11-23 20:34:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:34:16,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:16,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 20:34:16,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 20:34:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:16,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:16,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:16,748 INFO L85 PathProgramCache]: Analyzing trace with hash 586169, now seen corresponding path program 1 times [2023-11-23 20:34:16,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239437951] [2023-11-23 20:34:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:16,749 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 [2023-11-23 20:34:16,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:16,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:16,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 20:34:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:16,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:34:16,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:16,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:16,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:16,948 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239437951] [2023-11-23 20:34:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239437951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760738222] [2023-11-23 20:34:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:16,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:16,960 INFO L87 Difference]: Start difference. First operand 11046 states and 31133 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:17,819 INFO L93 Difference]: Finished difference Result 11044 states and 31131 transitions. [2023-11-23 20:34:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:17,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 20:34:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:17,927 INFO L225 Difference]: With dead ends: 11044 [2023-11-23 20:34:17,927 INFO L226 Difference]: Without dead ends: 11044 [2023-11-23 20:34:17,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:17,931 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 42 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:17,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 72 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 20:34:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2023-11-23 20:34:18,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 11044. [2023-11-23 20:34:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11044 states, 9746 states have (on average 3.194233531705315) internal successors, (31131), 11043 states have internal predecessors, (31131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 31131 transitions. [2023-11-23 20:34:18,816 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 31131 transitions. Word has length 3 [2023-11-23 20:34:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:18,817 INFO L495 AbstractCegarLoop]: Abstraction has 11044 states and 31131 transitions. [2023-11-23 20:34:18,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 31131 transitions. [2023-11-23 20:34:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:34:18,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:18,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:34:18,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:19,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:19,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:19,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash 18169468, now seen corresponding path program 1 times [2023-11-23 20:34:19,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305095503] [2023-11-23 20:34:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:19,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:19,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:19,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 20:34:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:19,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:34:19,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:19,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:19,194 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:19,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305095503] [2023-11-23 20:34:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305095503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434169278] [2023-11-23 20:34:19,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:19,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:19,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:19,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:19,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:19,204 INFO L87 Difference]: Start difference. First operand 11044 states and 31131 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2023-11-23 20:34:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:19,692 INFO L93 Difference]: Finished difference Result 11044 states and 31130 transitions. [2023-11-23 20:34:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 [2023-11-23 20:34:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:19,752 INFO L225 Difference]: With dead ends: 11044 [2023-11-23 20:34:19,753 INFO L226 Difference]: Without dead ends: 11044 [2023-11-23 20:34:19,753 INFO L412 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 [2023-11-23 20:34:19,754 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 115 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:19,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 50 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 20:34:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2023-11-23 20:34:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 11044. [2023-11-23 20:34:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11044 states, 9746 states have (on average 3.194130925507901) internal successors, (31130), 11043 states have internal predecessors, (31130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:20,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 31130 transitions. [2023-11-23 20:34:20,310 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 31130 transitions. Word has length 4 [2023-11-23 20:34:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:20,311 INFO L495 AbstractCegarLoop]: Abstraction has 11044 states and 31130 transitions. [2023-11-23 20:34:20,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2023-11-23 20:34:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 31130 transitions. [2023-11-23 20:34:20,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:34:20,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:20,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:34:20,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:20,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:20,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 283259626, now seen corresponding path program 1 times [2023-11-23 20:34:20,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:20,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825103540] [2023-11-23 20:34:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:20,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:20,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:20,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:20,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 20:34:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:20,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:34:20,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:20,890 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 20:34:20,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 20:34:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:20,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:20,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825103540] [2023-11-23 20:34:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825103540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:20,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:34:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137453581] [2023-11-23 20:34:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:20,926 INFO L87 Difference]: Start difference. First operand 11044 states and 31130 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:21,465 INFO L93 Difference]: Finished difference Result 10840 states and 30506 transitions. [2023-11-23 20:34:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:34:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:21,517 INFO L225 Difference]: With dead ends: 10840 [2023-11-23 20:34:21,518 INFO L226 Difference]: Without dead ends: 10840 [2023-11-23 20:34:21,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:21,519 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:21,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2023-11-23 