./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc 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_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:22:03,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:22:03,817 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 15:22:03,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:22:03,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:22:03,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:22:03,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:22:03,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:22:03,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:22:03,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:22:03,859 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:22:03,859 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:22:03,860 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:22:03,860 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:22:03,861 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:22:03,867 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:22:03,868 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:22:03,868 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:22:03,869 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:22:03,869 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:22:03,870 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:22:03,871 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:22:03,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:22:03,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:22:03,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:22:03,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:22:03,873 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:22:03,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:22:03,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:22:03,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:22:03,875 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:22:03,875 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:22:03,876 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:22:03,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:22:03,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:22:03,876 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:22:03,877 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:22:03,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:22:03,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:22:03,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:22:03,878 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:22:03,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:22:03,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:22:03,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:22:03,879 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:22:03,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:22:03,879 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:22:03,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:22:03,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:22:03,879 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:22:03,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:22:03,880 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_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c [2023-12-02 15:22:04,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:22:04,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:22:04,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:22:04,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:22:04,127 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:22:04,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2023-12-02 15:22:06,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:22:07,237 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:22:07,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2023-12-02 15:22:07,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/ccc8b33f1/aeff75d2c5af4dfd8ca8f038ba3051d7/FLAG5decfab2c [2023-12-02 15:22:07,268 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/ccc8b33f1/aeff75d2c5af4dfd8ca8f038ba3051d7 [2023-12-02 15:22:07,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:22:07,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:22:07,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:07,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:22:07,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:22:07,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:07" (1/1) ... [2023-12-02 15:22:07,280 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e865f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:07, skipping insertion in model container [2023-12-02 15:22:07,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:07" (1/1) ... [2023-12-02 15:22:07,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:22:07,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:07,851 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) [2023-12-02 15:22:07,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53c9b8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:07, skipping insertion in model container [2023-12-02 15:22:07,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:07,853 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:22:07,855 INFO L158 Benchmark]: Toolchain (without parser) took 582.06ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 78.4MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 15:22:07,855 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:22:07,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.78ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 78.4MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 15:22:07,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.78ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 78.4MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:22:09,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:22:09,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 15:22:09,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:22:09,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:22:09,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:22:09,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:22:09,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:22:09,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:22:09,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:22:09,824 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:22:09,824 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:22:09,825 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:22:09,826 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:22:09,826 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:22:09,827 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:22:09,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:22:09,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:22:09,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:22:09,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:22:09,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:22:09,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:22:09,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:22:09,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:22:09,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:22:09,832 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:22:09,833 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:22:09,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:22:09,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:22:09,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:22:09,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:22:09,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:22:09,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:22:09,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:22:09,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:22:09,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:22:09,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:22:09,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:22:09,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:22:09,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:22:09,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:22:09,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:22:09,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:22:09,838 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:22:09,838 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:09,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:22:09,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:22:09,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:22:09,839 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_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7b5cea41c34641368705a00e3051c009f6877551b3530b7d4fceaf386f5f58c [2023-12-02 15:22:10,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:22:10,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:22:10,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:22:10,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:22:10,149 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:22:10,150 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2023-12-02 15:22:12,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:22:13,312 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:22:13,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-1.i [2023-12-02 15:22:13,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/94c690a4e/4acf3df4dec743b3857eb5a8a77bae89/FLAG254f3bb9d [2023-12-02 15:22:13,347 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/data/94c690a4e/4acf3df4dec743b3857eb5a8a77bae89 [2023-12-02 15:22:13,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:22:13,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:22:13,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:13,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:22:13,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:22:13,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:13" (1/1) ... [2023-12-02 15:22:13,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc49d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:13, skipping insertion in model container [2023-12-02 15:22:13,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:22:13" (1/1) ... [2023-12-02 15:22:13,439 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:22:14,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:14,070 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:22:14,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:22:14,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:14,191 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:22:14,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:22:14,308 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:22:14,316 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:22:14,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14 WrapperNode [2023-12-02 