./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:25,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:25,807 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:30:25,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:25,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:25,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:25,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:25,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:25,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:25,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:25,881 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:25,881 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:25,882 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:25,883 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:25,883 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:25,884 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:25,884 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:25,885 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:25,885 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:25,886 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:25,886 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:25,887 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:25,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:30:25,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:30:25,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:25,900 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:25,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:25,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:25,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:25,901 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:30:25,903 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:30:25,904 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:30:25,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:25,904 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:30:25,904 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:30:25,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:25,905 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:25,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:25,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:25,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:25,906 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:25,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:25,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:25,907 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:25,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:25,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:25,908 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:25,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:25,908 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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2023-11-23 21:30:26,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:26,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:26,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:26,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:26,314 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:26,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2023-11-23 21:30:29,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:29,817 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:29,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2023-11-23 21:30:29,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/3ea529f5b/be327681ba18449dbc541e67a6abe731/FLAG03adab323 [2023-11-23 21:30:29,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/3ea529f5b/be327681ba18449dbc541e67a6abe731 [2023-11-23 21:30:29,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:29,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:29,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:29,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:29,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:29,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:29" (1/1) ... [2023-11-23 21:30:29,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487f6912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:29, skipping insertion in model container [2023-11-23 21:30:29,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:29" (1/1) ... [2023-11-23 21:30:29,966 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:30,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:30,506 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 21:30:30,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@500f0719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:30, skipping insertion in model container [2023-11-23 21:30:30,507 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:30,508 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:30:30,510 INFO L158 Benchmark]: Toolchain (without parser) took 635.55ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 117.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:30:30,511 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:30:30,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.77ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 117.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:30:30,514 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 97.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.77ms. Allocated memory is still 163.6MB. Free memory was 131.6MB in the beginning and 117.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:33,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:33,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:30:33,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:33,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:33,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:33,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:33,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:33,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:33,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:33,202 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:33,202 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:33,203 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:33,205 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:33,205 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:33,205 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:33,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:30:33,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:30:33,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:33,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:33,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:33,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:33,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:33,210 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:30:33,211 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:30:33,211 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:30:33,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:33,212 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:30:33,213 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:30:33,213 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:30:33,215 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:30:33,215 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:33,215 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:33,216 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:33,216 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:30:33,216 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:33,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:33,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:33,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:33,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:33,219 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:30:33,219 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:30:33,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:33,220 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:33,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:33,221 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_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2023-11-23 21:30:33,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:33,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:33,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:33,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:33,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:33,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2023-11-23 21:30:36,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:37,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:37,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2023-11-23 21:30:37,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/01365dc08/c27fb30802b442f79cec668ac483397f/FLAG4f59b7b79 [2023-11-23 21:30:37,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/data/01365dc08/c27fb30802b442f79cec668ac483397f [2023-11-23 21:30:37,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:37,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:37,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:37,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:37,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:37,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:37" (1/1) ... [2023-11-23 21:30:37,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268ef9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:37, skipping insertion in model container [2023-11-23 21:30:37,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:37" (1/1) ... [2023-11-23 21:30:37,482 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:37,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:38,004 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:30:38,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:38,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:38,090 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:38,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:38,263 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:30:38,272 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:38,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38 WrapperNode [2023-11-23 21:30:38,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:38,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:38,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:38,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:38,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,332 INFO L138 Inliner]: procedures = 170, calls = 78, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 61 [2023-11-23 21:30:38,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:38,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:38,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:38,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:38,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,352 