20:34:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 10817. [2023-11-23 20:34:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10817 states, 9570 states have (on average 3.185266457680251) internal successors, (30483), 10816 states have internal predecessors, (30483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10817 states to 10817 states and 30483 transitions. [2023-11-23 20:34:21,991 INFO L78 Accepts]: Start accepts. Automaton has 10817 states and 30483 transitions. Word has length 6 [2023-11-23 20:34:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:21,991 INFO L495 AbstractCegarLoop]: Abstraction has 10817 states and 30483 transitions. [2023-11-23 20:34:21,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 10817 states and 30483 transitions. [2023-11-23 20:34:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:34:21,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:21,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 20:34:22,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:22,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:22,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:22,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 283259627, now seen corresponding path program 1 times [2023-11-23 20:34:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:22,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985647539] [2023-11-23 20:34:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:22,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:22,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:22,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:22,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 20:34:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:22,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:34:22,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:22,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 20:34:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:22,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:22,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985647539] [2023-11-23 20:34:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985647539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:22,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144788258] [2023-11-23 20:34:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:22,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:22,577 INFO L87 Difference]: Start difference. First operand 10817 states and 30483 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:23,275 INFO L93 Difference]: Finished difference Result 10613 states and 29859 transitions. [2023-11-23 20:34:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:23,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 20:34:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:23,337 INFO L225 Difference]: With dead ends: 10613 [2023-11-23 20:34:23,337 INFO L226 Difference]: Without dead ends: 10612 [2023-11-23 20:34:23,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:23,339 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:23,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 34 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:34:23,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2023-11-23 20:34:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 10589. [2023-11-23 20:34:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10589 states, 9393 states have (on average 3.176301501117854) internal successors, (29835), 10588 states have internal predecessors, (29835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 29835 transitions. [2023-11-23 20:34:23,784 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 29835 transitions. Word has length 6 [2023-11-23 20:34:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:23,784 INFO L495 AbstractCegarLoop]: Abstraction has 10589 states and 29835 transitions. [2023-11-23 20:34:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 29835 transitions. [2023-11-23 20:34:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:34:23,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:23,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:23,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:23,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:23,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1629581395, now seen corresponding path program 1 times [2023-11-23 20:34:23,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:23,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873158064] [2023-11-23 20:34:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:23,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:24,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 20:34:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:24,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:34:24,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:24,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:24,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:24,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873158064] [2023-11-23 20:34:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873158064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:24,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:24,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:34:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210596196] [2023-11-23 20:34:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:24,306 INFO L87 Difference]: Start difference. First operand 10589 states and 29835 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:24,858 INFO L93 Difference]: Finished difference Result 10601 states and 29846 transitions. [2023-11-23 20:34:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 20:34:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:24,905 INFO L225 Difference]: With dead ends: 10601 [2023-11-23 20:34:24,905 INFO L226 Difference]: Without dead ends: 10601 [2023-11-23 20:34:24,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:24,906 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 50 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:24,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 130 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10601 states. [2023-11-23 20:34:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10601 to 10575. [2023-11-23 20:34:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10575 states, 9389 states have (on average 3.1761635956970924) internal successors, (29821), 10574 states have internal predecessors, (29821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10575 states to 10575 states and 29821 transitions. [2023-11-23 20:34:25,228 INFO L78 Accepts]: Start accepts. Automaton has 10575 states and 29821 transitions. Word has length 8 [2023-11-23 20:34:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:25,229 INFO L495 AbstractCegarLoop]: Abstraction has 10575 states and 29821 transitions. [2023-11-23 20:34:25,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 10575 states and 29821 transitions. [2023-11-23 20:34:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:34:25,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:25,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:25,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:25,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:25,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:25,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1022581254, now seen corresponding path program 1 times [2023-11-23 20:34:25,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:25,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047002321] [2023-11-23 20:34:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:25,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:25,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:25,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 20:34:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:25,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:34:25,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:25,828 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 20:34:25,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 20:34:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:25,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:25,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:25,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047002321] [2023-11-23 20:34:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047002321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:25,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:25,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:34:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920806082] [2023-11-23 20:34:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:25,882 INFO L87 Difference]: Start difference. First operand 10575 states