15:22:14,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:22:14,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:22:14,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:22:14,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:22:14,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,425 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1406 [2023-12-02 15:22:14,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:22:14,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:22:14,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:22:14,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:22:14,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:22:14,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:22:14,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:22:14,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:22:14,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (1/1) ... [2023-12-02 15:22:14,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:22:14,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:22:14,590 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:22:14,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:22:14,632 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 15:22:14,632 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 15:22:14,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:22:14,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:22:14,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:22:14,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:22:14,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:22:14,633 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:22:14,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:22:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:22:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:22:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:22:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:22:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:22:14,851 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:22:14,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:22:28,425 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:22:28,464 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:22:28,464 INFO L309 CfgBuilder]: Removed 83 assume(true) statements. [2023-12-02 15:22:28,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:22:28 BoogieIcfgContainer [2023-12-02 15:22:28,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:22:28,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:22:28,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:22:28,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:22:28,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:22:13" (1/3) ... [2023-12-02 15:22:28,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296fcddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:22:28, skipping insertion in model container [2023-12-02 15:22:28,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:22:14" (2/3) ... [2023-12-02 15:22:28,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296fcddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:22:28, skipping insertion in model container [2023-12-02 15:22:28,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:22:28" (3/3) ... [2023-12-02 15:22:28,474 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-1.i [2023-12-02 15:22:28,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:22:28,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:22:28,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:22:28,544 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;@75cebb7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:22:28,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:22:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 15:22:28,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:22:28,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:28,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:22:28,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:28,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1302534622, now seen corresponding path program 1 times [2023-12-02 15:22:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:28,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913221590] [2023-12-02 15:22:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:28,573 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 [2023-12-02 15:22:28,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:28,577 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:28,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:28,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:22:28,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:22:28,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:28,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913221590] [2023-12-02 15:22:28,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913221590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:22:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:22:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841647863] [2023-12-02 15:22:28,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:22:28,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:22:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:22:28,859 INFO L87 Difference]: Start difference. First operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:28,906 INFO L93 Difference]: Finished difference Result 263 states and 345 transitions. [2023-12-02 15:22:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:22:28,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:22:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:28,922 INFO L225 Difference]: With dead ends: 263 [2023-12-02 15:22:28,922 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 15:22:28,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:22:28,927 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:28,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:22:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 15:22:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-02 15:22:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 245 states have (on average 1.3061224489795917) internal successors, (320), 252 states have internal predecessors, (320), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:22:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 344 transitions. [2023-12-02 15:22:28,985 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 344 transitions. Word has length 6 [2023-12-02 15:22:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:28,986 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 344 transitions. [2023-12-02 15:22:28,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 344 transitions. [2023-12-02 15:22:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:22:28,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:28,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:22:28,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:29,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:29,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1962852137, now seen corresponding path program 1 times [2023-12-02 15:22:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:29,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839879321] [2023-12-02 15:22:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:29,191 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 [2023-12-02 15:22:29,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:29,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:29,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:29,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:22:29,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:22:29,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:29,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:29,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839879321] [2023-12-02 15:22:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839879321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:29,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:22:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:22:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186982412] [2023-12-02 15:22:29,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:29,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:22:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:22:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:22:29,359 INFO L87 Difference]: Start difference. First operand 262 states and 344 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:29,610 INFO L93 Difference]: Finished difference Result 508 states and 672 transitions. [2023-12-02 15:22:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:22:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:22:29,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:29,614 INFO L225 Difference]: With dead ends: 508 [2023-12-02 15:22:29,614 INFO L226 Difference]: Without dead ends: 508 [2023-12-02 15:22:29,615 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 [2023-12-02 15:22:29,616 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 303 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:29,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 707 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:22:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-12-02 15:22:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 264. [2023-12-02 15:22:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 247 states have (on average 1.3036437246963564) internal successors, (322), 254 states have internal predecessors, (322), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:22:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2023-12-02 15:22:29,639 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 6 [2023-12-02 15:22:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:29,640 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2023-12-02 15:22:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2023-12-02 15:22:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:22:29,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:29,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:29,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:29,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -523041530, now seen corresponding path program 1 times [2023-12-02 15:22:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517613596] [2023-12-02 15:22:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:29,851 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 [2023-12-02 15:22:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:29,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:29,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:30,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:30,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:22:30,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:30,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517613596] [2023-12-02 