./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:48:18,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:48:18,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-12 00:48:18,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:48:18,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:48:18,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:48:18,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:48:18,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:48:18,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:48:18,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:48:18,926 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:48:18,928 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:48:18,928 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:48:18,930 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:48:18,930 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:48:18,931 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:48:18,932 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:48:18,933 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:48:18,933 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:48:18,934 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:48:18,934 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:48:18,935 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:48:18,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:48:18,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:48:18,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:48:18,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:48:18,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:48:18,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:48:18,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:48:18,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:48:18,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:48:18,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:48:18,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:48:18,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:48:18,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:48:18,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:48:18,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:48:18,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:48:18,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:48:18,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:48:18,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:48:18,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:48:18,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:18,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:48:18,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:48:18,944 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:48:18,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:48:18,945 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:48:18,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:48:18,945 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_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-11-12 00:48:19,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:48:19,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:48:19,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:48:19,280 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:48:19,281 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:48:19,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-12 00:48:22,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:48:22,620 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:48:22,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-12 00:48:22,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/2c7576bbd/99b02deb8ff145579e8e4071130784a1/FLAG0882a60c6 [2023-11-12 00:48:22,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/2c7576bbd/99b02deb8ff145579e8e4071130784a1 [2023-11-12 00:48:22,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:48:22,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:48:22,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:22,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:48:22,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:48:22,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:22" (1/1) ... [2023-11-12 00:48:22,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc83ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:22, skipping insertion in model container [2023-11-12 00:48:22,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:22" (1/1) ... [2023-11-12 00:48:22,982 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:23,497 WARN L577 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-12 00:48:23,498 WARN L577 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-12 00:48:23,499 WARN L577 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-11-12 00:48:23,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:23,567 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) [2023-11-12 00:48:23,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@263f73e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:23, skipping insertion in model container [2023-11-12 00:48:23,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:23,568 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:48:23,571 INFO L158 Benchmark]: Toolchain (without parser) took 659.48ms. Allocated memory is still 157.3MB. Free memory was 110.9MB in the beginning and 96.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:48:23,572 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:48:23,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.92ms. Allocated memory is still 157.3MB. Free memory was 110.9MB in the beginning and 96.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:48:23,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.92ms. Allocated memory is still 157.3MB. Free memory was 110.9MB in the beginning and 96.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 860]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:48:26,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:48:26,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-12 00:48:26,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:48:26,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:48:26,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:48:26,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:48:26,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:48:26,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:48:26,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:48:26,352 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:48:26,353 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:48:26,353 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:48:26,355 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:48:26,356 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:48:26,356 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:48:26,357 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:48:26,357 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:48:26,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:48:26,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:48:26,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:48:26,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:48:26,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:48:26,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:48:26,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:48:26,362 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:48:26,363 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:48:26,363 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:48:26,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:48:26,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:48:26,366 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:48:26,366 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:48:26,366 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:48:26,367 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:48:26,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:48:26,367 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:48:26,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:48:26,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:48:26,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:48:26,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:26,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:48:26,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:48:26,370 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:48:26,370 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:48:26,371 