and 29821 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:26,394 INFO L93 Difference]: Finished difference Result 10568 states and 29786 transitions. [2023-11-23 20:34:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 20:34:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:26,435 INFO L225 Difference]: With dead ends: 10568 [2023-11-23 20:34:26,435 INFO L226 Difference]: Without dead ends: 10568 [2023-11-23 20:34:26,436 INFO L412 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 [2023-11-23 20:34:26,437 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 81 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:26,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 48 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2023-11-23 20:34:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 10545. [2023-11-23 20:34:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10545 states, 9373 states have (on average 3.175397418115865) internal successors, (29763), 10544 states have internal predecessors, (29763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10545 states to 10545 states and 29763 transitions. [2023-11-23 20:34:26,698 INFO L78 Accepts]: Start accepts. Automaton has 10545 states and 29763 transitions. Word has length 9 [2023-11-23 20:34:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:26,698 INFO L495 AbstractCegarLoop]: Abstraction has 10545 states and 29763 transitions. [2023-11-23 20:34:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 10545 states and 29763 transitions. [2023-11-23 20:34:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:34:26,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:26,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:26,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:26,907 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1022581253, now seen corresponding path program 1 times [2023-11-23 20:34:26,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236113517] [2023-11-23 20:34:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:26,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:26,912 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:26,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 20:34:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:27,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 20:34:27,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:27,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 20:34:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:27,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:27,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236113517] [2023-11-23 20:34:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236113517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143890844] [2023-11-23 20:34:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:27,434 INFO L87 Difference]: Start difference. First operand 10545 states and 29763 transitions. Second operand has 4 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) [2023-11-23 20:34:28,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:28,032 INFO L93 Difference]: Finished difference Result 10538 states and 29728 transitions. [2023-11-23 20:34:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:28,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2023-11-23 20:34:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:28,074 INFO L225 Difference]: With dead ends: 10538 [2023-11-23 20:34:28,074 INFO L226 Difference]: Without dead ends: 10538 [2023-11-23 20:34:28,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:28,075 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 157 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:28,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 34 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2023-11-23 20:34:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10515. [2023-11-23 20:34:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10515 states, 9357 states have (on average 3.1746286202842793) internal successors, (29705), 10514 states have internal predecessors, (29705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:28,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 29705 transitions. [2023-11-23 20:34:28,468 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 29705 transitions. Word has length 9 [2023-11-23 20:34:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 10515 states and 29705 transitions. [2023-11-23 20:34:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-11-23 20:34:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 29705 transitions. [2023-11-23 20:34:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:34:28,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:28,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:28,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:28,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:28,678 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:28,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1022584457, now seen corresponding path program 1 times [2023-11-23 20:34:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367856152] [2023-11-23 20:34:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:28,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:28,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:28,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:28,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 20:34:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:28,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:34:28,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:28,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:28,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:28,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367856152] [2023-11-23 20:34:28,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367856152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:28,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:28,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:28,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984124563] [2023-11-23 20:34:28,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:28,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:28,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:28,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:28,895 INFO L87 Difference]: Start difference. First operand 10515 states and 29705 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:29,444 INFO L93 Difference]: Finished difference Result 9610 states and 27120 transitions. [2023-11-23 20:34:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 20:34:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:29,478 INFO L225 Difference]: With dead ends: 9610 [2023-11-23 20:34:29,479 INFO L226 Difference]: Without dead ends: 9610 [2023-11-23 20:34:29,479 INFO L412 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 [2023-11-23 20:34:29,480 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:29,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 24 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9610 states. [2023-11-23 20:34:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9610 to 9610. [2023-11-23 20:34:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 8653 states have (on average 3.1341731191494278) internal successors, (27120), 9609 states have internal predecessors, (27120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:29,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 27120 transitions. [2023-11-23 20:34:29,865 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 27120 transitions. Word has length 9 [2023-11-23 20:34:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:29,866 INFO L495 AbstractCegarLoop]: Abstraction has 9610 states and 27120 transitions. [2023-11-23 20:34:29,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 27120 transitions. [2023-11-23 20:34:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:34:29,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:29,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:29,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:30,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:30,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:30,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1022584456, now seen corresponding path program 1 times [2023-11-23 20:34:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:30,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933328682] [2023-11-23 20:34:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:30,092 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:30,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 20:34:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:30,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 