./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.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_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:40:53,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:40:53,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 15:40:53,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:40:53,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:40:53,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:40:53,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:40:53,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:40:53,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:40:53,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:40:53,717 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:40:53,717 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:40:53,718 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:40:53,718 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:40:53,719 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:40:53,719 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:40:53,720 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:40:53,720 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:40:53,721 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:40:53,721 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:40:53,722 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:40:53,724 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:40:53,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:40:53,725 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:40:53,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:40:53,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:40:53,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:40:53,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:40:53,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:40:53,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:40:53,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:40:53,728 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:40:53,728 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:40:53,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:40:53,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:40:53,729 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:40:53,729 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:40:53,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:40:53,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:40:53,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:40:53,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:40:53,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:40:53,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:40:53,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:40:53,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:40:53,732 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:40:53,733 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_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2023-12-02 15:40:53,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:40:53,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:40:53,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:40:53,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:40:53,992 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:40:53,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2023-12-02 15:40:56,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:40:56,983 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:40:56,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2023-12-02 15:40:57,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/47e29f2a0/ab5581b386d643cd9c518f0747f67d25/FLAG9724e175b [2023-12-02 15:40:57,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/47e29f2a0/ab5581b386d643cd9c518f0747f67d25 [2023-12-02 15:40:57,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:40:57,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:40:57,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:40:57,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:40:57,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:40:57,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:57" (1/1) ... [2023-12-02 15:40:57,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3439ecc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:57, skipping insertion in model container [2023-12-02 15:40:57,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:40:57" (1/1) ... [2023-12-02 15:40:57,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:40:57,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:40:57,571 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-12-02 15:40:57,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3166af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:40:57, skipping insertion in model container [2023-12-02 15:40:57,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:40:57,572 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 15:40:57,573 INFO L158 Benchmark]: Toolchain (without parser) took 554.83ms. Allocated memory is still 144.7MB. Free memory was 101.1MB in the beginning and 111.0MB in the end (delta: -9.9MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-12-02 15:40:57,574 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 82.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:40:57,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.11ms. Allocated memory is still 144.7MB. Free memory was 101.1MB in the beginning and 111.0MB in the end (delta: -9.9MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-12-02 15:40:57,575 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 82.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.11ms. Allocated memory is still 144.7MB. Free memory was 101.1MB in the beginning and 111.0MB in the end (delta: -9.9MB). Peak memory consumption was 30.7MB. 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_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:40:59,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:40:59,376 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 15:40:59,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:40:59,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:40:59,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:40:59,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:40:59,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:40:59,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:40:59,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:40:59,414 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:40:59,414 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:40:59,415 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:40:59,416 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:40:59,416 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:40:59,417 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:40:59,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:40:59,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:40:59,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:40:59,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:40:59,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:40:59,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:40:59,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:40:59,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:40:59,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:40:59,422 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:40:59,423 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:40:59,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:40:59,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:40:59,424 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:40:59,424 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:40:59,425 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:40:59,425 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:40:59,425 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:40:59,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:40:59,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:40:59,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:40:59,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:40:59,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:40:59,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:40:59,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:40:59,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:40:59,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:40:59,428 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:40:59,428 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:40:59,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:40:59,428 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:40:59,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:40:59,429 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_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2023-12-02 15:40:59,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:40:59,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:40:59,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:40:59,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:40:59,715 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:40:59,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2023-12-02 15:41:02,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:41:02,783 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:41:02,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2023-12-02 15:41:02,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/89184d035/6a3854718cdf43e4a0d2f89dd0907fea/FLAG167939258 [2023-12-02 15:41:02,817 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/data/89184d035/6a3854718cdf43e4a0d2f89dd0907fea [2023-12-02 15:41:02,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:41:02,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:41:02,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:41:02,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:41:02,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:41:02,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:41:02" (1/1) ... [2023-12-02 15:41:02,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bb67571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:02, skipping insertion in model container [2023-12-02 15:41:02,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:41:02" (1/1) ... [2023-12-02 15:41:02,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:41:03,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:41:03,511 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 15:41:03,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:41:03,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:41:03,612 