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:38,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:38,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:38,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:38,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (1/1) ... [2023-11-23 21:30:38,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:38,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:38,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:38,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:30:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:30:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:30:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:30:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:30:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:30:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:30:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:30:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:38,613 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:38,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:38,831 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:38,868 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:38,868 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:30:38,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:38 BoogieIcfgContainer [2023-11-23 21:30:38,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:38,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:38,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:38,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:38,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:37" (1/3) ... [2023-11-23 21:30:38,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cd91c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:38, skipping insertion in model container [2023-11-23 21:30:38,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:38" (2/3) ... [2023-11-23 21:30:38,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cd91c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:38, skipping insertion in model container [2023-11-23 21:30:38,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:38" (3/3) ... [2023-11-23 21:30:38,879 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2023-11-23 21:30:38,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:38,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-23 21:30:38,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:38,952 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;@5226d384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:38,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-23 21:30:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.8) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:30:38,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:38,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:38,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:38,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash -639533649, now seen corresponding path program 1 times [2023-11-23 21:30:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770778073] [2023-11-23 21:30:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:38,995 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 21:30:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:38,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:38,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:39,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:30:39,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:39,226 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 21:30:39,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:39,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:39,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770778073] [2023-11-23 21:30:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770778073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:39,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278483325] [2023-11-23 21:30:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:39,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:39,288 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.8) internal successors, (36), 31 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:39,363 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-11-23 21:30:39,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:39,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-23 21:30:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:39,373 INFO L225 Difference]: With dead ends: 33 [2023-11-23 21:30:39,374 INFO L226 Difference]: Without dead ends: 32 [2023-11-23 21:30:39,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:39,380 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:39,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 93 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-23 21:30:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-23 21:30:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.7) internal successors, (34), 29 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-11-23 21:30:39,417 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2023-11-23 21:30:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:39,417 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-11-23 21:30:39,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-11-23 21:30:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:39,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:39,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:39,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:39,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:39,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:39,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1649293429, now seen corresponding path program 1 times [2023-11-23 21:30:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613905067] [2023-11-23 21:30:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:39,623 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 21:30:39,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:39,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:39,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:30:39,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:39,842 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 21:30:39,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:39,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:39,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613905067] [2023-11-23 21:30:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613905067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630697659] [2023-11-23 21:30:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:39,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:30:39,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:39,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:30:39,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:30:39,846 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:39,983 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2023-11-23 21:30:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:30:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:30:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:39,986 INFO L225 Difference]: With dead ends: 46 [2023-11-23 21:30:39,986 INFO L226 Difference]: Without dead ends: 46 [2023-11-23 21:30:39,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:30:39,988 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:39,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 80 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-23 21:30:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2023-11-23 21:30:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 36 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:39,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-11-23 21:30:39,997 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 11 [2023-11-23 21:30:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:39,997 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-11-23 21:30:39,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-11-23 21:30:39,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:39,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:39,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:40,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:40,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1649344140, now seen corresponding path program 1 times [2023-11-23 21:30:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:40,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883073673] [2023-11-23 21:30:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:40,203 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 21:30:40,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:40,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:40,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:30:40,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:40,367 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 21:30:40,437 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2023-11-23 21:30:40,491 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 21:30:40,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-23 21:30:40,564 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 21:30:40,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:40,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883073673] [2023-11-23 21:30:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883073673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022819461] [2023-11-23 21:30:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:40,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:30:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:30:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-23 21:30:40,570 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:40,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:40,652 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-23 21:30:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:30:40,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:30:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:40,655 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:30:40,655 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:30:40,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-23 21:30:40,657 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:40,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 59 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2023-11-23 21:30:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:30:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-23 21:30:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 35 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-11-23 21:30:40,665 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 11 [2023-11-23 21:30:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:40,665 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-11-23 21:30:40,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-11-23 