./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91 --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:03,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:03,884 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-24 23:54:03,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:03,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:03,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:03,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:03,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:03,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:03,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:03,953 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:03,953 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:03,954 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:03,955 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:03,956 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:03,956 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:03,957 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:03,957 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:03,958 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:03,958 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:03,959 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:03,959 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:03,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:54:03,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:54:03,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:03,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:03,962 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:03,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:03,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:03,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:03,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:03,965 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:54:03,966 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:54:03,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:03,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:03,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:54:03,967 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:03,967 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:03,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:03,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:03,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:03,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:03,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:03,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:03,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:03,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:03,970 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:03,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:03,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:03,971 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:03,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:03,971 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_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2023-11-24 23:54:04,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:04,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:04,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:04,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:04,299 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:04,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2023-11-24 23:54:07,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:07,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:07,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2023-11-24 23:54:07,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/968c583bb/d9d6736779a145a7ab04efd90b439dad/FLAG5bc4f2cfe [2023-11-24 23:54:07,801 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/968c583bb/d9d6736779a145a7ab04efd90b439dad [2023-11-24 23:54:07,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:07,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:07,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:07,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:07,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:07,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:07" (1/1) ... [2023-11-24 23:54:07,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b558fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:07, skipping insertion in model container [2023-11-24 23:54:07,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:07" (1/1) ... [2023-11-24 23:54:07,931 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:08,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:08,734 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 23:54:08,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62a6ff5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:08, skipping insertion in model container [2023-11-24 23:54:08,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:08,735 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:54:08,737 INFO L158 Benchmark]: Toolchain (without parser) took 926.61ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 71.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:08,738 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 61.3MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:54:08,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 920.87ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 71.2MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 23:54:08,740 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 61.3MB in the end (delta: 158.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 920.87ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 71.2MB in the end (delta: 22.5MB). 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_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91 --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:11,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:11,420 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-24 23:54:11,429 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:11,430 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:11,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:11,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:11,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:11,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:11,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:11,472 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:11,473 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:11,473 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:11,475 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:11,475 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:11,475 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:11,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:54:11,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:54:11,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:11,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:11,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:11,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:11,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:11,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:11,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:11,481 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:54:11,481 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:54:11,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:11,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:11,482 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:54:11,484 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:54:11,484 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:54:11,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:11,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:11,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:11,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:11,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:11,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:54:11,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:11,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:11,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:11,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:11,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:11,487 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:54:11,488 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:11,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:11,488 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:11,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:11,489 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_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2023-11-24 23:54:11,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:54:11,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:54:11,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:54:11,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:54:11,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:54:11,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2023-11-24 23:54:15,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:54:15,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:54:15,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2023-11-24 23:54:15,558 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/511242132/9aa857a7706a45b7b0e1f0b1b3942154/FLAGe09490e51 [2023-11-24 23:54:15,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/data/511242132/9aa857a7706a45b7b0e1f0b1b3942154 [2023-11-24 23:54:15,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:54:15,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:54:15,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:15,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:54:15,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:54:15,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:15" (1/1) ... [2023-11-24 23:54:15,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c90daa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:15, skipping