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:48:26,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:48:26,371 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_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-11-12 00:48:26,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:48:26,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:48:26,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:48:26,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:48:26,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:48:26,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-12 00:48:30,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:48:30,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:48:30,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-12 00:48:30,404 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/698a591fb/e12416efdb2742caa7fb19b704a68858/FLAG44d50b53d [2023-11-12 00:48:30,421 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/data/698a591fb/e12416efdb2742caa7fb19b704a68858 [2023-11-12 00:48:30,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:48:30,426 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:48:30,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:30,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:48:30,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:48:30,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:30" (1/1) ... [2023-11-12 00:48:30,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6322d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:30, skipping insertion in model container [2023-11-12 00:48:30,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:48:30" (1/1) ... [2023-11-12 00:48:30,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:31,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:31,196 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:48:31,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:48:31,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:31,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:48:31,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:48:31,503 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:48:31,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31 WrapperNode [2023-11-12 00:48:31,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:48:31,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:31,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:48:31,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:48:31,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,589 INFO L138 Inliner]: procedures = 235, calls = 76, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 121 [2023-11-12 00:48:31,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:48:31,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:48:31,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:48:31,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:48:31,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:48:31,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:48:31,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:48:31,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:48:31,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (1/1) ... [2023-11-12 00:48:31,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:48:31,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:48:31,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:48:31,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:48:31,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:48:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:48:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-11-12 00:48:31,785 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-11-12 00:48:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:48:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:48:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-11-12 00:48:31,786 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-12 00:48:31,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:48:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:48:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-12 00:48:31,787 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-12 00:48:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:48:31,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:48:31,945 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:48:31,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:48:32,595 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:48:32,605 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:48:32,606 INFO L302 CfgBuilder]: Removed 41 assume(true) statements. [2023-11-12 00:48:32,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:32 BoogieIcfgContainer [2023-11-12 00:48:32,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:48:32,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:48:32,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:48:32,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:48:32,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:48:30" (1/3) ... [2023-11-12 00:48:32,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37763f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:32, skipping insertion in model container [2023-11-12 00:48:32,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:48:31" (2/3) ... [2023-11-12 00:48:32,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37763f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:48:32, skipping insertion in model container [2023-11-12 00:48:32,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:48:32" (3/3) ... [2023-11-12 00:48:32,622 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-11-12 00:48:32,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:48:32,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:48:32,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:48:32,730 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;@1b09e8d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:48:32,730 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:48:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 112 states have internal predecessors, (160), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-12 00:48:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:48:32,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:32,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:32,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:48:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:32,755 INFO L85 PathProgramCache]: Analyzing trace with hash 949299624, now seen corresponding path program 1 times [2023-11-12 00:48:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:32,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507444917] [2023-11-12 00:48:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:32,776 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 [2023-11-12 00:48:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:32,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:48:32,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:48:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:32,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 00:48:32,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:32,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:32,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:32,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507444917] [2023-11-12 00:48:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507444917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:32,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:32,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645796172] [2023-11-12 00:48:32,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:32,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:48:32,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:48:33,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:48:33,009 INFO L87 Difference]: Start difference. First operand has 122 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 112 states have internal predecessors, (160), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:33,054 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions. [2023-11-12 00:48:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:48:33,056 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:48:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:33,068 INFO L225 Difference]: With dead ends: 117 [2023-11-12 00:48:33,069 INFO L226 Difference]: Without dead ends: 115 [2023-11-12 00:48:33,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:48:33,075 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:33,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:48:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-12 