20:34:30,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:30,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:30,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:30,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933328682] [2023-11-23 20:34:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933328682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:34:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549442355] [2023-11-23 20:34:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:30,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:34:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:34:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:34:30,360 INFO L87 Difference]: Start difference. First operand 9610 states and 27120 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:30,954 INFO L93 Difference]: Finished difference Result 8725 states and 24555 transitions. [2023-11-23 20:34:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:34:30,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 20:34:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:30,984 INFO L225 Difference]: With dead ends: 8725 [2023-11-23 20:34:30,984 INFO L226 Difference]: Without dead ends: 8725 [2023-11-23 20:34:30,985 INFO L412 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 [2023-11-23 20:34:30,985 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:30,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 48 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:34:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2023-11-23 20:34:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 8717. [2023-11-23 20:34:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8717 states, 7956 states have (on average 3.0854700854700856) internal successors, (24548), 8716 states have internal predecessors, (24548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 24548 transitions. [2023-11-23 20:34:31,285 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 24548 transitions. Word has length 9 [2023-11-23 20:34:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:31,285 INFO L495 AbstractCegarLoop]: Abstraction has 8717 states and 24548 transitions. [2023-11-23 20:34:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 24548 transitions. [2023-11-23 20:34:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:34:31,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:31,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:31,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:31,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:31,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 849192284, now seen corresponding path program 1 times [2023-11-23 20:34:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196509878] [2023-11-23 20:34:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:31,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:31,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:31,495 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:31,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 20:34:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:31,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 20:34:31,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:31,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:31,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:31,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:31,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196509878] [2023-11-23 20:34:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196509878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:31,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:34:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842080232] [2023-11-23 20:34:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:31,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:34:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:34:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:31,767 INFO L87 Difference]: Start difference. First operand 8717 states and 24548 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:33,080 INFO L93 Difference]: Finished difference Result 7589 states and 21082 transitions. [2023-11-23 20:34:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:34:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:34:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:33,111 INFO L225 Difference]: With dead ends: 7589 [2023-11-23 20:34:33,111 INFO L226 Difference]: Without dead ends: 7589 [2023-11-23 20:34:33,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:34:33,112 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 232 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:33,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 137 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 20:34:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2023-11-23 20:34:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 7298. [2023-11-23 20:34:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7298 states, 6810 states have (on average 3.007488986784141) internal successors, (20481), 7297 states have internal predecessors, (20481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7298 states to 7298 states and 20481 transitions. [2023-11-23 20:34:33,361 INFO L78 Accepts]: Start accepts. Automaton has 7298 states and 20481 transitions. Word has length 11 [2023-11-23 20:34:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:33,362 INFO L495 AbstractCegarLoop]: Abstraction has 7298 states and 20481 transitions. [2023-11-23 20:34:33,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 7298 states and 20481 transitions. [2023-11-23 20:34:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:34:33,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:33,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:33,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:33,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:33,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:33,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 849192285, now seen corresponding path program 1 times [2023-11-23 20:34:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961203290] [2023-11-23 20:34:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:33,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:33,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:33,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:33,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 20:34:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:33,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 20:34:33,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:33,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:33,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:33,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961203290] [2023-11-23 20:34:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961203290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:34:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188266218] [2023-11-23 20:34:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:34:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:34:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:33,911 INFO L87 Difference]: Start difference. First operand 7298 states and 20481 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:35,183 INFO L93 Difference]: Finished difference Result 6299 states and 17439 transitions. [2023-11-23 20:34:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:34:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 20:34:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:35,211 INFO L225 Difference]: With dead ends: 6299 [2023-11-23 20:34:35,211 INFO L226 Difference]: Without dead ends: 6293 [2023-11-23 20:34:35,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:34:35,212 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 164 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:35,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 139 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 20:34:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2023-11-23 20:34:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 6293. [2023-11-23 20:34:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 5889 states have (on average 2.957717778909832) internal successors, (17418), 6292 states have internal predecessors, (17418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 17418 transitions. [2023-11-23 20:34:35,424 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 17418 transitions. Word has length 11 [2023-11-23 20:34:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:35,424 INFO L495 AbstractCegarLoop]: Abstraction has 6293 states and 17418 transitions. [2023-11-23 20:34:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:35,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 17418 transitions. [2023-11-23 