insertion in model container [2023-11-24 23:54:15,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:54:15" (1/1) ... [2023-11-24 23:54:15,693 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:16,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:16,342 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:54:16,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:54:16,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:16,469 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:54:16,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:54:16,685 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:54:16,693 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:54:16,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16 WrapperNode [2023-11-24 23:54:16,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:54:16,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:16,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:54:16,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:54:16,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:16,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:16,868 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1406 [2023-11-24 23:54:16,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:54:16,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:54:16,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:54:16,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:54:16,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:16,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:16,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:16,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:54:17,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:54:17,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:54:17,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:54:17,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (1/1) ... [2023-11-24 23:54:17,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:17,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:54:17,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:54:17,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:54:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:54:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:54:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:54:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:54:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:54:17,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:54:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:54:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:54:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:54:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:54:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:54:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:54:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:54:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:54:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:54:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:54:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:54:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:54:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:54:17,430 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:54:17,432 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:54:31,805 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:54:31,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:54:31,875 INFO L309 CfgBuilder]: Removed 83 assume(true) statements. [2023-11-24 23:54:31,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:31 BoogieIcfgContainer [2023-11-24 23:54:31,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:54:31,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:54:31,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:54:31,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:54:31,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:54:15" (1/3) ... [2023-11-24 23:54:31,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:31, skipping insertion in model container [2023-11-24 23:54:31,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:54:16" (2/3) ... [2023-11-24 23:54:31,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:54:31, skipping insertion in model container [2023-11-24 23:54:31,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:54:31" (3/3) ... [2023-11-24 23:54:31,890 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2023-11-24 23:54:31,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:54:31,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:54:31,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:54:32,005 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;@34c14d8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:54:32,005 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:54:32,013 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) [2023-11-24 23:54:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:54:32,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:32,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:54:32,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:32,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1302534622, now seen corresponding path program 1 times [2023-11-24 23:54:32,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014097657] [2023-11-24 23:54:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:32,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:32,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:54:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:32,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:54:32,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:32,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:32,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014097657] [2023-11-24 23:54:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014097657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:32,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:32,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:32,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848669899] [2023-11-24 23:54:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:32,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:54:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:54:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:54:32,354 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) [2023-11-24 23:54:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:32,455 INFO L93 Difference]: Finished difference Result 263 states and 345 transitions. [2023-11-24 23:54:32,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:54:32,458 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 [2023-11-24 23:54:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:32,470 INFO L225 Difference]: With dead ends: 263 [2023-11-24 23:54:32,471 INFO L226 Difference]: Without dead ends: 262 [2023-11-24 23:54:32,472 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 [2023-11-24 23:54:32,476 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 [2023-11-24 23:54:32,477 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] [2023-11-24 23:54:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-24 23:54:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-24 23:54:32,531 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) [2023-11-24 23:54:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 344 transitions. [2023-11-24 23:54:32,537 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 344 transitions. Word has length 6 [2023-11-24 23:54:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:32,537 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 344 transitions. [2023-11-24 23:54:32,538 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) [2023-11-24 23:54:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 344 transitions. [2023-11-24 23:54:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:54:32,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:32,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:54:32,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:32,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:32,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:32,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1962852137, now seen corresponding path program 1 times [2023-11-24 23:54:32,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57891360] [2023-11-24 23:54:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:32,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:32,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:32,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 23:54:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:32,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:54:32,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:32,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:32,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57891360] [2023-11-24 23:54:32,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57891360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:32,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:32,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:32,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155922256] [2023-11-24 23:54:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:54:32,963 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) [2023-11-24 23:54:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:33,470 INFO L93 Difference]: Finished difference Result 508 states and 672 transitions. [2023-11-24 23:54:33,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:33,479 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 [2023-11-24 23:54:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:33,483 INFO L225 Difference]: With dead ends: 508 [2023-11-24 23:54:33,483 INFO L226 Difference]: Without dead ends: 508 [2023-11-24 23:54:33,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:54:33,485 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 303 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:33,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 