00:48:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-12 00:48:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 104 states have internal predecessors, (110), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-12 00:48:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2023-11-12 00:48:33,145 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 11 [2023-11-12 00:48:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:33,146 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2023-11-12 00:48:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:48:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2023-11-12 00:48:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:48:33,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:33,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:33,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:48:33,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:48:33,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1891587604, now seen corresponding path program 1 times [2023-11-12 00:48:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:33,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916941305] [2023-11-12 00:48:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:33,371 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 [2023-11-12 00:48:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:33,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:48:33,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:48:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:33,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:48:33,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:33,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:33,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916941305] [2023-11-12 00:48:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916941305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:33,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:33,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:48:33,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197616034] [2023-11-12 00:48:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:48:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:33,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:48:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:48:33,686 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:48:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:33,914 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2023-11-12 00:48:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:48:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-12 00:48:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:33,917 INFO L225 Difference]: With dead ends: 114 [2023-11-12 00:48:33,917 INFO L226 Difference]: Without dead ends: 114 [2023-11-12 00:48:33,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:48:33,919 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 179 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:33,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 264 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:48:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-12 00:48:33,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-12 00:48:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 103 states have internal predecessors, (109), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-12 00:48:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2023-11-12 00:48:33,937 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 23 [2023-11-12 00:48:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2023-11-12 00:48:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:48:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2023-11-12 00:48:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 00:48:33,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:33,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:33,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-12 00:48:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:48:34,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:48:34,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1913163680, now seen corresponding path program 1 times [2023-11-12 00:48:34,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514624418] [2023-11-12 00:48:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:34,157 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 [2023-11-12 00:48:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:34,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:48:34,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:48:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:34,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 00:48:34,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:34,465 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:48:34,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:48:34,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-11-12 00:48:34,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2023-11-12 00:48:34,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-11-12 00:48:34,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 52 [2023-11-12 00:48:40,753 WARN L293 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 19 DAG size of output: 8 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-12 00:48:40,753 INFO L322 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2023-11-12 00:48:40,754 INFO L351 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 1 case distinctions, treesize of input 18 treesize of output 26 [2023-11-12 00:48:40,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 42 [2023-11-12 00:48:42,386 INFO L322 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2023-11-12 00:48:42,386 INFO L351 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 1 case distinctions, treesize of input 18 treesize of output 26 [2023-11-12 00:48:42,468 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2023-11-12 00:48:45,725 INFO L322 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2023-11-12 00:48:45,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 18 treesize of output 30 [2023-11-12 00:48:45,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 52 [2023-11-12 00:48:45,855 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2023-11-12 00:48:45,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-11-12 00:48:45,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-11-12 00:48:47,730 WARN L876 $PredicateComparison]: unable to prove that (and (= (_ bv3 32) |c_~#gl_list~0.base|) (let ((.cse0 (select |c_#memory_$Pointer$.base| (_ bv3 32)))) (or (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_7 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= (_ bv3 32) (select v_DerPreprocessor_8 (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|))) (= (select v_DerPreprocessor_8 |list_add___list_add_~new#1.offset|) |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (= (store (select (store (store |c_#memory_$Pointer$.base| (_ bv3 32) v_DerPreprocessor_7) |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_8) (_ bv3 32)) |c_~#gl_list~0.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|) .cse0))) (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (Array (_ BitVec 32) (_ BitVec 32))) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse0 (store (select (store (store (store |c_#memory_$Pointer$.base| (_ bv3 32) v_DerPreprocessor_10) |list_add___list_add_~next#1.base| v_arrayElimArr_8) |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_9) (_ bv3 32) v_DerPreprocessor_10) |list_add___list_add_~next#1.base| v_arrayElimArr_8) |c_ULTIMATE.start_gl_insert_~node~1#1.base|) |list_add___list_add_~new#1.offset| |list_add___list_add_~next#1.base|) (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|) (_ bv3 32))) (_ bv3 32)) |c_~#gl_list~0.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (= (select v_arrayElimArr_8 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32))) |c_ULTIMATE.start_gl_insert_~node~1#1.base|) (not (= |c_ULTIMATE.start_gl_insert_~node~1#1.base| |list_add___list_add_~next#1.base|)) (not (= (_ bv3 32) |list_add___list_add_~next#1.base|)))) (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse0 (store (select (store (store |c_#memory_$Pointer$.base| (_ bv3 32) v_arrayElimArr_2) |c_ULTIMATE.start_gl_insert_~node~1#1.base| (store (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_DerPreprocessor_1) (_ bv3 32) v_arrayElimArr_2) |c_ULTIMATE.start_gl_insert_~node~1#1.base|) |list_add___list_add_~new#1.offset| (_ bv3 32)) (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|) (_ bv3 32))) (_ bv3 32)) |c_~#gl_list~0.