21:30:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:40,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:40,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:40,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Ended with exit code 0 [2023-11-23 21:30:40,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:40,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1649344139, now seen corresponding path program 1 times [2023-11-23 21:30:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:40,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493207830] [2023-11-23 21:30:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:40,872 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 21:30:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:40,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:40,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:30:40,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:40,963 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 21:30:41,019 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-23 21:30:41,047 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 21:30:41,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-23 21:30:41,089 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 21:30:41,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:41,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493207830] [2023-11-23 21:30:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493207830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:41,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:41,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:41,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082059487] [2023-11-23 21:30:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:41,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:41,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:30:41,098 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:41,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:41,191 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-23 21:30:41,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:41,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:30:41,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:41,193 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:30:41,193 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:30:41,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:30:41,195 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:41,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2023-11-23 21:30:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:30:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-11-23 21:30:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 34 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-23 21:30:41,202 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 11 [2023-11-23 21:30:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:41,203 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-23 21:30:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-23 21:30:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:41,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:41,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:41,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Ended with exit code 0 [2023-11-23 21:30:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:41,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash -902863532, now seen corresponding path program 1 times [2023-11-23 21:30:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494753722] [2023-11-23 21:30:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:41,409 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 21:30:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:41,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:41,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:30:41,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:41,565 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 21:30:41,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:41,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:41,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494753722] [2023-11-23 21:30:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494753722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:41,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:41,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:30:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857372834] [2023-11-23 21:30:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:41,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:41,574 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:41,644 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2023-11-23 21:30:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:30:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:41,646 INFO L225 Difference]: With dead ends: 34 [2023-11-23 21:30:41,646 INFO L226 Difference]: Without dead ends: 34 [2023-11-23 21:30:41,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:41,653 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:41,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 100 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-23 21:30:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-11-23 21:30:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 29 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-23 21:30:41,667 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 11 [2023-11-23 21:30:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:41,667 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-23 21:30:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-23 21:30:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:41,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:41,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:41,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Ended with exit code 0 [2023-11-23 21:30:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:41,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -904659351, now seen corresponding path program 1 times [2023-11-23 21:30:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211044681] [2023-11-23 21:30:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:41,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:41,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:30:41,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:41,990 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 21:30:41,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:41,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:41,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211044681] [2023-11-23 21:30:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211044681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:30:41,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106233042] [2023-11-23 21:30:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:41,994 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:42,074 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-11-23 21:30:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:30:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:30:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:42,078 INFO L225 Difference]: With dead ends: 38 [2023-11-23 21:30:42,078 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:30:42,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:42,081 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:42,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 89 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:30:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2023-11-23 21:30:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.4) internal successors, (35), 31 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-23 21:30:42,092 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 11 [2023-11-23 21:30:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:42,093 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-23 21:30:42,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-11-23 21:30:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:30:42,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:42,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:42,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:42,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash -411511183, now seen corresponding path program 1 times [2023-11-23 21:30:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:42,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231733104] [2023-11-23 21:30:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:42,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:42,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:42,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:42,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:30:42,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:42,374 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 21:30:42,414 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 21:30:42,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:42,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:42,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231733104] [2023-11-23 21:30:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231733104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:42,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145249994] [2023-11-23 21:30:42,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:42,417 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:42,501 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-11-23 21:30:42,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-23 21:30:42,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:42,502 INFO L225 Difference]: With dead ends: 35 [2023-11-23 21:30:42,502 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 21:30:42,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:42,504 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:42,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:42,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 21:30:42,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-11-23 21:30:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:30:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2023-11-23 21:30:42,508 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 12 [2023-11-23 21:30:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:42,509 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2023-11-23 21:30:42,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2023-11-23 21:30:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:30:42,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:42,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:42,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,713 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:42,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2020344399, now seen corresponding path program 1 times [2023-11-23 21:30:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:42,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393565181] [2023-11-23 