707 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:54:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-24 23:54:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 264. [2023-11-24 23:54:33,521 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) [2023-11-24 23:54:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2023-11-24 23:54:33,523 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 6 [2023-11-24 23:54:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:33,523 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2023-11-24 23:54:33,524 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) [2023-11-24 23:54:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2023-11-24 23:54:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 23:54:33,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:33,537 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] [2023-11-24 23:54:33,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:33,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:33,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:33,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -523041530, now seen corresponding path program 1 times [2023-11-24 23:54:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636928173] [2023-11-24 23:54:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:33,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:33,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 23:54:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:34,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:34,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:34,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:34,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636928173] [2023-11-24 23:54:34,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636928173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:34,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:34,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120985403] [2023-11-24 23:54:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:34,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:34,570 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) [2023-11-24 23:54:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:34,724 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2023-11-24 23:54:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:34,725 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 [2023-11-24 23:54:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:34,727 INFO L225 Difference]: With dead ends: 268 [2023-11-24 23:54:34,727 INFO L226 Difference]: Without dead ends: 268 [2023-11-24 23:54:34,728 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 [2023-11-24 23:54:34,729 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 [2023-11-24 23:54:34,730 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] [2023-11-24 23:54:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-24 23:54:34,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-11-24 23:54:34,743 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) [2023-11-24 23:54:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 341 transitions. [2023-11-24 23:54:34,745 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 341 transitions. Word has length 151 [2023-11-24 23:54:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:34,746 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 341 transitions. [2023-11-24 23:54:34,746 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) [2023-11-24 23:54:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 341 transitions. [2023-11-24 23:54:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 23:54:34,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:34,766 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] [2023-11-24 23:54:34,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:34,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:34,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash 852762490, now seen corresponding path program 1 times [2023-11-24 23:54:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645042614] [2023-11-24 23:54:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:34,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:34,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 23:54:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:35,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:35,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:36,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:36,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645042614] [2023-11-24 23:54:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645042614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:36,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:54:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251612255] [2023-11-24 23:54:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:36,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:36,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:36,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:54:36,030 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) [2023-11-24 23:54:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:36,876 INFO L93 Difference]: Finished difference Result 309 states and 387 transitions. [2023-11-24 23:54:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:36,876 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 [2023-11-24 23:54:36,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:36,878 INFO L225 Difference]: With dead ends: 309 [2023-11-24 23:54:36,878 INFO L226 Difference]: Without dead ends: 309 [2023-11-24 23:54:36,878 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 [2023-11-24 23:54:36,880 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 11 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2023-11-24 23:54:36,880 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] [2023-11-24 23:54:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-24 23:54:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-11-24 23:54:36,890 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) [2023-11-24 23:54:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 387 transitions. [2023-11-24 23:54:36,893 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 387 transitions. Word has length 151 [2023-11-24 23:54:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:36,894 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 387 transitions. [2023-11-24 23:54:36,894 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) [2023-11-24 23:54:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 387 transitions. [2023-11-24 23:54:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-24 23:54:36,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:36,899 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] [2023-11-24 23:54:36,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:37,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:37,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:37,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash -430394406, now seen corresponding path program 1 times [2023-11-24 23:54:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:37,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808050789] [2023-11-24 23:54:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:37,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:37,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:37,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:37,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 23:54:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:38,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:38,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:54:38,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:38,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:38,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808050789] [2023-11-24 23:54:38,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808050789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:38,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:54:38,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:54:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381440717] [2023-11-24 23:54:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:54:38,121 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) [2023-11-24 23:54:38,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:38,225 INFO L93 Difference]: Finished difference Result 311 states and 391 transitions. [2023-11-24 23:54:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:38,226 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 [2023-11-24 23:54:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:38,228 INFO L225 Difference]: With dead ends: 311 [2023-11-24 23:54:38,229 INFO L226 Difference]: Without dead ends: 311 [2023-11-24 23:54:38,229 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 [2023-11-24 23:54:38,230 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 [2023-11-24 23:54:38,230 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] [2023-11-24 23:54:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-24 23:54:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-11-24 23:54:38,255 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) [2023-11-24 23:54:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 391 transitions. [2023-11-24 23:54:38,259 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 391 transitions. Word has length 164 [2023-11-24 23:54:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:38,260 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 391 transitions. [2023-11-24 23:54:38,260 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) [2023-11-24 23:54:38,261 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 391 transitions. [2023-11-24 23:54:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-24 23:54:38,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:38,265 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] [2023-11-24 