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:41:03,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:41:03,728 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:41:03,734 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:41:03,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03 WrapperNode [2023-12-02 15:41:03,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:41:03,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:41:03,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:41:03,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:41:03,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,856 INFO L138 Inliner]: procedures = 180, calls = 489, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1705 [2023-12-02 15:41:03,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:41:03,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:41:03,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:41:03,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:41:03,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,971 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:41:03,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:41:03,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:41:03,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:41:03,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (1/1) ... [2023-12-02 15:41:03,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:41:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:04,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:41:04,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:41:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 15:41:04,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 15:41:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 15:41:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:41:04,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:41:04,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:41:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:41:04,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:41:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:41:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:41:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:41:04,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:41:04,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:41:04,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:41:04,306 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:41:04,309 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:41:15,756 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:41:15,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:41:15,793 INFO L309 CfgBuilder]: Removed 100 assume(true) statements. [2023-12-02 15:41:15,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:15 BoogieIcfgContainer [2023-12-02 15:41:15,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:41:15,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:41:15,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:41:15,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:41:15,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:41:02" (1/3) ... [2023-12-02 15:41:15,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4179029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:15, skipping insertion in model container [2023-12-02 15:41:15,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:41:03" (2/3) ... [2023-12-02 15:41:15,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4179029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:41:15, skipping insertion in model container [2023-12-02 15:41:15,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:41:15" (3/3) ... [2023-12-02 15:41:15,801 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2023-12-02 15:41:15,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:41:15,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 15:41:15,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:41:15,864 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;@64c0826d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:41:15,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 15:41:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 15:41:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:41:15,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:15,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:15,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:15,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1452692516, now seen corresponding path program 1 times [2023-12-02 15:41:15,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:15,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932380523] [2023-12-02 15:41:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:15,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:15,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:15,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:41:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:16,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:41:16,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:16,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:16,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:16,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932380523] [2023-12-02 15:41:16,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932380523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:16,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:16,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:41:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105762614] [2023-12-02 15:41:16,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:16,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:41:16,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:41:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:41:16,215 INFO L87 Difference]: Start difference. First operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:16,270 INFO L93 Difference]: Finished difference Result 316 states and 417 transitions. [2023-12-02 15:41:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:41:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2023-12-02 15:41:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:16,285 INFO L225 Difference]: With dead ends: 316 [2023-12-02 15:41:16,285 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 15:41:16,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:41:16,290 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:16,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:41:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 15:41:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-02 15:41:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 298 states have (on average 1.3154362416107384) internal successors, (392), 305 states have internal predecessors, (392), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:41:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2023-12-02 15:41:16,348 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 416 transitions. Word has length 9 [2023-12-02 15:41:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:16,348 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 416 transitions. [2023-12-02 15:41:16,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:16,349 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 416 transitions. [2023-12-02 15:41:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:41:16,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:16,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:16,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:16,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:16,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:16,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:16,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1201787036, now seen corresponding path program 1 times [2023-12-02 15:41:16,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:16,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973158815] [2023-12-02 15:41:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:16,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:16,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:16,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:41:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:16,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:41:16,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:16,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:16,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:16,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973158815] [2023-12-02 15:41:16,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973158815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:16,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:16,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:41:16,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483505677] [2023-12-02 15:41:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:16,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:16,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:16,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:16,728 INFO L87 Difference]: Start difference. First operand 315 states and 416 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:16,963 INFO L93 Difference]: Finished difference Result 561 states and 744 transitions. [2023-12-02 15:41:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:16,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2023-12-02 15:41:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:16,968 INFO L225 Difference]: With dead ends: 561 [2023-12-02 15:41:16,968 INFO L226 Difference]: Without dead ends: 561 [2023-12-02 15:41:16,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:16,969 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 303 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:16,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:41:16,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-02 15:41:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 317. [2023-12-02 15:41:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 307 states have internal predecessors, (394), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:41:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 418 transitions. [2023-12-02 15:41:16,996 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 418 transitions. Word has length 10 [2023-12-02 15:41:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:16,997 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 418 transitions. [2023-12-02 15:41:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 418 transitions. [2023-12-02 