21:30:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:42,714 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 21:30:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:42,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:42,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:30:42,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:42,906 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#a7~0#1.base_13| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a7~0#1.base_13| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a7~0#1.base_13|)))) is different from true [2023-11-23 21:30:42,907 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 21:30:42,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:42,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:42,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393565181] [2023-11-23 21:30:42,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393565181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:42,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:42,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009575354] [2023-11-23 21:30:42,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:42,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:42,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:42,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:42,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:30:42,910 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:42,983 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-11-23 21:30:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:42,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-23 21:30:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:42,985 INFO L225 Difference]: With dead ends: 36 [2023-11-23 21:30:42,985 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:30:42,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:30:42,986 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:42,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2023-11-23 21:30:42,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:30:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 21:30:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 25 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-23 21:30:42,990 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 12 [2023-11-23 21:30:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:42,990 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-23 21:30:42,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-23 21:30:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:30:42,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:42,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:43,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Ended with exit code 0 [2023-11-23 21:30:43,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:43,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1186731318, now seen corresponding path program 1 times [2023-11-23 21:30:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020751383] [2023-11-23 21:30:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:43,193 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 21:30:43,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:43,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:43,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:30:43,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:43,409 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 21:30:43,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:43,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020751383] [2023-11-23 21:30:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020751383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:43,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59469388] [2023-11-23 21:30:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:43,412 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:43,520 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2023-11-23 21:30:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:30:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 21:30:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:43,521 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:30:43,521 INFO L226 Difference]: Without dead ends: 39 [2023-11-23 21:30:43,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:43,522 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:43,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 69 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-23 21:30:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2023-11-23 21:30:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.434782608695652) internal successors, (33), 28 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-11-23 21:30:43,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2023-11-23 21:30:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:43,526 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-11-23 21:30:43,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-11-23 21:30:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:30:43,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:43,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:43,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:43,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1186731317, now seen corresponding path program 1 times [2023-11-23 21:30:43,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:43,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344543188] [2023-11-23 21:30:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:43,732 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 21:30:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:43,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:43,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:30:43,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:43,866 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 21:30:43,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:43,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344543188] [2023-11-23 21:30:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344543188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:43,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:43,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570659914] [2023-11-23 21:30:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:43,869 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:43,971 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2023-11-23 21:30:43,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:30:43,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 21:30:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:43,973 INFO L225 Difference]: With dead ends: 38 [2023-11-23 21:30:43,973 INFO L226 Difference]: Without dead ends: 38 [2023-11-23 21:30:43,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:43,974 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:43,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 59 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-23 21:30:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2023-11-23 21:30:43,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 28 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-11-23 21:30:43,977 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 14 [2023-11-23 21:30:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:43,978 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-11-23 21:30:43,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-11-23 21:30:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:30:43,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:43,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:43,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:44,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1492918373, now seen corresponding path program 1 times [2023-11-23 21:30:44,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:44,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290505640] [2023-11-23 21:30:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:44,183 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 21:30:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:44,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:44,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:30:44,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:44,273 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 21:30:44,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:44,273 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290505640] [2023-11-23 21:30:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290505640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:30:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721495854] [2023-11-23 21:30:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:44,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:44,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:44,275 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:44,343 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-23 21:30:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:30:44,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:30:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:44,345 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:30:44,345 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 21:30:44,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:44,346 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:44,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 77 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 21:30:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-11-23 21:30:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-23 21:30:44,349 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2023-11-23 21:30:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:44,349 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-23 21:30:44,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-23 21:30:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:30:44,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:44,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:44,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:44,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:44,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1866021598, now seen corresponding path program 1 times [2023-11-23 21:30:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971714834] [2023-11-23 21:30:44,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:44,554 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 21:30:44,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:44,555 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:44,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:30:44,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:44,640 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 21:30:44,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:44,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:44,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971714834] [2023-11-23 