23:54:38,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:38,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:38,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:38,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash -506725582, now seen corresponding path program 1 times [2023-11-24 23:54:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:38,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794532980] [2023-11-24 23:54:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:38,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:38,482 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:38,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 23:54:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:39,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:39,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:39,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:39,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794532980] [2023-11-24 23:54:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794532980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909839828] [2023-11-24 23:54:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:54:39,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:54:39,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-24 23:54:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:40,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:54:40,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:54:40,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:40,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [909839828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:40,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:40,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-24 23:54:40,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728913646] [2023-11-24 23:54:40,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:40,606 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) [2023-11-24 23:54:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:40,749 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2023-11-24 23:54:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:40,750 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 [2023-11-24 23:54:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:40,756 INFO L225 Difference]: With dead ends: 332 [2023-11-24 23:54:40,756 INFO L226 Difference]: Without dead ends: 332 [2023-11-24 23:54:40,757 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 [2023-11-24 23:54:40,759 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 [2023-11-24 23:54:40,760 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] [2023-11-24 23:54:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-24 23:54:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2023-11-24 23:54:40,776 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) [2023-11-24 23:54:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2023-11-24 23:54:40,778 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 166 [2023-11-24 23:54:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:40,779 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2023-11-24 23:54:40,780 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) [2023-11-24 23:54:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2023-11-24 23:54:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-24 23:54:40,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:40,783 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] [2023-11-24 23:54:40,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:40,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:41,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:41,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:41,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1415857746, now seen corresponding path program 1 times [2023-11-24 23:54:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433346156] [2023-11-24 23:54:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:41,191 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:41,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 23:54:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:42,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:42,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:42,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:42,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433346156] [2023-11-24 23:54:42,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433346156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [21474545] [2023-11-24 23:54:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:42,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:42,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:54:42,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:54:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-24 23:54:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:43,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:43,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:54:43,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [21474545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:43,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:43,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-24 23:54:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194225353] [2023-11-24 23:54:43,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:43,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:43,770 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) [2023-11-24 23:54:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:45,111 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2023-11-24 23:54:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:45,113 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 [2023-11-24 23:54:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:45,117 INFO L225 Difference]: With dead ends: 577 [2023-11-24 23:54:45,117 INFO L226 Difference]: Without dead ends: 577 [2023-11-24 23:54:45,118 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 [2023-11-24 23:54:45,118 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 235 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:45,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 769 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:54:45,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-24 23:54:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 573. [2023-11-24 23:54:45,144 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) [2023-11-24 23:54:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 721 transitions. [2023-11-24 23:54:45,149 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 721 transitions. Word has length 166 [2023-11-24 23:54:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:45,150 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 721 transitions. [2023-11-24 23:54:45,150 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) [2023-11-24 23:54:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 721 transitions. [2023-11-24 23:54:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-24 23:54:45,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:45,155 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] [2023-11-24 23:54:45,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:45,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:45,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:45,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1820625144, now seen corresponding path program 1 times [2023-11-24 23:54:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893905024] [2023-11-24 23:54:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:45,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:45,564 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:45,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 23:54:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:46,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:46,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:54:46,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:54:46,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893905024] [2023-11-24 23:54:46,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893905024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:46,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1028839252] [2023-11-24 23:54:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:46,682 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:54:46,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:54:46,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-24 23:54:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:47,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:54:47,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-24 23:54:48,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1028839252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:48,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:48,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-24 23:54:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811324321] [2023-11-24 23:54:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:54:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:54:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:54:48,892 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) [2023-11-24 23:54:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:50,179 INFO L93 Difference]: Finished difference Result 717 states and 902 transitions. [2023-11-24 23:54:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:54:50,187 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 [2023-11-24 23:54:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:50,192 INFO L225 Difference]: With dead ends: 717 [2023-11-24 23:54:50,194 INFO L226 Difference]: Without dead ends: 717 [2023-11-24 23:54:50,194 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 [2023-11-24 23:54:50,196 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 92 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:50,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 690 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:54:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-24 