15:41:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:41:17,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:17,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:17,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:41:17,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:17,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:17,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1178639054, now seen corresponding path program 1 times [2023-12-02 15:41:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650821232] [2023-12-02 15:41:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:17,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:17,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:17,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:41:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:17,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:17,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:17,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:17,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:17,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650821232] [2023-12-02 15:41:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650821232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:41:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184583714] [2023-12-02 15:41:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:17,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:41:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:41:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:41:17,930 INFO L87 Difference]: Start difference. First operand 317 states and 418 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:18,058 INFO L93 Difference]: Finished difference Result 321 states and 414 transitions. [2023-12-02 15:41:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:41:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 15:41:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:18,061 INFO L225 Difference]: With dead ends: 321 [2023-12-02 15:41:18,061 INFO L226 Difference]: Without dead ends: 321 [2023-12-02 15:41:18,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:41:18,062 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 36 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:18,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1125 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-02 15:41:18,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-12-02 15:41:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 303 states have (on average 1.283828382838284) internal successors, (389), 310 states have internal predecessors, (389), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:41:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 413 transitions. [2023-12-02 15:41:18,078 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 413 transitions. Word has length 151 [2023-12-02 15:41:18,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:18,079 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 413 transitions. [2023-12-02 15:41:18,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 413 transitions. [2023-12-02 15:41:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 15:41:18,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:18,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:18,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 15:41:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:18,288 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:18,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:18,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1740524222, now seen corresponding path program 1 times [2023-12-02 15:41:18,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:18,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078446158] [2023-12-02 15:41:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:18,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:18,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:18,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:18,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:41:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:18,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:18,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:19,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:19,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078446158] [2023-12-02 15:41:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1078446158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:41:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263499018] [2023-12-02 15:41:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:19,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:19,191 INFO L87 Difference]: Start difference. First operand 320 states and 413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:20,193 INFO L93 Difference]: Finished difference Result 415 states and 529 transitions. [2023-12-02 15:41:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 15:41:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:20,197 INFO L225 Difference]: With dead ends: 415 [2023-12-02 15:41:20,197 INFO L226 Difference]: Without dead ends: 415 [2023-12-02 15:41:20,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:41:20,199 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 79 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:20,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 797 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:41:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-02 15:41:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 362. [2023-12-02 15:41:20,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 345 states have (on average 1.2608695652173914) internal successors, (435), 352 states have internal predecessors, (435), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 15:41:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 459 transitions. [2023-12-02 15:41:20,213 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 459 transitions. Word has length 151 [2023-12-02 15:41:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:20,213 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 459 transitions. [2023-12-02 15:41:20,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:41:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 459 transitions. [2023-12-02 15:41:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 15:41:20,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:20,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:20,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:41:20,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:20,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1105018770, now seen corresponding path program 1 times [2023-12-02 15:41:20,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:20,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63308981] [2023-12-02 15:41:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:20,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:20,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:20,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:20,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 15:41:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:21,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:41:21,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:21,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:21,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63308981] [2023-12-02 15:41:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63308981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:21,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:41:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800917808] [2023-12-02 15:41:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:41:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:41:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:41:21,116 INFO L87 Difference]: Start difference. First operand 362 states and 459 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:21,201 INFO L93 Difference]: Finished difference Result 364 states and 463 transitions. [2023-12-02 15:41:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:41:21,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-12-02 15:41:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:21,205 INFO L225 Difference]: With dead ends: 364 [2023-12-02 15:41:21,205 INFO L226 Difference]: Without dead ends: 364 [2023-12-02 15:41:21,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:41:21,207 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:21,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1187 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-02 15:41:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2023-12-02 15:41:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 346 states have (on average 1.2630057803468209) internal successors, (437), 354 states have internal predecessors, (437), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 15:41:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 463 transitions. [2023-12-02 15:41:21,219 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 463 transitions. Word has length 164 [2023-12-02 15:41:21,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:21,220 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 463 transitions. [2023-12-02 15:41:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:41:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 463 transitions. [2023-12-02 15:41:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 15:41:21,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:21,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:21,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 15:41:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:21,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:21,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -980723662, now seen corresponding path program 1 times [2023-12-02 15:41:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:21,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071780762] [2023-12-02 15:41:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:21,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:21,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:21,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:21,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 15:41:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:22,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:22,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:41:22,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:41:22,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071780762] [2023-12-02 15:41:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071780762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1993088449] [2023-12-02 15:41:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:22,360 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:22,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:22,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 15:41:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:23,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:41:23,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:41:23,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:23,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1993088449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:23,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:41:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343640892] [2023-12-02 15:41:23,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:23,286 INFO L87 Difference]: Start difference. First operand 364 states and 463 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:23,393 INFO L93 Difference]: Finished difference Result 385 states and 484 transitions. [2023-12-02 15:41:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:23,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 15:41:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:23,397 INFO L225 Difference]: With dead ends: 385 [2023-12-02 15:41:23,398 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 15:41:23,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:23,399 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 8 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:23,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 748 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 15:41:23,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2023-12-02 15:41:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 366 states have (on average 1.2486338797814207) internal successors, (457), 374 states have internal predecessors, (457), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 15:41:23,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 483 transitions. [2023-12-02 15:41:23,413 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 483 transitions. Word has length 166 [2023-12-02 15:41:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:23,413 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 483 transitions. [2023-12-02 15:41:23,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 483 transitions. [2023-12-02 15:41:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 15:41:23,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:23,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:23,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 15:41:23,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 15:41:23,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:23,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:23,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1889855826, now seen corresponding path program 1 times [2023-12-02 15:41:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667084902] [2023-12-02 15:41:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:23,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:23,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 15:41:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:24,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:24,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:41:24,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:41:24,659 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667084902] [2023-12-02 15:41:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667084902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [863901986] [2023-12-02 15:41:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:24,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:24,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:41:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:25,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:25,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:41:25,824 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [863901986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:25,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:25,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:41:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521434081] [2023-12-02 15:41:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:25,827 INFO L87 Difference]: Start difference. First operand 384 states and 483 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:26,567 INFO L93 Difference]: Finished difference Result 683 states and 868 transitions. [2023-12-02 15:41:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 15:41:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:26,573 INFO L225 Difference]: With dead ends: 683 [2023-12-02 15:41:26,574 INFO L226 Difference]: Without dead ends: 683 [2023-12-02 15:41:26,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:26,575 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 307 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:26,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 884 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:41:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-02 15:41:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 626. [2023-12-02 15:41:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 599 states have (on average 1.2470784641068446) internal successors, (747), 612 states have internal predecessors, (747), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-12-02 15:41:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 793 transitions. [2023-12-02 15:41:26,601 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 793 transitions. Word has length 166 [2023-12-02 15:41:26,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:26,602 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 793 transitions. [2023-12-02 15:41:26,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 793 transitions. [2023-12-02 15:41:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-02 15:41:26,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:26,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:26,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 15:41:26,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 15:41:27,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:27,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:27,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1642793464, now seen corresponding path program 1 times [2023-12-02 15:41:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438271684] [2023-12-02 15:41:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:27,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:27,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:27,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 15:41:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:27,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:27,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:41:27,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:41:27,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438271684] [2023-12-02 15:41:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438271684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:27,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2082746263] [2023-12-02 15:41:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:27,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:27,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:27,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:27,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 15:41:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:28,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:28,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 15:41:29,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2082746263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:29,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:29,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 15:41:29,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640008536] [2023-12-02 15:41:29,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:29,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:41:29,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:29,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:41:29,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:29,502 INFO L87 Difference]: Start difference. First operand 626 states and 793 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:30,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:30,418 INFO L93 Difference]: Finished difference Result 823 states and 1046 transitions. [2023-12-02 15:41:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:41:30,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-12-02 15:41:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:30,429 INFO L225 Difference]: With dead ends: 823 [2023-12-02 15:41:30,429 INFO L226 Difference]: Without dead ends: 823 [2023-12-02 15:41:30,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:41:30,430 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 164 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:30,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 832 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:41:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-02 15:41:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 766. [2023-12-02 15:41:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 736 states have (on average 1.247282608695652) internal successors, (918), 749 states have internal predecessors, (918), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:41:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 971 transitions. [2023-12-02 15:41:30,456 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 971 transitions. Word has length 174 [2023-12-02 15:41:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:30,456 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 971 transitions. [2023-12-02 15:41:30,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:41:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 971 transitions. [2023-12-02 15:41:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:41:30,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:30,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:30,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 15:41:30,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 15:41:30,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:30,860 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:30,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash -208640395, now seen corresponding path program 1 times [2023-12-02 15:41:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:30,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447192108] [2023-12-02 15:41:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:30,862 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:30,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 