21:30:44,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971714834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:44,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:30:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548923760] [2023-11-23 21:30:44,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:44,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:30:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:30:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:30:44,643 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:44,681 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2023-11-23 21:30:44,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:30:44,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:30:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:44,683 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:30:44,683 INFO L226 Difference]: Without dead ends: 31 [2023-11-23 21:30:44,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:30:44,684 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:44,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 48 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-23 21:30:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-11-23 21:30:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-11-23 21:30:44,688 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 15 [2023-11-23 21:30:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:44,688 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-11-23 21:30:44,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-11-23 21:30:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:30:44,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:44,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:44,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1866034819, now seen corresponding path program 1 times [2023-11-23 21:30:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:44,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972490589] [2023-11-23 21:30:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:44,893 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 21:30:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:44,894 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:44,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:30:44,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:45,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:30:45,156 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 21:30:45,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:45,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972490589] [2023-11-23 21:30:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972490589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:45,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:30:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397276520] [2023-11-23 21:30:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:45,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:30:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:30:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:30:45,159 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:45,307 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2023-11-23 21:30:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:30:45,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:30:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:45,309 INFO L225 Difference]: With dead ends: 28 [2023-11-23 21:30:45,309 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:30:45,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:30:45,310 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:45,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 91 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:30:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-23 21:30:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-11-23 21:30:45,313 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 15 [2023-11-23 21:30:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:45,313 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-11-23 21:30:45,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-11-23 21:30:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:30:45,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:45,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:45,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:45,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:45,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:45,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash 964183901, now seen corresponding path program 1 times [2023-11-23 21:30:45,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:45,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551173315] [2023-11-23 21:30:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:45,518 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 21:30:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:45,519 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:45,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:45,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:30:45,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:48,453 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 21:30:48,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:48,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551173315] [2023-11-23 21:30:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551173315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:48,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:48,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:30:48,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089754670] [2023-11-23 21:30:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:30:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:30:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=54, Unknown=2, NotChecked=0, Total=72 [2023-11-23 21:30:48,455 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:50,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:30:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:51,178 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2023-11-23 21:30:51,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:30:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-23 21:30:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:51,180 INFO L225 Difference]: With dead ends: 29 [2023-11-23 21:30:51,180 INFO L226 Difference]: Without dead ends: 22 [2023-11-23 21:30:51,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=21, Invalid=67, Unknown=2, NotChecked=0, Total=90 [2023-11-23 21:30:51,181 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:51,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 2 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 21:30:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-23 21:30:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-23 21:30:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2023-11-23 21:30:51,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2023-11-23 21:30:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:51,184 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2023-11-23 21:30:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2023-11-23 21:30:51,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:30:51,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:51,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:51,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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)] Ended with exit code 0 [2023-11-23 21:30:51,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:51,389 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:51,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2012504459, now seen corresponding path program 1 times [2023-11-23 21:30:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578420915] [2023-11-23 21:30:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:51,390 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 21:30:51,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:51,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:51,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:51,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:30:51,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:51,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:30:51,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 21:30:51,858 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 21:30:51,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:51,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578420915] [2023-11-23 21:30:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578420915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:30:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028169373] [2023-11-23 21:30:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:51,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:30:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:30:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:30:51,860 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:52,218 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2023-11-23 21:30:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:30:52,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-23 21:30:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:52,219 INFO L225 Difference]: With dead ends: 21 [2023-11-23 21:30:52,219 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 21:30:52,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:30:52,220 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:52,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 21:30:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-23 21:30:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2023-11-23 21:30:52,222 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2023-11-23 21:30:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:52,223 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2023-11-23 21:30:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2023-11-23 21:30:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:30:52,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:52,224 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 21:30:52,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:52,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:52,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2036871295, now seen corresponding path program 1 times [2023-11-23 21:30:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466851628] [2023-11-23 21:30:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:52,432 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 21:30:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:52,433 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:52,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:52,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:30:52,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:52,541 