15:22:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517613596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:22:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:22:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623079726] [2023-12-02 15:22:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:30,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:22:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:22:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:22:30,612 INFO L87 Difference]: Start difference. First operand 264 states and 346 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:30,743 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2023-12-02 15:22:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:22:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 15:22:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:30,745 INFO L225 Difference]: With dead ends: 268 [2023-12-02 15:22:30,746 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 15:22:30,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:22:30,747 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 36 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:30,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 912 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:22:30,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 15:22:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-12-02 15:22:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 250 states have (on average 1.268) internal successors, (317), 257 states have internal predecessors, (317), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:22:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 341 transitions. [2023-12-02 15:22:30,763 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 341 transitions. Word has length 151 [2023-12-02 15:22:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:30,763 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 341 transitions. [2023-12-02 15:22:30,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 341 transitions. [2023-12-02 15:22:30,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:22:30,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:30,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:30,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-02 15:22:30,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:30,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:30,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 852762490, now seen corresponding path program 1 times [2023-12-02 15:22:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037223479] [2023-12-02 15:22:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:30,976 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 [2023-12-02 15:22:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:30,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:30,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:31,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:31,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:22:31,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:31,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:31,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037223479] [2023-12-02 15:22:31,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037223479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:31,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:22:31,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:22:31,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462244747] [2023-12-02 15:22:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:31,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:22:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:22:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:22:31,925 INFO L87 Difference]: Start difference. First operand 267 states and 341 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:32,691 INFO L93 Difference]: Finished difference Result 309 states and 387 transitions. [2023-12-02 15:22:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:22:32,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 15:22:32,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:32,693 INFO L225 Difference]: With dead ends: 309 [2023-12-02 15:22:32,693 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 15:22:32,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:22:32,695 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 11 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:32,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 644 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:22:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 15:22:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-02 15:22:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 292 states have (on average 1.2431506849315068) internal successors, (363), 299 states have internal predecessors, (363), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:22:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 387 transitions. [2023-12-02 15:22:32,707 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 387 transitions. Word has length 151 [2023-12-02 15:22:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:32,707 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 387 transitions. [2023-12-02 15:22:32,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:22:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 387 transitions. [2023-12-02 15:22:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 15:22:32,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:32,711 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:32,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:22:32,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:32,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:32,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash -430394406, now seen corresponding path program 1 times [2023-12-02 15:22:32,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:32,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515495267] [2023-12-02 15:22:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:32,913 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 [2023-12-02 15:22:32,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:32,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:32,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:33,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:33,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:22:33,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:33,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515495267] [2023-12-02 15:22:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515495267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:33,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:22:33,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:22:33,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553043497] [2023-12-02 15:22:33,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:33,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:22:33,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:33,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:22:33,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:22:33,663 INFO L87 Difference]: Start difference. First operand 309 states and 387 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:22:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:33,750 INFO L93 Difference]: Finished difference Result 311 states and 391 transitions. [2023-12-02 15:22:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:22:33,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-12-02 15:22:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:33,754 INFO L225 Difference]: With dead ends: 311 [2023-12-02 15:22:33,754 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 15:22:33,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:22:33,755 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:33,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 974 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:22:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 15:22:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-02 15:22:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 293 states have (on average 1.2457337883959045) internal successors, (365), 301 states have internal predecessors, (365), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 15:22:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 391 transitions. [2023-12-02 15:22:33,767 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 391 transitions. Word has length 164 [2023-12-02 15:22:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:33,768 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 391 transitions. [2023-12-02 15:22:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:22:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 391 transitions. [2023-12-02 15:22:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 15:22:33,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:33,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:33,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 15:22:33,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:33,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:33,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:33,977 INFO L85 PathProgramCache]: Analyzing trace with hash -506725582, now seen corresponding path program 1 times [2023-12-02 15:22:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:33,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057477167] [2023-12-02 15:22:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:33,978 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 [2023-12-02 15:22:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:33,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:33,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:34,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:34,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:22:34,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:22:34,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057477167] [2023-12-02 15:22:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057477167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:34,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1824314029] [2023-12-02 15:22:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:34,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:34,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 15:22:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:35,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:22:35,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:22:35,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1824314029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:35,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:22:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293131599] [2023-12-02 15:22:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:35,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:22:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:22:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:35,699 INFO L87 Difference]: Start difference. First operand 311 states and 391 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:35,825 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2023-12-02 15:22:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:22:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 15:22:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:35,830 INFO L225 Difference]: With dead ends: 332 [2023-12-02 15:22:35,831 INFO L226 Difference]: Without dead ends: 332 [2023-12-02 15:22:35,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:35,832 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 8 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:35,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 606 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:22:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-02 15:22:35,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2023-12-02 15:22:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 313 states have (on average 1.2300319488817892) internal successors, (385), 321 states have internal predecessors, (385), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 15:22:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2023-12-02 15:22:35,843 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 166 [2023-12-02 15:22:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:35,843 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2023-12-02 15:22:35,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2023-12-02 15:22:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 15:22:35,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:35,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:35,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 15:22:36,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:36,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:36,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1415857746, now seen corresponding path program 1 times [2023-12-02 15:22:36,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:36,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188559031] [2023-12-02 15:22:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:36,248 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 [2023-12-02 15:22:36,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:36,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:36,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:36,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:36,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:22:36,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:22:37,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188559031] [2023-12-02 15:22:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188559031] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [144328924] [2023-12-02 15:22:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:37,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:37,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:37,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:22:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:37,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:37,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:22:38,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [144328924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:38,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:38,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:22:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139583750] [2023-12-02 15:22:38,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:22:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:22:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:38,251 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:39,055 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2023-12-02 15:22:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:22:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 15:22:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:39,060 INFO L225 Difference]: With dead ends: 577 [2023-12-02 15:22:39,061 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 15:22:39,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:39,062 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 235 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:39,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 769 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:22:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 15:22:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 573. [2023-12-02 15:22:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 546 states have (on average 1.2362637362637363) internal successors, (675), 559 states have internal predecessors, (675), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-12-02 15:22:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 721 transitions. [2023-12-02 15:22:39,083 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 721 transitions. Word has length 166 [2023-12-02 15:22:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:39,084 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 721 transitions. [2023-12-02 15:22:39,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 721 transitions. [2023-12-02 15:22:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-02 15:22:39,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:39,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:39,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:39,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 15:22:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:39,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:39,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1820625144, now seen corresponding path program 1 times [2023-12-02 15:22:39,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:39,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039944332] [2023-12-02 15:22:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:39,491 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 [2023-12-02 15:22:39,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:39,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:39,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:40,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:40,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:22:40,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:22:40,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039944332] [2023-12-02 15:22:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039944332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412632766] [2023-12-02 15:22:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:40,350 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:40,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:40,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:40,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 15:22:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:41,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:41,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:22:41,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:41,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1412632766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:41,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:41,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:22:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276050643] [2023-12-02 15:22:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:22:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:22:41,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:41,992 INFO L87 Difference]: Start difference. First operand 573 states and 721 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:42,455 INFO L93 Difference]: Finished difference Result 717 states and 902 transitions. [2023-12-02 15:22:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:22:42,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-12-02 15:22:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:42,465 INFO L225 Difference]: With dead ends: 717 [2023-12-02 15:22:42,465 INFO L226 Difference]: Without dead ends: 717 [2023-12-02 15:22:42,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:22:42,466 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 92 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:42,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 690 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:22:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-12-02 15:22:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 713. [2023-12-02 15:22:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 683 states have (on average 1.2386530014641288) internal successors, (846), 696 states have internal predecessors, (846), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:22:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 899 transitions. [2023-12-02 15:22:42,485 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 899 transitions. Word has length 174 [2023-12-02 15:22:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:42,485 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 899 transitions. [2023-12-02 15:22:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:22:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 899 transitions. [2023-12-02 15:22:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:22:42,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:42,488 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:42,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 15:22:42,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 15:22:42,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:42,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:42,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1040811693, now seen corresponding path program 1 times [2023-12-02 15:22:42,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:42,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315271494] [2023-12-02 15:22:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:42,890 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 [2023-12-02 15:22:42,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:42,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:42,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:43,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:43,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:22:43,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:22:43,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315271494] [2023-12-02 15:22:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315271494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [328960532] [2023-12-02 15:22:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:43,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:43,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:43,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 15:22:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:44,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:44,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 15:22:45,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:45,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [328960532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:45,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:45,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-12-02 15:22:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336835130] [2023-12-02 15:22:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:45,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:22:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:22:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:22:45,093 INFO L87 Difference]: Start difference. First operand 713 states and 899 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:22:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:45,248 INFO L93 Difference]: Finished difference Result 743 states and 914 transitions. [2023-12-02 15:22:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:22:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 15:22:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:45,253 INFO L225 Difference]: With dead ends: 743 [2023-12-02 15:22:45,254 INFO L226 Difference]: Without dead ends: 743 [2023-12-02 15:22:45,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:22:45,255 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 28 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:45,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 878 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:22:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-12-02 15:22:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2023-12-02 15:22:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 710 states have (on average 1.208450704225352) internal successors, (858), 723 states have internal predecessors, (858), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:22:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 911 transitions. [2023-12-02 15:22:45,279 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 911 transitions. Word has length 181 [2023-12-02 15:22:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:45,280 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 911 transitions. [2023-12-02 15:22:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:22:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 911 transitions. [2023-12-02 15:22:45,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:22:45,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:45,283 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:45,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 15:22:45,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 15:22:45,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:45,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:45,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1858460143, now seen corresponding path program 1 times [2023-12-02 15:22:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:45,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193478623] [2023-12-02 15:22:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:45,686 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 [2023-12-02 15:22:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:45,687 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:45,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 15:22:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:46,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:46,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:22:46,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:22:46,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193478623] [2023-12-02 15:22:46,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193478623] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:46,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753845657] [2023-12-02 15:22:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:46,705 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:46,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:46,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:46,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 15:22:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:47,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:47,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 15:22:47,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [753845657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:22:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560005504] [2023-12-02 15:22:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:47,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:22:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:22:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:22:47,819 INFO L87 Difference]: Start difference. First operand 740 states and 911 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:22:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:22:47,939 INFO L93 Difference]: Finished difference Result 692 states and 830 transitions. [2023-12-02 15:22:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:22:47,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2023-12-02 15:22:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:22:47,946 INFO L225 Difference]: With dead ends: 692 [2023-12-02 15:22:47,946 INFO L226 Difference]: Without dead ends: 692 [2023-12-02 15:22:47,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:22:47,947 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 39 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:22:47,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 852 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:22:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-02 15:22:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 689. [2023-12-02 15:22:47,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 659 states have (on average 1.1745068285280729) internal successors, (774), 672 states have internal predecessors, (774), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:22:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 827 transitions. [2023-12-02 15:22:47,970 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 827 transitions. Word has length 181 [2023-12-02 15:22:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:22:47,970 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 827 transitions. [2023-12-02 15:22:47,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:22:47,970 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 827 transitions. [2023-12-02 15:22:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:22:47,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:22:47,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:22:47,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 15:22:48,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 15:22:48,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:22:48,373 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:22:48,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:22:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1926848735, now seen corresponding path program 1 times [2023-12-02 15:22:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:22:48,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369940626] [2023-12-02 15:22:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:48,374 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 [2023-12-02 15:22:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:22:48,375 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:22:48,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 15:22:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:49,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:22:49,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:22:49,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:22:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:22:49,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:22:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369940626] [2023-12-02 15:22:49,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369940626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:22:49,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536585888] [2023-12-02 15:22:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:22:49,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:22:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:22:49,371 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:22:49,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 15:22:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:22:50,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:22:50,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:22:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:22:50,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:22:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536585888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:22:50,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:22:50,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:22:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212487326] [2023-12-02 15:22:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:22:50,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:22:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:22:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:22:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:22:50,710 INFO L87 Difference]: Start difference. First operand 689 states and 827 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:22:53,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:22:55,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:22:59,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:23:01,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:23:04,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:23:06,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:23:09,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:23:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:09,150 INFO L93 Difference]: Finished difference Result 626 states and 743 transitions. [2023-12-02 15:23:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:23:09,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 15:23:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:09,155 INFO L225 Difference]: With dead ends: 626 [2023-12-02 15:23:09,155 INFO L226 Difference]: Without dead ends: 626 [2023-12-02 15:23:09,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:23:09,156 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 399 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:09,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 516 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 124 Invalid, 5 Unknown, 0 Unchecked, 18.4s Time] [2023-12-02 15:23:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-02 15:23:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 409. [2023-12-02 15:23:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 388 states have (on average 1.1675257731958764) internal successors, (453), 396 states have internal predecessors, (453), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 15:23:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 486 transitions. [2023-12-02 15:23:09,169 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 486 transitions. Word has length 181 [2023-12-02 15:23:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:09,170 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 486 transitions. [2023-12-02 15:23:09,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:23:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 486 transitions. [2023-12-02 15:23:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 15:23:09,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:09,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:09,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 15:23:09,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:09,574 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:23:09,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash -166179989, now seen corresponding path program 1 times [2023-12-02 15:23:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398891695] [2023-12-02 15:23:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:09,576 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 [2023-12-02 15:23:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:09,578 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:23:09,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 15:23:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:10,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:23:10,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:10,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:23:10,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:23:10,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398891695] [2023-12-02 15:23:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398891695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:10,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1011346819] [2023-12-02 15:23:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:10,780 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:10,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:23:10,781 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:23:10,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 15:23:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:12,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:23:12,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 15:23:12,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1011346819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:23:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:23:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153449403] [2023-12-02 15:23:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:12,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:23:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:23:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:23:12,217 INFO L87 Difference]: Start difference. First operand 409 states and 486 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:23:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:12,329 INFO L93 Difference]: Finished difference Result 397 states and 467 transitions. [2023-12-02 15:23:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:23:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2023-12-02 15:23:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:12,333 INFO L225 Difference]: With dead ends: 397 [2023-12-02 15:23:12,333 INFO L226 Difference]: Without dead ends: 397 [2023-12-02 15:23:12,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:23:12,335 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 32 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:12,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 838 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:23:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-02 15:23:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-12-02 15:23:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 376 states have (on average 1.1542553191489362) internal successors, (434), 384 states have internal predecessors, (434), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 15:23:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 467 transitions. [2023-12-02 15:23:12,349 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 467 transitions. Word has length 189 [2023-12-02 15:23:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:12,350 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 467 transitions. [2023-12-02 15:23:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:23:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 467 transitions. [2023-12-02 15:23:12,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 15:23:12,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:12,352 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:12,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 15:23:12,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 15:23:12,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:23:12,753 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:23:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1857756189, now seen corresponding path program 1 times [2023-12-02 15:23:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594890973] [2023-12-02 15:23:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:12,754 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 [2023-12-02 15:23:12,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:12,755 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:23:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 15:23:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:13,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:23:13,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:23:13,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:23:13,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594890973] [2023-12-02 15:23:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594890973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:13,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1134224351] [2023-12-02 15:23:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:13,704 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:23:13,705 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:23:13,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 15:23:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:15,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:23:15,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:23:15,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:23:15,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1134224351] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:15,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589386876] [2023-12-02 15:23:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:15,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:15,430 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:15,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:23:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:16,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:23:16,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:23:16,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:23:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589386876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:17,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:23:17,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-12-02 15:23:17,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560767499] [2023-12-02 15:23:17,429 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:23:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:23:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:23:17,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:23:17,431 INFO L87 Difference]: Start difference. First operand 397 states and 467 transitions. Second operand has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:23:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:18,962 INFO L93 Difference]: Finished difference Result 924 states and 1116 transitions. [2023-12-02 15:23:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:23:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 189 [2023-12-02 15:23:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:18,968 INFO L225 Difference]: With dead ends: 924 [2023-12-02 15:23:18,968 INFO L226 Difference]: Without dead ends: 924 [2023-12-02 15:23:18,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:23:18,969 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1241 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:18,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2375 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 15:23:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-12-02 15:23:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 854. [2023-12-02 15:23:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 818 states have (on average 1.1687041564792175) internal successors, (956), 831 states have internal predecessors, (956), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 15:23:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1022 transitions. [2023-12-02 15:23:18,999 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1022 transitions. Word has length 189 [2023-12-02 15:23:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:19,000 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1022 transitions. [2023-12-02 15:23:19,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:23:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1022 transitions. [2023-12-02 15:23:19,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 15:23:19,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:19,007 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:19,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 15:23:19,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:23:19,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 15:23:19,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:23:19,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:23:19,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1935184991, now seen corresponding path program 1 times [2023-12-02 15:23:19,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:19,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708037979] [2023-12-02 15:23:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:19,611 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 [2023-12-02 15:23:19,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:19,612 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:23:19,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 15:23:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:21,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:23:21,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 15:23:22,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 15:23:22,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708037979] [2023-12-02 15:23:22,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708037979] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36514603] [2023-12-02 15:23:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:22,328 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:22,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:23:22,329 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:23:22,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 15:23:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:26,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:23:26,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 15:23:26,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 15:23:26,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36514603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:26,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498254318] [2023-12-02 15:23:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:26,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:26,744 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:26,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:23:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:29,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:23:29,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-12-02 15:23:29,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 128 proven. 29 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-02 15:23:29,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498254318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:29,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:23:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-12-02 15:23:29,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391324150] [2023-12-02 15:23:29,674 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:23:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:23:29,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:23:29,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:23:29,679 INFO L87 Difference]: Start difference. First operand 854 states and 1022 transitions. Second operand has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:23:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:31,242 INFO L93 Difference]: Finished difference Result 873 states and 1078 transitions. [2023-12-02 15:23:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 15:23:31,243 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 515 [2023-12-02 15:23:31,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:31,248 INFO L225 Difference]: With dead ends: 873 [2023-12-02 15:23:31,248 INFO L226 Difference]: Without dead ends: 870 [2023-12-02 15:23:31,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3109 GetRequests, 3066 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 15:23:31,250 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 33 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:31,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2907 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:23:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-02 15:23:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 866. [2023-12-02 15:23:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 830 states have (on average 1.1710843373493975) internal successors, (972), 843 states have internal predecessors, (972), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 15:23:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1038 transitions. [2023-12-02 15:23:31,275 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1038 transitions. Word has length 515 [2023-12-02 15:23:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:31,275 INFO L495 AbstractCegarLoop]: Abstraction has 866 states and 1038 transitions. [2023-12-02 15:23:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:23:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1038 transitions. [2023-12-02 15:23:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-12-02 15:23:31,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:31,281 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:31,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:31,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:31,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:23:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:31,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:23:31,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash -180268577, now seen corresponding path program 2 times [2023-12-02 15:23:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:23:31,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275563580] [2023-12-02 15:23:31,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:23:31,884 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 [2023-12-02 15:23:31,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:23:31,885 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:23:31,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 15:23:34,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:23:34,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:34,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:23:34,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 15:23:34,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 15:23:35,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:23:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275563580] [2023-12-02 15:23:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275563580] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537004782] [2023-12-02 15:23:35,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:23:35,532 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:23:35,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:23:35,533 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:23:35,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 15:23:40,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:23:40,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:40,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:23:40,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 15:23:40,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 15:23:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537004782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173299714] [2023-12-02 15:23:41,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:23:41,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:41,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:41,147 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:41,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 15:23:43,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:23:43,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:23:43,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:23:43,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 15:23:44,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 15:23:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173299714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:46,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:23:46,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-12-02 15:23:46,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998567705] [2023-12-02 15:23:46,902 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:23:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 15:23:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:23:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 15:23:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 15:23:46,908 INFO L87 Difference]: Start difference. First operand 866 states and 1038 transitions. Second operand has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:24:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:03,712 INFO L93 Difference]: Finished difference Result 2194 states and 2810 transitions. [2023-12-02 15:24:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 15:24:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 539 [2023-12-02 15:24:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:03,723 INFO L225 Difference]: With dead ends: 2194 [2023-12-02 15:24:03,723 INFO L226 Difference]: Without dead ends: 2192 [2023-12-02 15:24:03,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3267 GetRequests, 3198 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 15:24:03,726 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 4553 mSDsluCounter, 18914 mSDsCounter, 0 mSdLazyCounter, 3086 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 20112 SdHoareTripleChecker+Invalid, 3996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 3086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:03,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4715 Valid, 20112 Invalid, 3996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [910 Valid, 3086 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-12-02 15:24:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2023-12-02 15:24:03,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2111. [2023-12-02 15:24:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2036 states have (on average 1.1655206286836934) internal successors, (2373), 2064 states have internal predecessors, (2373), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (87), 47 states have call predecessors, (87), 67 states have call successors, (87) [2023-12-02 15:24:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2529 transitions. [2023-12-02 15:24:03,774 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2529 transitions. Word has length 539 [2023-12-02 15:24:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:03,774 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 2529 transitions. [2023-12-02 15:24:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:24:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2529 transitions. [2023-12-02 15:24:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-02 15:24:03,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:03,789 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:03,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 15:24:04,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 15:24:04,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-12-02 15:24:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:24:04,391 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:24:04,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1959245525, now seen corresponding path program 3 times [2023-12-02 15:24:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:24:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102837287] [2023-12-02 15:24:04,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:24:04,396 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 [2023-12-02 15:24:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:24:04,397 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 15:24:04,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6669d51-1bc1-4fcb-a95b-203bd5c319ca/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process