15:41:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:31,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:31,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:41:31,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:41:31,740 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447192108] [2023-12-02 15:41:31,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447192108] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170130596] [2023-12-02 15:41:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:31,740 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:31,741 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:31,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 15:41:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:32,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:32,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 15:41:32,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:32,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170130596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:32,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:32,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-12-02 15:41:32,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939414471] [2023-12-02 15:41:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:32,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:41:32,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:41:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:41:32,724 INFO L87 Difference]: Start difference. First operand 766 states and 971 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:32,843 INFO L93 Difference]: Finished difference Result 796 states and 986 transitions. [2023-12-02 15:41:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:41:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 15:41:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:32,848 INFO L225 Difference]: With dead ends: 796 [2023-12-02 15:41:32,848 INFO L226 Difference]: Without dead ends: 796 [2023-12-02 15:41:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:41:32,849 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 34 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1091 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-02 15:41:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2023-12-02 15:41:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 763 states have (on average 1.218872870249017) internal successors, (930), 776 states have internal predecessors, (930), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:41:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 983 transitions. [2023-12-02 15:41:32,872 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 983 transitions. Word has length 181 [2023-12-02 15:41:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:32,872 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 983 transitions. [2023-12-02 15:41:32,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 983 transitions. [2023-12-02 15:41:32,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:41:32,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:32,875 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:32,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 15:41:33,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:33,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:33,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 609008055, now seen corresponding path program 1 times [2023-12-02 15:41:33,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081814323] [2023-12-02 15:41:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:33,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:33,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:33,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 15:41:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:34,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:34,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:41:34,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:41:34,291 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081814323] [2023-12-02 15:41:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081814323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:34,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [983504901] [2023-12-02 15:41:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:34,292 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:34,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:34,293 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:34,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 15:41:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:35,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:35,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 15:41:35,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [983504901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:35,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:35,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:41:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116316887] [2023-12-02 15:41:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:41:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:41:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:41:35,372 INFO L87 Difference]: Start difference. First operand 793 states and 983 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:41:35,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:35,481 INFO L93 Difference]: Finished difference Result 745 states and 902 transitions. [2023-12-02 15:41:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:41:35,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2023-12-02 15:41:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:35,486 INFO L225 Difference]: With dead ends: 745 [2023-12-02 15:41:35,486 INFO L226 Difference]: Without dead ends: 745 [2023-12-02 15:41:35,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:41:35,487 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 39 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:35,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1065 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-12-02 15:41:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 742. [2023-12-02 15:41:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 712 states have (on average 1.1882022471910112) internal successors, (846), 725 states have internal predecessors, (846), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 15:41:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 899 transitions. [2023-12-02 15:41:35,503 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 899 transitions. Word has length 181 [2023-12-02 15:41:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:35,503 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 899 transitions. [2023-12-02 15:41:35,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 15:41:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 899 transitions. [2023-12-02 15:41:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:41:35,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:35,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:35,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:35,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:35,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1118666473, now seen corresponding path program 1 times [2023-12-02 15:41:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578517623] [2023-12-02 15:41:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:35,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:35,910 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:35,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 15:41:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:36,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:36,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:41:36,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:41:37,049 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578517623] [2023-12-02 15:41:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578517623] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794830269] [2023-12-02 15:41:37,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:37,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:37,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:37,051 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:37,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 15:41:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:38,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:41:38,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:41:38,487 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794830269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:38,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:38,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:41:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969333609] [2023-12-02 15:41:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:41:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:41:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:41:38,490 INFO L87 Difference]: Start difference. First operand 742 states and 899 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:40,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:42,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:47,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:49,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:51,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:55,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 15:41:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:55,268 INFO L93 Difference]: Finished difference Result 679 states and 815 transitions. [2023-12-02 15:41:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:41:55,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 15:41:55,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:55,273 INFO L225 Difference]: With dead ends: 679 [2023-12-02 15:41:55,273 INFO L226 Difference]: Without dead ends: 679 [2023-12-02 15:41:55,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:41:55,274 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 469 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:55,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 656 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 5 Unknown, 0 Unchecked, 16.7s Time] [2023-12-02 15:41:55,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-02 15:41:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 462. [2023-12-02 15:41:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 441 states have (on average 1.1904761904761905) internal successors, (525), 449 states have internal predecessors, (525), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 15:41:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 558 transitions. [2023-12-02 15:41:55,290 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 558 transitions. Word has length 181 [2023-12-02 15:41:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:55,290 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 558 transitions. [2023-12-02 15:41:55,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 558 transitions. [2023-12-02 15:41:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 15:41:55,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:55,293 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:55,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:55,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 15:41:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:55,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1675950285, now seen corresponding path program 1 times [2023-12-02 15:41:55,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:55,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051255511] [2023-12-02 15:41:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:55,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:55,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:55,711 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:55,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 15:41:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:56,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:56,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:41:56,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:41:56,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051255511] [2023-12-02 15:41:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051255511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1650328461] [2023-12-02 15:41:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:56,785 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:56,786 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:56,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 15:41:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:57,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:57,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 15:41:58,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1650328461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:58,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:58,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 15:41:58,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185354673] [2023-12-02 15:41:58,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:58,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:41:58,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:41:58,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:41:58,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:41:58,030 INFO L87 Difference]: Start difference. First operand 462 states and 558 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:58,121 INFO L93 Difference]: Finished difference Result 450 states and 539 transitions. [2023-12-02 15:41:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:41:58,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2023-12-02 15:41:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:58,124 INFO L225 Difference]: With dead ends: 450 [2023-12-02 15:41:58,124 INFO L226 Difference]: Without dead ends: 450 [2023-12-02 15:41:58,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:41:58,125 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 32 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:58,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1051 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-02 15:41:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2023-12-02 15:41:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.1794871794871795) internal successors, (506), 437 states have internal predecessors, (506), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 15:41:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 539 transitions. [2023-12-02 15:41:58,134 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 539 transitions. Word has length 189 [2023-12-02 15:41:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:58,134 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 539 transitions. [2023-12-02 15:41:58,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:41:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 539 transitions. [2023-12-02 15:41:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 15:41:58,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:58,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:58,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-02 15:41:58,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 15:41:58,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:58,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:41:58,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 347985893, now seen corresponding path program 1 times [2023-12-02 15:41:58,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:41:58,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021758151] [2023-12-02 15:41:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:58,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:41:58,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:41:58,539 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:41:58,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 15:41:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:59,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:59,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:41:59,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:41:59,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:41:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021758151] [2023-12-02 15:41:59,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021758151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537136054] [2023-12-02 15:41:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:41:59,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:41:59,594 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:41:59,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 15:42:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:01,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:42:01,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 15:42:01,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:42:01,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1537136054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:01,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318262400] [2023-12-02 15:42:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:01,641 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:01,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:42:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:02,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:42:02,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:42:03,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 15:42:03,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318262400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:03,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:42:03,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-12-02 15:42:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803612366] [2023-12-02 15:42:03,748 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:42:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:42:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:42:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:42:03,752 INFO L87 Difference]: Start difference. First operand 450 states and 539 transitions. Second operand has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:42:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:05,921 INFO L93 Difference]: Finished difference Result 977 states and 1188 transitions. [2023-12-02 15:42:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:42:05,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 189 [2023-12-02 15:42:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:05,929 INFO L225 Difference]: With dead ends: 977 [2023-12-02 15:42:05,929 INFO L226 Difference]: Without dead ends: 977 [2023-12-02 15:42:05,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:42:05,931 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1434 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:05,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 4243 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 15:42:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-02 15:42:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 907. [2023-12-02 15:42:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 871 states have (on average 1.1802525832376578) internal successors, (1028), 884 states have internal predecessors, (1028), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 15:42:05,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1094 transitions. [2023-12-02 15:42:05,983 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1094 transitions. Word has length 189 [2023-12-02 15:42:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:05,983 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1094 transitions. [2023-12-02 15:42:05,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:42:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1094 transitions. [2023-12-02 15:42:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 15:42:05,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:05,989 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:06,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 15:42:06,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 15:42:06,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:42:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:06,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:42:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1511395767, now seen corresponding path program 1 times [2023-12-02 15:42:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:06,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189037518] [2023-12-02 15:42:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:06,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:42:06,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:06,597 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:42:06,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 15:42:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:09,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:42:09,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 15:42:09,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 15:42:09,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:42:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189037518] [2023-12-02 15:42:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189037518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045905513] [2023-12-02 15:42:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:42:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:42:09,663 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:42:09,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 15:42:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:13,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:42:13,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 15:42:13,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 15:42:13,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2045905513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:13,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893677102] [2023-12-02 15:42:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:13,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:13,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:13,790 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:13,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:42:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:16,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:42:16,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-12-02 15:42:16,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 128 proven. 29 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-02 15:42:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893677102] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:16,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:42:16,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-12-02 15:42:16,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644454285] [2023-12-02 15:42:16,789 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:42:16,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:42:16,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:42:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-02 15:42:16,793 INFO L87 Difference]: Start difference. First operand 907 states and 1094 transitions. Second operand has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:42:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:18,047 INFO L93 Difference]: Finished difference Result 926 states and 1150 transitions. [2023-12-02 15:42:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 15:42:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 515 [2023-12-02 15:42:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:18,052 INFO L225 Difference]: With dead ends: 926 [2023-12-02 15:42:18,053 INFO L226 Difference]: Without dead ends: 923 [2023-12-02 15:42:18,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3109 GetRequests, 3066 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 15:42:18,054 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 34 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:18,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3254 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:42:18,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-02 15:42:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 919. [2023-12-02 15:42:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 883 states have (on average 1.1823329558323896) internal successors, (1044), 896 states have internal predecessors, (1044), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 15:42:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1110 transitions. [2023-12-02 15:42:18,078 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1110 transitions. Word has length 515 [2023-12-02 15:42:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:18,078 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1110 transitions. [2023-12-02 15:42:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 15:42:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1110 transitions. [2023-12-02 15:42:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-12-02 15:42:18,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:18,084 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:18,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-02 15:42:18,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 15:42:18,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:42:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:18,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:42:18,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 36345143, now seen corresponding path program 2 times [2023-12-02 15:42:18,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070247784] [2023-12-02 15:42:18,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:42:18,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:42:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:18,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:42:18,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 15:42:21,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:42:21,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:42:22,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:42:22,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 15:42:22,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 15:42:23,005 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:42:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070247784] [2023-12-02 15:42:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070247784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [917362264] [2023-12-02 15:42:23,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:42:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:42:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:42:23,007 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:42:23,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 15:42:28,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:42:28,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:42:29,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:42:29,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 15:42:29,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 15:42:29,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [917362264] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337121255] [2023-12-02 15:42:29,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 15:42:29,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:29,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:29,409 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:29,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 15:42:32,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 15:42:32,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:42:32,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:42:32,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 15:42:33,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 15:42:35,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337121255] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:35,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 15:42:35,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-12-02 15:42:35,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100836163] [2023-12-02 15:42:35,712 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 15:42:35,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 15:42:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:42:35,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 15:42:35,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 15:42:35,719 INFO L87 Difference]: Start difference. First operand 919 states and 1110 transitions. Second operand has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:42:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:54,366 INFO L93 Difference]: Finished difference Result 2247 states and 2882 transitions. [2023-12-02 15:42:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 15:42:54,368 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 539 [2023-12-02 15:42:54,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:54,379 INFO L225 Difference]: With dead ends: 2247 [2023-12-02 15:42:54,379 INFO L226 Difference]: Without dead ends: 2245 [2023-12-02 15:42:54,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3267 GetRequests, 3198 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 15:42:54,382 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 3245 mSDsluCounter, 23923 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 25192 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:54,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3407 Valid, 25192 Invalid, 4266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [714 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2023-12-02 15:42:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2023-12-02 15:42:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2164. [2023-12-02 15:42:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2089 states have (on average 1.170416467209191) internal successors, (2445), 2117 states have internal predecessors, (2445), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (87), 47 states have call predecessors, (87), 67 states have call successors, (87) [2023-12-02 15:42:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2601 transitions. [2023-12-02 15:42:54,457 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2601 transitions. Word has length 539 [2023-12-02 15:42:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:54,458 INFO L495 AbstractCegarLoop]: Abstraction has 2164 states and 2601 transitions. [2023-12-02 15:42:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 15:42:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2601 transitions. [2023-12-02 15:42:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-02 15:42:54,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:54,482 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:42:54,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 15:42:54,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 15:42:54,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-12-02 15:42:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:42:55,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 15:42:55,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1517715187, now seen corresponding path program 3 times [2023-12-02 15:42:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:42:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627211636] [2023-12-02 15:42:55,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:42:55,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:42:55,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:42:55,093 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:42:55,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc9aa1a4-752d-40ae-b7a0-4fb66b99b8b9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process