20:34:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:34:35,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:35,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:35,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:35,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:35,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1552720178, now seen corresponding path program 1 times [2023-11-23 20:34:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266868130] [2023-11-23 20:34:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:35,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:35,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:35,635 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:35,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-23 20:34:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:35,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 20:34:35,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:35,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:35,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:35,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266868130] [2023-11-23 20:34:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266868130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:34:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930156589] [2023-11-23 20:34:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:34:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:34:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:35,923 INFO L87 Difference]: Start difference. First operand 6293 states and 17418 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2023-11-23 20:34:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:37,276 INFO L93 Difference]: Finished difference Result 5593 states and 15256 transitions. [2023-11-23 20:34:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:34:37,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2023-11-23 20:34:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:37,300 INFO L225 Difference]: With dead ends: 5593 [2023-11-23 20:34:37,300 INFO L226 Difference]: Without dead ends: 5593 [2023-11-23 20:34:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:34:37,301 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 196 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:37,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 142 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 20:34:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2023-11-23 20:34:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5328. [2023-11-23 20:34:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5068 states have (on average 2.904498816101026) internal successors, (14720), 5327 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 14720 transitions. [2023-11-23 20:34:37,485 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 14720 transitions. Word has length 14 [2023-11-23 20:34:37,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:37,486 INFO L495 AbstractCegarLoop]: Abstraction has 5328 states and 14720 transitions. [2023-11-23 20:34:37,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2023-11-23 20:34:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 14720 transitions. [2023-11-23 20:34:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:34:37,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:37,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:37,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-23 20:34:37,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:37,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1552720177, now seen corresponding path program 1 times [2023-11-23 20:34:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8152537] [2023-11-23 20:34:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:37,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:37,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:37,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:37,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-23 20:34:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:37,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 20:34:37,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:37,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:38,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:38,093 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8152537] [2023-11-23 20:34:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8152537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:38,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 20:34:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497909212] [2023-11-23 20:34:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:34:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:34:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:38,096 INFO L87 Difference]: Start difference. First operand 5328 states and 14720 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2023-11-23 20:34:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:39,357 INFO L93 Difference]: Finished difference Result 4674 states and 12727 transitions. [2023-11-23 20:34:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 20:34:39,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2023-11-23 20:34:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:39,376 INFO L225 Difference]: With dead ends: 4674 [2023-11-23 20:34:39,376 INFO L226 Difference]: Without dead ends: 4664 [2023-11-23 20:34:39,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 20:34:39,377 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 131 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:39,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 141 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 20:34:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2023-11-23 20:34:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 4664. [2023-11-23 20:34:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4434 states have (on average 2.8615245827695084) internal successors, (12688), 4663 states have internal predecessors, (12688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 12688 transitions. [2023-11-23 20:34:39,502 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 12688 transitions. Word has length 14 [2023-11-23 20:34:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:39,503 INFO L495 AbstractCegarLoop]: Abstraction has 4664 states and 12688 transitions. [2023-11-23 20:34:39,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2023-11-23 20:34:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 12688 transitions. [2023-11-23 20:34:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:34:39,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:39,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:39,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:39,710 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:39,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1555357890, now seen corresponding path program 1 times [2023-11-23 20:34:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358870924] [2023-11-23 20:34:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:39,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:39,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:39,713 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:39,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-23 20:34:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:40,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 20:34:40,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:40,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:40,112 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 20:34:40,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 20:34:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:40,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:40,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:40,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358870924] [2023-11-23 20:34:40,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358870924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:40,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:40,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854767527] [2023-11-23 20:34:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:40,124 INFO L87 Difference]: Start difference. First operand 4664 states and 12688 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-23 20:34:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:40,714 INFO L93 Difference]: Finished difference Result 4088 states and 11056 transitions. [2023-11-23 20:34:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:40,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 [2023-11-23 20:34:40,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:40,724 INFO L225 Difference]: With dead ends: 4088 [2023-11-23 20:34:40,724 INFO L226 Difference]: Without dead ends: 4088 [2023-11-23 20:34:40,724 INFO L412 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 [2023-11-23 20:34:40,725 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 114 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:40,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 43 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:34:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2023-11-23 20:34:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 4088. [2023-11-23 20:34:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3922 states have (on average 2.818969913309536) internal successors, (11056), 4087 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11056 transitions. [2023-11-23 20:34:40,806 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11056 transitions. Word has length 14 [2023-11-23 20:34:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:40,807 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 11056 transitions. [2023-11-23 20:34:40,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-23 20:34:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11056 transitions. [2023-11-23 20:34:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:34:40,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:40,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:40,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:41,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:41,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:41,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1555357889, now seen corresponding path program 1 times [2023-11-23 20:34:41,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:41,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394737522] [2023-11-23 20:34:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:41,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:41,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:41,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 20:34:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:41,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 20:34:41,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:41,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:41,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:41,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 20:34:41,480 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 20:34:41,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 20:34:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:41,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:41,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:41,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394737522] [2023-11-23 20:34:41,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394737522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:41,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:41,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:41,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442515263] [2023-11-23 20:34:41,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:41,500 INFO L87 Difference]: Start difference. First operand 4088 states and 11056 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-23 20:34:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:42,192 INFO L93 Difference]: Finished difference Result 3520 states and 9431 transitions. [2023-11-23 20:34:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:42,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 [2023-11-23 20:34:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:42,203 INFO L225 Difference]: With dead ends: 3520 [2023-11-23 20:34:42,204 INFO L226 Difference]: Without dead ends: 3520 [2023-11-23 20:34:42,204 INFO L412 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 [2023-11-23 20:34:42,205 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 90 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:42,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 59 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 20:34:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2023-11-23 20:34:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 3512. [2023-11-23 20:34:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 3410 states have (on average 2.7636363636363637) internal successors, (9424), 3511 states have internal predecessors, (9424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 9424 transitions. [2023-11-23 20:34:42,285 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 9424 transitions. Word has length 14 [2023-11-23 20:34:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:42,285 INFO L495 AbstractCegarLoop]: Abstraction has 3512 states and 9424 transitions. [2023-11-23 20:34:42,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2023-11-23 20:34:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 9424 transitions. [2023-11-23 20:34:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:34:42,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:42,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:42,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:42,494 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:42,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:42,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1166405923, now seen corresponding path program 1 times [2023-11-23 20:34:42,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:42,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542025322] [2023-11-23 20:34:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:42,498 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:42,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-23 20:34:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:42,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 20:34:42,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:42,806 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,807 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,808 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,817 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 32 treesize of output 41 [2023-11-23 20:34:42,893 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:42,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:34:42,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-11-23 20:34:43,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:34:43,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 161 treesize of output 65 [2023-11-23 20:34:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:43,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:43,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542025322] [2023-11-23 20:34:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542025322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:43,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:43,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:34:43,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963183779] [2023-11-23 20:34:43,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:43,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:34:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:34:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:34:43,087 INFO L87 Difference]: Start difference. First operand 3512 states and 9424 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2023-11-23 20:34:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:47,181 INFO L93 Difference]: Finished difference Result 4125 states and 11076 transitions. [2023-11-23 20:34:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:34:47,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 [2023-11-23 20:34:47,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:47,193 INFO L225 Difference]: With dead ends: 4125 [2023-11-23 20:34:47,193 INFO L226 Difference]: Without dead ends: 4125 [2023-11-23 20:34:47,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:34:47,194 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 71 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:47,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 91 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 20:34:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4125 states. [2023-11-23 20:34:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4125 to 3865. [2023-11-23 20:34:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3765 states have (on average 2.753784860557769) internal successors, (10368), 3864 states have internal predecessors, (10368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 10368 transitions. [2023-11-23 20:34:47,261 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 10368 transitions. Word has length 14 [2023-11-23 20:34:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:47,262 INFO L495 AbstractCegarLoop]: Abstraction has 3865 states and 10368 transitions. [2023-11-23 20:34:47,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2023-11-23 20:34:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 10368 transitions. [2023-11-23 