23:54:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 713. [2023-11-24 23:54:50,228 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) [2023-11-24 23:54:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 899 transitions. [2023-11-24 23:54:50,234 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 899 transitions. Word has length 174 [2023-11-24 23:54:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:50,236 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 899 transitions. [2023-11-24 23:54:50,236 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) [2023-11-24 23:54:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 899 transitions. [2023-11-24 23:54:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-24 23:54:50,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:50,239 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] [2023-11-24 23:54:50,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:50,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:50,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:50,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:50,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1040811693, now seen corresponding path program 1 times [2023-11-24 23:54:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863071111] [2023-11-24 23:54:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:50,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-24 23:54:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:51,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:51,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:54:51,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:54:51,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:51,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863071111] [2023-11-24 23:54:51,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863071111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:51,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240995603] [2023-11-24 23:54:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:51,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:51,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:54:51,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:54:51,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-24 23:54:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:53,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:53,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-24 23:54:53,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1240995603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:53,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-24 23:54:53,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106777875] [2023-11-24 23:54:53,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:53,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:54:53,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:54:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:54:53,286 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) [2023-11-24 23:54:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:53,486 INFO L93 Difference]: Finished difference Result 743 states and 914 transitions. [2023-11-24 23:54:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:53,486 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 [2023-11-24 23:54:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:53,491 INFO L225 Difference]: With dead ends: 743 [2023-11-24 23:54:53,492 INFO L226 Difference]: Without dead ends: 743 [2023-11-24 23:54:53,492 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 [2023-11-24 23:54:53,494 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:54:53,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 878 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:54:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-11-24 23:54:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2023-11-24 23:54:53,517 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) [2023-11-24 23:54:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 911 transitions. [2023-11-24 23:54:53,521 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 911 transitions. Word has length 181 [2023-11-24 23:54:53,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:53,522 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 911 transitions. [2023-11-24 23:54:53,522 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) [2023-11-24 23:54:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 911 transitions. [2023-11-24 23:54:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-24 23:54:53,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:53,527 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] [2023-11-24 23:54:53,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:53,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:53,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:53,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:53,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1858460143, now seen corresponding path program 1 times [2023-11-24 23:54:53,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:53,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852321764] [2023-11-24 23:54:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:53,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:53,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-24 23:54:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:55,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:55,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:54:55,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:54:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:54:55,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:54:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852321764] [2023-11-24 23:54:55,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852321764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:54:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1633754784] [2023-11-24 23:54:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:55,207 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:55,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:54:55,208 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:54:55,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-11-24 23:54:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:56,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:56,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:54:56,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:54:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1633754784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:54:56,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:54:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-24 23:54:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172186830] [2023-11-24 23:54:56,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:54:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:54:56,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:54:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:54:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:54:56,662 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) [2023-11-24 23:54:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:54:56,824 INFO L93 Difference]: Finished difference Result 692 states and 830 transitions. [2023-11-24 23:54:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:54:56,824 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 [2023-11-24 23:54:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:54:56,829 INFO L225 Difference]: With dead ends: 692 [2023-11-24 23:54:56,829 INFO L226 Difference]: Without dead ends: 692 [2023-11-24 23:54:56,829 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 [2023-11-24 23:54:56,830 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 [2023-11-24 23:54:56,831 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] [2023-11-24 23:54:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-11-24 23:54:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 689. [2023-11-24 23:54:56,849 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) [2023-11-24 23:54:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 827 transitions. [2023-11-24 23:54:56,853 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 827 transitions. Word has length 181 [2023-11-24 23:54:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:54:56,853 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 827 transitions. [2023-11-24 23:54:56,854 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) [2023-11-24 23:54:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 827 transitions. [2023-11-24 23:54:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-24 23:54:56,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:54:56,857 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] [2023-11-24 23:54:56,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:54:57,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-11-24 23:54:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:54:57,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:54:57,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:54:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1926848735, now seen corresponding path program 1 times [2023-11-24 23:54:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:54:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399663942] [2023-11-24 23:54:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:54:57,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:54:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:54:57,274 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:54:57,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d19d4170-84b4-41ce-abab-22b60216ab2b/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-24 23:54:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:54:58,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:54:58,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:54:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:54:58,388 INFO L327 TraceCheckSpWp]: Computing backward predicates...