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base|)) (= (select v_arrayElimArr_2 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32))) |c_ULTIMATE.start_gl_insert_~node~1#1.base|))))) (not (= (_ bv3 32) |c_ULTIMATE.start_gl_insert_~node~1#1.base|))) is different from true [2023-11-12 00:48:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:48:47,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 78 [2023-11-12 00:48:47,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 65 [2023-11-12 00:48:47,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 71 treesize of output 67 [2023-11-12 00:48:47,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 70 [2023-11-12 00:48:47,834 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:48:47,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 56 [2023-11-12 00:48:47,881 INFO L322 Elim1Store]: treesize reduction 17, result has 43.3 percent of original size [2023-11-12 00:48:47,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 68 [2023-11-12 00:48:47,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-11-12 00:48:47,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-11-12 00:48:47,986 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 00:48:47,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2023-11-12 00:48:48,596 INFO L351 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 16 treesize of output 8 [2023-11-12 00:48:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:48:48,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:48,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:48,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514624418] [2023-11-12 00:48:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514624418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:48,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:48:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821883798] [2023-11-12 00:48:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:48,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:48:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:48:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=69, Unknown=2, NotChecked=16, Total=110 [2023-11-12 00:48:48,638 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:48:49,451 WARN L876 $PredicateComparison]: unable to prove that (and (= (bvadd (select |c_#valid| (_ bv3 32)) (_ bv1 1)) (_ bv0 1)) (= (_ bv3 32) |c_~#gl_list~0.base|) (let ((.cse0 (= |c_list_add_#in~new#1.base| |c_list_add_#in~head#1.base|))) (let ((.cse2 (not .cse0)) (.cse3 (select |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base|))) (or (and .cse0 (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_6 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_DerPreprocessor_5) |c_list_add_#in~new#1.base| v_DerPreprocessor_6) |c_list_add_#in~head#1.base|))) (and (= (select v_DerPreprocessor_6 |list_add___list_add_~new#1.offset|) |c_list_add_#in~new#1.base|) (= .cse1 v_DerPreprocessor_5) (= (select v_DerPreprocessor_6 (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|)) |c_list_add_#in~head#1.base|) (= (select |c_#memory_$Pointer$.base| |c_list_add_#in~new#1.base|) (store .cse1 |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) (= |c_list_add_#in~new#1.base| (select v_DerPreprocessor_6 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32)))))))) (and .cse2 (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_1 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse3 (store (select (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_arrayElimArr_2) |c_list_add_#in~new#1.base| (store (store (select (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~new#1.base| v_DerPreprocessor_1) |c_list_add_#in~head#1.base| v_arrayElimArr_2) |c_list_add_#in~new#1.base|) |list_add___list_add_~new#1.offset| |c_list_add_#in~head#1.base|) (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|) |c_list_add_#in~head#1.base|)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) (= |c_list_add_#in~new#1.base| (select v_arrayElimArr_2 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32))))))) (and (exists ((v_DerPreprocessor_12 (Array (_ BitVec 32) (_ BitVec 32))) (|list_add___list_add_~new#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.base| (_ BitVec 32)) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse3 (store (select (let ((.cse4 (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_DerPreprocessor_12) |list_add___list_add_~next#1.base| v_arrayElimArr_10))) (store .cse4 |c_list_add_#in~new#1.base| (store (store (select .cse4 |c_list_add_#in~new#1.base|) |list_add___list_add_~new#1.offset| |list_add___list_add_~next#1.base|) (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|) |c_list_add_#in~head#1.base|))) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) (= (select v_arrayElimArr_10 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32))) |c_list_add_#in~new#1.base|) (not (= |c_list_add_#in~new#1.base| |list_add___list_add_~next#1.base|)))) .cse0) (and (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_3 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_DerPreprocessor_3) |c_list_add_#in~new#1.base| v_DerPreprocessor_4) |c_list_add_#in~head#1.base|))) (and (= (select v_DerPreprocessor_4 (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|)) |c_list_add_#in~head#1.base|) (= |c_list_add_#in~new#1.base| (select v_DerPreprocessor_4 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32)))) (= (select v_DerPreprocessor_4 |list_add___list_add_~new#1.offset|) |c_list_add_#in~head#1.base|) (= .cse5 v_DerPreprocessor_3) (= (store .cse5 |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|) .cse3)))) .cse0) (and (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (Array (_ BitVec 32) (_ BitVec 32))) (v_DerPreprocessor_7 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= .cse3 (store (select (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_DerPreprocessor_7) |c_list_add_#in~new#1.base| v_DerPreprocessor_8) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|)) (= |c_list_add_#in~new#1.base| (select v_DerPreprocessor_8 |list_add___list_add_~new#1.offset|)) (= (select v_DerPreprocessor_8 (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|)) |c_list_add_#in~head#1.base|))) .cse2) (and .cse2 (exists ((|list_add___list_add_~new#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (Array (_ BitVec 32) (_ BitVec 32))) (|list_add___list_add_~next#1.offset| (_ BitVec 32)) (|list_add___list_add_~next#1.base| (_ BitVec 32)) (v_DerPreprocessor_10 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= |c_list_add_#in~new#1.base| (select v_arrayElimArr_8 (bvadd |list_add___list_add_~next#1.offset| (_ bv4 32)))) (not (= |list_add___list_add_~next#1.base| |c_list_add_#in~head#1.base|)) (not (= |c_list_add_#in~new#1.base| |list_add___list_add_~next#1.base|)) (= .cse3 (store (select (store (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~head#1.base| v_DerPreprocessor_10) |list_add___list_add_~next#1.base| v_arrayElimArr_8) |c_list_add_#in~new#1.base| (store (store (select (store (store (store |c_#memory_$Pointer$.base| |c_list_add_#in~new#1.base| v_DerPreprocessor_9) |c_list_add_#in~head#1.base| v_DerPreprocessor_10) |list_add___list_add_~next#1.base| v_arrayElimArr_8) |c_list_add_#in~new#1.base|) |list_add___list_add_~new#1.offset| |list_add___list_add_~next#1.base|) (bvadd (_ bv4 32) |list_add___list_add_~new#1.offset|) |c_list_add_#in~head#1.base|)) |c_list_add_#in~head#1.base|) |c_list_add_#in~head#1.offset| |c_list_add_#in~new#1.base|))))))))) is different from true [2023-11-12 00:48:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:58,687 INFO L93 Difference]: Finished difference Result 216 states and 255 transitions. [2023-11-12 00:48:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:48:58,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-12 00:48:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:58,692 INFO L225 Difference]: With dead ends: 216 [2023-11-12 00:48:58,692 INFO L226 Difference]: Without dead ends: 216 [2023-11-12 00:48:58,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=8, NotChecked=62, Total=342 [2023-11-12 00:48:58,694 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 473 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 71 mSolverCounterUnsat, 135 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 135 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:58,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 545 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 403 Invalid, 135 Unknown, 260 Unchecked, 9.3s Time] [2023-11-12 00:48:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-12 00:48:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 