20:34:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:34:47,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:47,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:47,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:47,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:47,465 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:47,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash -50293589, now seen corresponding path program 1 times [2023-11-23 20:34:47,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:47,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790826839] [2023-11-23 20:34:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:47,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:47,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:47,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:47,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-23 20:34:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:47,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 20:34:47,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:47,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:47,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:47,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 20:34:47,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-11-23 20:34:47,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 20:34:47,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 63 [2023-11-23 20:34:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:47,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:47,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:47,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790826839] [2023-11-23 20:34:47,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790826839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:47,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:47,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:34:47,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673200386] [2023-11-23 20:34:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:47,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:34:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:34:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:47,905 INFO L87 Difference]: Start difference. First operand 3865 states and 10368 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:49,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:49,294 INFO L93 Difference]: Finished difference Result 4828 states and 12919 transitions. [2023-11-23 20:34:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:34:49,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-23 20:34:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:49,307 INFO L225 Difference]: With dead ends: 4828 [2023-11-23 20:34:49,308 INFO L226 Difference]: Without dead ends: 4828 [2023-11-23 20:34:49,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:34:49,309 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 52 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:49,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 70 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 20:34:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2023-11-23 20:34:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4078. [2023-11-23 20:34:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 3979 states have (on average 2.754209600402111) internal successors, (10959), 4077 states have internal predecessors, (10959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 10959 transitions. [2023-11-23 20:34:49,397 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 10959 transitions. Word has length 16 [2023-11-23 20:34:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:49,397 INFO L495 AbstractCegarLoop]: Abstraction has 4078 states and 10959 transitions. [2023-11-23 20:34:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 10959 transitions. [2023-11-23 20:34:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:34:49,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:49,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:49,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:49,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:49,599 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:49,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1311273398, now seen corresponding path program 1 times [2023-11-23 20:34:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581218766] [2023-11-23 20:34:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:49,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:49,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:49,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:49,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 20:34:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:49,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 20:34:49,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:34:49,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 20:34:49,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 20:34:50,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 20:34:50,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 20:34:50,232 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 20:34:50,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 20:34:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:34:50,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:34:50,249 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:34:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581218766] [2023-11-23 20:34:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581218766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:34:50,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:34:50,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:34:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114516349] [2023-11-23 20:34:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:34:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:34:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:34:50,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:34:50,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:34:50,251 INFO L87 Difference]: Start difference. First operand 4078 states and 10959 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:34:51,643 INFO L93 Difference]: Finished difference Result 4370 states and 11551 transitions. [2023-11-23 20:34:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:34:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2023-11-23 20:34:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:34:51,653 INFO L225 Difference]: With dead ends: 4370 [2023-11-23 20:34:51,653 INFO L226 Difference]: Without dead ends: 4370 [2023-11-23 20:34:51,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:34:51,653 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 287 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 20:34:51,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 98 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 20:34:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2023-11-23 20:34:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 3733. [2023-11-23 20:34:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3733 states, 3669 states have (on average 2.722812755519215) internal successors, (9990), 3732 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 9990 transitions. [2023-11-23 20:34:51,737 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 9990 transitions. Word has length 17 [2023-11-23 20:34:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:34:51,738 INFO L495 AbstractCegarLoop]: Abstraction has 3733 states and 9990 transitions. [2023-11-23 20:34:51,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:34:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 9990 transitions. [2023-11-23 20:34:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:34:51,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:51,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:34:51,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:51,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (and 60 more)] === [2023-11-23 20:34:51,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash -291115448, now seen corresponding path program 1 times [2023-11-23 20:34:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:34:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027301338] [2023-11-23 20:34:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:34:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:34:51,942 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:34:51,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53f402c5-6377-4919-9d21-bff1be50ff33/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-23 20:34:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:34:52,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core