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 21:30:52,669 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 15 treesize of output 1 [2023-11-23 21:30:52,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 21:30:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:52,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:52,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:52,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466851628] [2023-11-23 21:30:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466851628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:30:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697339007] [2023-11-23 21:30:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:30:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:30:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:30:52,748 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:52,956 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2023-11-23 21:30:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:30:52,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-23 21:30:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:52,957 INFO L225 Difference]: With dead ends: 20 [2023-11-23 21:30:52,957 INFO L226 Difference]: Without dead ends: 20 [2023-11-23 21:30:52,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:30:52,958 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:52,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:52,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-23 21:30:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-23 21:30:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2023-11-23 21:30:52,961 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2023-11-23 21:30:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:52,962 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2023-11-23 21:30:52,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:30:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2023-11-23 21:30:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:30:52,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:52,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:52,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:53,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:53,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2023-11-23 21:30:53,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1071752019, now seen corresponding path program 1 times [2023-11-23 21:30:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188195431] [2023-11-23 21:30:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:53,175 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 21:30:53,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:53,176 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:53,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:30:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:53,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:30:53,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:53,862 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 15 treesize of output 1 [2023-11-23 21:30:54,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 50 [2023-11-23 21:31:00,349 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 21:31:00,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:00,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:00,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188195431] [2023-11-23 21:31:00,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188195431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:00,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:00,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:31:00,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636423934] [2023-11-23 21:31:00,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:00,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:31:00,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:00,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:31:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=106, Unknown=5, NotChecked=0, Total=132 [2023-11-23 21:31:00,352 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:31:05,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:31:07,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:31:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:09,899 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2023-11-23 21:31:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:31:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-23 21:31:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:09,900 INFO L225 Difference]: With dead ends: 19 [2023-11-23 21:31:09,900 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:31:09,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=43, Invalid=222, Unknown=7, NotChecked=0, Total=272 [2023-11-23 21:31:09,901 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:09,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 5 Unknown, 0 Unchecked, 4.7s Time] [2023-11-23 21:31:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:31:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:31:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 21:31:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:31:09,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-11-23 21:31:09,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:09,902 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:31:09,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:31:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:31:09,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:31:09,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-23 21:31:09,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-23 21:31:09,905 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (8 of 11 remaining) [2023-11-23 21:31:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (7 of 11 remaining) [2023-11-23 21:31:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (6 of 11 remaining) [2023-11-23 21:31:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-23 21:31:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2023-11-23 21:31:09,906 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (3 of 11 remaining) [2023-11-23 21:31:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 11 remaining) [2023-11-23 21:31:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 11 remaining) [2023-11-23 21:31:09,907 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2023-11-23 21:31:09,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:31:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/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 21:31:10,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:10,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:31:10,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:31:10 BoogieIcfgContainer [2023-11-23 21:31:10,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:31:10,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:31:10,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:31:10,122 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:31:10,126 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:38" (3/4) ... [2023-11-23 21:31:10,128 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:31:10,131 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2023-11-23 21:31:10,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-23 21:31:10,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-23 21:31:10,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-23 21:31:10,229 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:31:10,230 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:31:10,230 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:31:10,231 INFO L158 Benchmark]: Toolchain (without parser) took 32849.12ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 45.3MB in the beginning and 82.4MB in the end (delta: -37.1MB). Peak memory consumption was 55.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,231 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:10,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.00ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 45.2MB in the beginning and 53.9MB in the end (delta: -8.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.85ms. Allocated memory is still 92.3MB. Free memory was 53.9MB in the beginning and 51.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,232 INFO L158 Benchmark]: Boogie Preprocessor took 38.60ms. Allocated memory is still 92.3MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,233 INFO L158 Benchmark]: RCFGBuilder took 495.27ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 63.8MB in the end (delta: -14.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,233 INFO L158 Benchmark]: TraceAbstraction took 31249.29ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 63.1MB in the beginning and 32.5MB in the end (delta: 30.6MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,234 INFO L158 Benchmark]: Witness Printer took 108.57ms. Allocated memory is still 111.1MB. Free memory was 32.5MB in the beginning and 82.4MB in the end (delta: -49.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:10,236 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 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.00ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 45.2MB in the beginning and 53.9MB in the end (delta: -8.7MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.85ms. Allocated memory is still 92.3MB. Free memory was 53.9MB in the beginning and 51.5MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.60ms. Allocated memory is still 92.3MB. Free memory was 51.5MB in the beginning and 49.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.27ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 63.8MB in the end (delta: -14.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31249.29ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 63.1MB in the beginning and 32.5MB in the end (delta: 30.6MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Witness Printer took 108.57ms. Allocated memory is still 111.1MB. Free memory was 32.5MB in the beginning and 82.4MB in the end (delta: -49.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 31.2s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 234 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 234 mSDsluCounter, 1150 SdHoareTripleChecker+Invalid, 8.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 117 IncrementalHoareTripleChecker+Unchecked, 805 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 933 IncrementalHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 345 mSDtfsCounter, 933 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 34 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 213 ConstructedInterpolants, 28 QuantifiedInterpolants, 2524 SizeOfPredicates, 74 NumberOfNonLiveVariables, 1077 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:31:10,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4c6d5c-b76e-4d32-85ac-baa488ff9171/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE