./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:57:20,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:57:20,278 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:57:20,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:57:20,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:57:20,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:57:20,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:57:20,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:57:20,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:57:20,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:57:20,337 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:57:20,338 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:57:20,339 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:57:20,341 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:57:20,341 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:57:20,342 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:57:20,342 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:57:20,344 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:57:20,345 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:57:20,345 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:57:20,346 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:57:20,346 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:57:20,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:57:20,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:57:20,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:57:20,349 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:57:20,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:57:20,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:57:20,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:57:20,350 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:57:20,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:57:20,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:57:20,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:57:20,353 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:57:20,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:57:20,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:57:20,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:57:20,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:57:20,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:57:20,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:57:20,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:20,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:57:20,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:57:20,355 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:57:20,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:57:20,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:57:20,357 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:57:20,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:57:20,357 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_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2023-11-21 19:57:20,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:57:20,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:57:20,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:57:20,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:57:20,719 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:57:20,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2023-11-21 19:57:23,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:57:24,238 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:57:24,239 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2023-11-21 19:57:24,257 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/3536a56fc/d2da5331ccc54564983c3b413ffdf360/FLAGf3c8a78c8 [2023-11-21 19:57:24,273 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/3536a56fc/d2da5331ccc54564983c3b413ffdf360 [2023-11-21 19:57:24,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:57:24,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:57:24,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:24,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:57:24,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:57:24,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:24" (1/1) ... [2023-11-21 19:57:24,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e49c1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:24, skipping insertion in model container [2023-11-21 19:57:24,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:24" (1/1) ... [2023-11-21 19:57:24,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:57:24,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:24,922 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) [2023-11-21 19:57:24,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e794451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:24, skipping insertion in model container [2023-11-21 19:57:24,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:24,923 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 19:57:24,925 INFO L158 Benchmark]: Toolchain (without parser) took 645.32ms. Allocated memory is still 132.1MB. Free memory was 90.4MB in the beginning and 70.4MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:57:24,925 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 132.1MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:57:24,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.83ms. Allocated memory is still 132.1MB. Free memory was 90.1MB in the beginning and 70.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:57:24,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 132.1MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.83ms. Allocated memory is still 132.1MB. Free memory was 90.1MB in the beginning and 70.4MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:57:27,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:57:27,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:57:27,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:57:27,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:57:27,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:57:27,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:57:27,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:57:27,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:57:27,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:57:27,639 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:57:27,639 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:57:27,639 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:57:27,641 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:57:27,641 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:57:27,642 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:57:27,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:57:27,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:57:27,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:57:27,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:57:27,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:57:27,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:57:27,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:57:27,646 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:57:27,647 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:57:27,647 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:57:27,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:57:27,648 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:57:27,648 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:57:27,648 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:57:27,650 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:57:27,650 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:57:27,650 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:57:27,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:57:27,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:57:27,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:57:27,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:57:27,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:27,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:57:27,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:57:27,653 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:57:27,653 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:57:27,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:57:27,654 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:57:27,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:57:27,654 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_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e63083161b3199c06a87ea66924e1f63d6865962e6a830baf344139b270d928 [2023-11-21 19:57:28,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:57:28,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:57:28,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:57:28,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:57:28,054 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:57:28,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2023-11-21 19:57:31,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:57:31,541 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:57:31,542 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-1.i [2023-11-21 19:57:31,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/da554df92/02c5d8e6b02a40aeaf0fdf586b601ebf/FLAGf1d58a4da [2023-11-21 19:57:31,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/data/da554df92/02c5d8e6b02a40aeaf0fdf586b601ebf [2023-11-21 19:57:31,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:57:31,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:57:31,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:31,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:57:31,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:57:31,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:31" (1/1) ... [2023-11-21 19:57:31,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33db3ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:31, skipping insertion in model container [2023-11-21 19:57:31,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:57:31" (1/1) ... [2023-11-21 19:57:31,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:57:32,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:32,293 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 19:57:32,342 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:57:32,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:32,484 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:57:32,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:57:32,652 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:57:32,660 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:57:32,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32 WrapperNode [2023-11-21 19:57:32,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:57:32,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:32,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:57:32,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:57:32,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,844 INFO L138 Inliner]: procedures = 180, calls = 299, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1017 [2023-11-21 19:57:32,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:57:32,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:57:32,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:57:32,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:57:32,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:32,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:33,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:57:33,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:57:33,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:57:33,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:57:33,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (1/1) ... [2023-11-21 19:57:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:57:33,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:57:33,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:57:33,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:57:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-21 19:57:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-21 19:57:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 19:57:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:57:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 19:57:33,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 19:57:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 19:57:33,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 19:57:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-21 19:57:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-21 19:57:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:57:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:57:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:57:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:57:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 19:57:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:57:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:57:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:57:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:57:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:57:33,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:57:33,392 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:57:33,396 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:57:33,443 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 19:57:38,577 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:57:38,813 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:57:38,813 INFO L308 CfgBuilder]: Removed 62 assume(true) statements. [2023-11-21 19:57:38,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:57:38 BoogieIcfgContainer [2023-11-21 19:57:38,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:57:38,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:57:38,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:57:38,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:57:38,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:57:31" (1/3) ... [2023-11-21 19:57:38,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53445012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:57:38, skipping insertion in model container [2023-11-21 19:57:38,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:57:32" (2/3) ... [2023-11-21 19:57:38,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53445012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:57:38, skipping insertion in model container [2023-11-21 19:57:38,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:57:38" (3/3) ... [2023-11-21 19:57:38,825 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-1.i [2023-11-21 19:57:38,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:57:38,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-21 19:57:38,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:57:38,918 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;@53c56ead, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:57:38,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-21 19:57:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 1000 states, 441 states have (on average 2.505668934240363) internal successors, (1105), 990 states have internal predecessors, (1105), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-21 19:57:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:57:38,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:38,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:57:38,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 60163, now seen corresponding path program 1 times [2023-11-21 19:57:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:38,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675417219] [2023-11-21 19:57:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:38,958 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 [2023-11-21 19:57:38,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:38,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:39,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:39,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:57:39,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:39,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:57:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:39,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:39,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675417219] [2023-11-21 19:57:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675417219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:39,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:57:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520588305] [2023-11-21 19:57:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:57:39,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:57:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:39,381 INFO L87 Difference]: Start difference. First operand has 1000 states, 441 states have (on average 2.505668934240363) internal successors, (1105), 990 states have internal predecessors, (1105), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:41,731 INFO L93 Difference]: Finished difference Result 1005 states and 1091 transitions. [2023-11-21 19:57:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:57:41,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 19:57:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:41,754 INFO L225 Difference]: With dead ends: 1005 [2023-11-21 19:57:41,754 INFO L226 Difference]: Without dead ends: 1004 [2023-11-21 19:57:41,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:41,760 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 881 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:41,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 705 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 19:57:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-21 19:57:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 991. [2023-11-21 19:57:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 447 states have (on average 2.3221476510067114) internal successors, (1038), 980 states have internal predecessors, (1038), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-21 19:57:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1082 transitions. [2023-11-21 19:57:41,862 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1082 transitions. Word has length 2 [2023-11-21 19:57:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:41,862 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1082 transitions. [2023-11-21 19:57:41,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1082 transitions. [2023-11-21 19:57:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:57:41,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:41,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:57:41,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:57:42,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:42,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash 60164, now seen corresponding path program 1 times [2023-11-21 19:57:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257888701] [2023-11-21 19:57:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:42,068 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 [2023-11-21 19:57:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:42,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:42,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:42,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:57:42,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:42,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:57:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:42,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:42,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:42,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257888701] [2023-11-21 19:57:42,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257888701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:57:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450632768] [2023-11-21 19:57:42,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:57:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:57:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:42,235 INFO L87 Difference]: Start difference. First operand 991 states and 1082 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:46,103 INFO L93 Difference]: Finished difference Result 1351 states and 1473 transitions. [2023-11-21 19:57:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:57:46,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 19:57:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:46,115 INFO L225 Difference]: With dead ends: 1351 [2023-11-21 19:57:46,116 INFO L226 Difference]: Without dead ends: 1351 [2023-11-21 19:57:46,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:46,119 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 388 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:46,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1340 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-21 19:57:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-11-21 19:57:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1163. [2023-11-21 19:57:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 619 states have (on average 2.3021001615508885) internal successors, (1425), 1151 states have internal predecessors, (1425), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-21 19:57:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1471 transitions. [2023-11-21 19:57:46,177 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1471 transitions. Word has length 2 [2023-11-21 19:57:46,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:46,178 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1471 transitions. [2023-11-21 19:57:46,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1471 transitions. [2023-11-21 19:57:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:57:46,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:46,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:57:46,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:57:46,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:46,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1792461925, now seen corresponding path program 1 times [2023-11-21 19:57:46,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:46,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313616520] [2023-11-21 19:57:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:46,383 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 [2023-11-21 19:57:46,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:46,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:46,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:46,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:57:46,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:46,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:57:46,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:57:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:57:46,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 19:57:46,681 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 19:57:46,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-21 19:57:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:46,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:46,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313616520] [2023-11-21 19:57:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313616520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:46,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:57:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793599954] [2023-11-21 19:57:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:46,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:57:46,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:57:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:57:46,702 INFO L87 Difference]: Start difference. First operand 1163 states and 1471 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:50,074 INFO L93 Difference]: Finished difference Result 1170 states and 1476 transitions. [2023-11-21 19:57:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:57:50,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 19:57:50,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:50,082 INFO L225 Difference]: With dead ends: 1170 [2023-11-21 19:57:50,082 INFO L226 Difference]: Without dead ends: 1170 [2023-11-21 19:57:50,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:57:50,084 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 980 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:50,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 478 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-21 19:57:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-21 19:57:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 980. [2023-11-21 19:57:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 447 states have (on average 2.295302013422819) internal successors, (1026), 969 states have internal predecessors, (1026), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-21 19:57:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1070 transitions. [2023-11-21 19:57:50,122 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1070 transitions. Word has length 5 [2023-11-21 19:57:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:50,123 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1070 transitions. [2023-11-21 19:57:50,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1070 transitions. [2023-11-21 19:57:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:57:50,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:50,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:57:50,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-21 19:57:50,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:57:50,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:50,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -268255096, now seen corresponding path program 1 times [2023-11-21 19:57:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569993545] [2023-11-21 19:57:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:50,329 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 [2023-11-21 19:57:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:50,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:50,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:50,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:57:50,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:50,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:57:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:50,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:50,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:50,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569993545] [2023-11-21 19:57:50,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569993545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:50,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:50,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:57:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852153765] [2023-11-21 19:57:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:57:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:57:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:50,494 INFO L87 Difference]: Start difference. First operand 980 states and 1070 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:53,032 INFO L93 Difference]: Finished difference Result 1275 states and 1393 transitions. [2023-11-21 19:57:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:57:53,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:57:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:53,040 INFO L225 Difference]: With dead ends: 1275 [2023-11-21 19:57:53,040 INFO L226 Difference]: Without dead ends: 1275 [2023-11-21 19:57:53,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:53,042 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 892 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:53,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1093 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-21 19:57:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-11-21 19:57:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 933. [2023-11-21 19:57:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 447 states have (on average 2.1879194630872485) internal successors, (978), 922 states have internal predecessors, (978), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-21 19:57:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1022 transitions. [2023-11-21 19:57:53,074 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1022 transitions. Word has length 6 [2023-11-21 19:57:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:53,075 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1022 transitions. [2023-11-21 19:57:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1022 transitions. [2023-11-21 19:57:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 19:57:53,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:53,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 19:57:53,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:53,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:57:53,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:53,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -268255095, now seen corresponding path program 1 times [2023-11-21 19:57:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513625009] [2023-11-21 19:57:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:53,281 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 [2023-11-21 19:57:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:53,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:53,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:57:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:53,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:57:53,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:53,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:57:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:53,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:53,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513625009] [2023-11-21 19:57:53,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513625009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:53,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:57:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315578030] [2023-11-21 19:57:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:53,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:57:53,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:53,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:57:53,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:53,483 INFO L87 Difference]: Start difference. First operand 933 states and 1022 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:57,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:57:57,154 INFO L93 Difference]: Finished difference Result 1360 states and 1483 transitions. [2023-11-21 19:57:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:57:57,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 19:57:57,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:57:57,163 INFO L225 Difference]: With dead ends: 1360 [2023-11-21 19:57:57,163 INFO L226 Difference]: Without dead ends: 1360 [2023-11-21 19:57:57,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:57:57,164 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 624 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:57:57,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1411 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-21 19:57:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-11-21 19:57:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1134. [2023-11-21 19:57:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 656 states have (on average 2.1814024390243905) internal successors, (1431), 1121 states have internal predecessors, (1431), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:57:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1479 transitions. [2023-11-21 19:57:57,198 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1479 transitions. Word has length 6 [2023-11-21 19:57:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:57:57,198 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1479 transitions. [2023-11-21 19:57:57,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:57:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1479 transitions. [2023-11-21 19:57:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:57:57,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:57:57,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:57:57,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:57:57,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:57:57,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:57:57,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:57:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1754830952, now seen corresponding path program 1 times [2023-11-21 19:57:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:57:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312305261] [2023-11-21 19:57:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:57:57,403 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 [2023-11-21 19:57:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:57:57,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:57:57,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 19:57:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:57:57,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:57:57,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:57:57,585 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:57:57,586 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:57:57,587 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 19:57:57,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-21 19:57:57,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 19:57:57,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-21 19:57:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:57:57,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:57:57,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:57:57,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312305261] [2023-11-21 19:57:57,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312305261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:57:57,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:57:57,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:57:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419256162] [2023-11-21 19:57:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:57:57,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:57:57,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:57:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:57:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:57:57,688 INFO L87 Difference]: Start difference. First operand 1134 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:00,024 INFO L93 Difference]: Finished difference Result 1600 states and 2156 transitions. [2023-11-21 19:58:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:58:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 19:58:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:00,033 INFO L225 Difference]: With dead ends: 1600 [2023-11-21 19:58:00,033 INFO L226 Difference]: Without dead ends: 1600 [2023-11-21 19:58:00,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:58:00,035 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 332 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:00,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2555 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 19:58:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-11-21 19:58:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1136. [2023-11-21 19:58:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 658 states have (on average 2.1778115501519757) internal successors, (1433), 1123 states have internal predecessors, (1433), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1481 transitions. [2023-11-21 19:58:00,072 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1481 transitions. Word has length 9 [2023-11-21 19:58:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:00,073 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1481 transitions. [2023-11-21 19:58:00,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1481 transitions. [2023-11-21 19:58:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 19:58:00,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:00,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:00,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-21 19:58:00,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:00,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:00,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash -892413857, now seen corresponding path program 1 times [2023-11-21 19:58:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749326976] [2023-11-21 19:58:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:00,279 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 [2023-11-21 19:58:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:00,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:00,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 19:58:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:00,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 19:58:00,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:00,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:00,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749326976] [2023-11-21 19:58:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749326976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:58:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089536990] [2023-11-21 19:58:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:58:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:58:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:00,494 INFO L87 Difference]: Start difference. First operand 1136 states and 1481 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:01,460 INFO L93 Difference]: Finished difference Result 1097 states and 1441 transitions. [2023-11-21 19:58:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:58:01,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 19:58:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:01,469 INFO L225 Difference]: With dead ends: 1097 [2023-11-21 19:58:01,469 INFO L226 Difference]: Without dead ends: 1097 [2023-11-21 19:58:01,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:01,470 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 69 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:01,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1633 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 19:58:01,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-11-21 19:58:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2023-11-21 19:58:01,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 643 states have (on average 2.1664074650077763) internal successors, (1393), 1084 states have internal predecessors, (1393), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1441 transitions. [2023-11-21 19:58:01,498 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1441 transitions. Word has length 14 [2023-11-21 19:58:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:01,499 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1441 transitions. [2023-11-21 19:58:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1441 transitions. [2023-11-21 19:58:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:58:01,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:01,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:01,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:58:01,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:01,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:01,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1893349730, now seen corresponding path program 1 times [2023-11-21 19:58:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:01,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881601137] [2023-11-21 19:58:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:01,705 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 [2023-11-21 19:58:01,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:01,706 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:01,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 19:58:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:01,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:58:01,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:01,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:01,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881601137] [2023-11-21 19:58:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881601137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:01,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:01,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:58:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481488382] [2023-11-21 19:58:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:58:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:58:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:58:01,933 INFO L87 Difference]: Start difference. First operand 1097 states and 1441 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:03,137 INFO L93 Difference]: Finished difference Result 1083 states and 1420 transitions. [2023-11-21 19:58:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:58:03,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 19:58:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:03,144 INFO L225 Difference]: With dead ends: 1083 [2023-11-21 19:58:03,144 INFO L226 Difference]: Without dead ends: 1083 [2023-11-21 19:58:03,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:58:03,145 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 58 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:03,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2406 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 19:58:03,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-11-21 19:58:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1082. [2023-11-21 19:58:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 642 states have (on average 2.135514018691589) internal successors, (1371), 1069 states have internal predecessors, (1371), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1419 transitions. [2023-11-21 19:58:03,172 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1419 transitions. Word has length 15 [2023-11-21 19:58:03,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:03,172 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1419 transitions. [2023-11-21 19:58:03,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:03,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1419 transitions. [2023-11-21 19:58:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:58:03,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:03,174 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] [2023-11-21 19:58:03,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-21 19:58:03,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:03,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:03,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099924, now seen corresponding path program 1 times [2023-11-21 19:58:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146638575] [2023-11-21 19:58:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:03,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:03,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:03,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 19:58:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:03,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:58:03,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:03,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 19:58:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:03,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:03,711 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:03,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146638575] [2023-11-21 19:58:03,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146638575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:03,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:03,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:58:03,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967499987] [2023-11-21 19:58:03,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:03,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:58:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:03,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:58:03,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:58:03,713 INFO L87 Difference]: Start difference. First operand 1082 states and 1419 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:06,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:06,349 INFO L93 Difference]: Finished difference Result 1092 states and 1431 transitions. [2023-11-21 19:58:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:58:06,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-21 19:58:06,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:06,355 INFO L225 Difference]: With dead ends: 1092 [2023-11-21 19:58:06,355 INFO L226 Difference]: Without dead ends: 1092 [2023-11-21 19:58:06,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:58:06,356 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 825 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:06,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 960 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 19:58:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2023-11-21 19:58:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1078. [2023-11-21 19:58:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 642 states have (on average 2.129283489096573) internal successors, (1367), 1065 states have internal predecessors, (1367), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1415 transitions. [2023-11-21 19:58:06,384 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1415 transitions. Word has length 29 [2023-11-21 19:58:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:06,385 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1415 transitions. [2023-11-21 19:58:06,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1415 transitions. [2023-11-21 19:58:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 19:58:06,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:06,386 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] [2023-11-21 19:58:06,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-21 19:58:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:06,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099923, now seen corresponding path program 1 times [2023-11-21 19:58:06,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:06,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379548361] [2023-11-21 19:58:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:06,592 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 [2023-11-21 19:58:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:06,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:06,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 19:58:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:06,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:58:06,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:06,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:58:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:07,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:07,063 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:07,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379548361] [2023-11-21 19:58:07,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379548361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:07,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:07,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:58:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563820023] [2023-11-21 19:58:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:07,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:58:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:58:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:58:07,065 INFO L87 Difference]: Start difference. First operand 1078 states and 1415 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:11,256 INFO L93 Difference]: Finished difference Result 1300 states and 1415 transitions. [2023-11-21 19:58:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:58:11,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-21 19:58:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:11,266 INFO L225 Difference]: With dead ends: 1300 [2023-11-21 19:58:11,266 INFO L226 Difference]: Without dead ends: 1300 [2023-11-21 19:58:11,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:58:11,267 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 559 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:11,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1446 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-21 19:58:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-11-21 19:58:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1074. [2023-11-21 19:58:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 642 states have (on average 2.1230529595015577) internal successors, (1363), 1061 states have internal predecessors, (1363), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1411 transitions. [2023-11-21 19:58:11,299 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1411 transitions. Word has length 29 [2023-11-21 19:58:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:11,299 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1411 transitions. [2023-11-21 19:58:11,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1411 transitions. [2023-11-21 19:58:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 19:58:11,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:11,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:11,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 19:58:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:11,506 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:11,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash 342151462, now seen corresponding path program 1 times [2023-11-21 19:58:11,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:11,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196864891] [2023-11-21 19:58:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:11,509 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 [2023-11-21 19:58:11,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:11,510 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:11,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 19:58:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:11,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:58:11,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:11,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:11,861 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196864891] [2023-11-21 19:58:11,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196864891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:11,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:11,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:58:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105736510] [2023-11-21 19:58:11,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:11,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:58:11,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:58:11,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:58:11,864 INFO L87 Difference]: Start difference. First operand 1074 states and 1411 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:13,175 INFO L93 Difference]: Finished difference Result 1068 states and 1401 transitions. [2023-11-21 19:58:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:58:13,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-21 19:58:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:13,183 INFO L225 Difference]: With dead ends: 1068 [2023-11-21 19:58:13,184 INFO L226 Difference]: Without dead ends: 1068 [2023-11-21 19:58:13,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:58:13,185 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 23 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2392 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 19:58:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-21 19:58:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2023-11-21 19:58:13,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 636 states have (on average 2.1273584905660377) internal successors, (1353), 1055 states have internal predecessors, (1353), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 19:58:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1401 transitions. [2023-11-21 19:58:13,210 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1401 transitions. Word has length 45 [2023-11-21 19:58:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:13,210 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1401 transitions. [2023-11-21 19:58:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1401 transitions. [2023-11-21 19:58:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 19:58:13,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:13,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:13,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 19:58:13,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:13,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:13,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash 950891400, now seen corresponding path program 1 times [2023-11-21 19:58:13,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:13,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880117301] [2023-11-21 19:58:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:13,427 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 [2023-11-21 19:58:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:13,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:13,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 19:58:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:13,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:58:13,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:58:14,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:58:14,073 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:58:14,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880117301] [2023-11-21 19:58:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880117301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:58:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:58:14,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:58:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93508904] [2023-11-21 19:58:14,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:58:14,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:58:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:58:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:58:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:14,076 INFO L87 Difference]: Start difference. First operand 1068 states and 1401 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:58:15,681 INFO L93 Difference]: Finished difference Result 1548 states and 2077 transitions. [2023-11-21 19:58:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:58:15,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-21 19:58:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:58:15,691 INFO L225 Difference]: With dead ends: 1548 [2023-11-21 19:58:15,692 INFO L226 Difference]: Without dead ends: 1548 [2023-11-21 19:58:15,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:58:15,693 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 371 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:58:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1669 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 19:58:15,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2023-11-21 19:58:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1372. [2023-11-21 19:58:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 938 states have (on average 2.1044776119402986) internal successors, (1974), 1357 states have internal predecessors, (1974), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 19:58:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2026 transitions. [2023-11-21 19:58:15,757 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2026 transitions. Word has length 49 [2023-11-21 19:58:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:58:15,757 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 2026 transitions. [2023-11-21 19:58:15,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:58:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2026 transitions. [2023-11-21 19:58:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 19:58:15,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:58:15,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:58:15,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-21 19:58:15,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:58:15,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-21 19:58:15,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:58:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1705949626, now seen corresponding path program 1 times [2023-11-21 19:58:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:58:15,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348754901] [2023-11-21 19:58:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:58:15,973 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 [2023-11-21 19:58:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:58:15,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -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) [2023-11-21 19:58:16,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d41ce4-457f-46ad-afa1-2f3107b573d5/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-21 19:58:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:58:16,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:58:16,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:58:16,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 19:58:16,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7