183. [2023-11-12 00:48:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 153 states have (on average 1.2418300653594772) internal successors, (190), 168 states have internal predecessors, (190), 23 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-12 00:48:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 222 transitions. [2023-11-12 00:48:58,715 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 222 transitions. Word has length 26 [2023-11-12 00:48:58,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:58,715 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 222 transitions. [2023-11-12 00:48:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:48:58,716 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 222 transitions. [2023-11-12 00:48:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 00:48:58,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:58,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:58,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:58,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:48:58,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:48:58,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1706864921, now seen corresponding path program 1 times [2023-11-12 00:48:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:58,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065770420] [2023-11-12 00:48:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:58,937 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 [2023-11-12 00:48:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:58,939 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:48:58,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:48:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:59,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-12 00:48:59,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:59,277 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:48:59,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:48:59,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 00:48:59,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 00:48:59,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 65 [2023-11-12 00:48:59,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 61 [2023-11-12 00:48:59,852 INFO L351 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 27 treesize of output 24 [2023-11-12 00:48:59,865 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2023-11-12 00:49:00,052 INFO L322 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2023-11-12 00:49:00,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 120 [2023-11-12 00:49:00,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2023-11-12 00:49:00,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-12 00:49:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:00,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:49:00,567 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:49:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065770420] [2023-11-12 00:49:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065770420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:49:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297584282] [2023-11-12 00:49:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:49:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:49:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:49:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:49:00,570 INFO L87 Difference]: Start difference. First operand 183 states and 222 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:49:03,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:49:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:10,916 INFO L93 Difference]: Finished difference Result 293 states and 350 transitions. [2023-11-12 00:49:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 00:49:10,916 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-12 00:49:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:10,919 INFO L225 Difference]: With dead ends: 293 [2023-11-12 00:49:10,919 INFO L226 Difference]: Without dead ends: 293 [2023-11-12 00:49:10,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:49:10,922 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 232 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 32 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:10,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 473 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 961 Invalid, 7 Unknown, 0 Unchecked, 9.9s Time] [2023-11-12 00:49:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-12 00:49:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 268. [2023-11-12 00:49:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 230 states have (on average 1.2347826086956522) internal successors, (284), 246 states have internal predecessors, (284), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:49:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 326 transitions. [2023-11-12 00:49:10,946 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 326 transitions. Word has length 29 [2023-11-12 00:49:10,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:10,946 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 326 transitions. [2023-11-12 00:49:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 00:49:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 326 transitions. [2023-11-12 00:49:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-12 00:49:10,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:10,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:10,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 00:49:11,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-12 00:49:11,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:11,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1462457616, now seen corresponding path program 1 times [2023-11-12 00:49:11,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:49:11,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657902379] [2023-11-12 00:49:11,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:11,157 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 [2023-11-12 00:49:11,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:49:11,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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) [2023-11-12 00:49:11,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d13f8fca-f8d6-4658-9db5-94b6af0f3fdc/bin/utaipan-verify-NcY6lQBIFX/mathsat -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 [2023-11-12 00:49:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:11,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-12 00:49:11,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:11,464 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:49:11,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:49:11,576 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 00:49:11,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-12 00:49:12,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2023-11-12 00:49:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:49:12,649 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2023-11-12 00:49:12,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-12 00:49:12,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2023-11-12 00:49:12,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2023-11-12 00:49:12,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 11 [2023-11-12 00:49:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:49:12,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-11-12 00:49:12,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2023-11-12 00:49:13,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-12 00:49:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:13,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:49:13,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:49:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657902379] [2023-11-12 00:49:13,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657902379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:13,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:13,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:49:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881060844] [2023-11-12 00:49:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 00:49:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:49:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 00:49:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-12 00:49:13,711 INFO L87 Difference]: Start difference. First operand 268 states and 326 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)