./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.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_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:16:15,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:16:15,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 16:16:15,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:16:15,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:16:15,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:16:15,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:16:15,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:16:15,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:16:15,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:16:15,813 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:16:15,814 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:16:15,814 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:16:15,815 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:16:15,815 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:16:15,816 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:16:15,816 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:16:15,817 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:16:15,817 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:16:15,818 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:16:15,818 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:16:15,819 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:16:15,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:16:15,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:16:15,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:16:15,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:16:15,821 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:16:15,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:16:15,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:16:15,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:16:15,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:16:15,823 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:16:15,824 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:16:15,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:16:15,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:16:15,824 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:16:15,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:16:15,825 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:16:15,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:16:15,825 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:16:15,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:16:15,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:16:15,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:16:15,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:16:15,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:16:15,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:16:15,828 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_acdbf31b-4c7a-484d-938d-e7c496d13f99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-12-02 16:16:16,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:16:16,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:16:16,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:16:16,079 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:16:16,080 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:16:16,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-12-02 16:16:18,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:16:19,123 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:16:19,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-12-02 16:16:19,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/2f06cb0c0/077d38de88c54e36a80ed8e415f5a83c/FLAG3b59d18f9 [2023-12-02 16:16:19,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/2f06cb0c0/077d38de88c54e36a80ed8e415f5a83c [2023-12-02 16:16:19,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:16:19,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:16:19,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:19,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:16:19,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:16:19,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:19" (1/1) ... [2023-12-02 16:16:19,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c8f3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:19, skipping insertion in model container [2023-12-02 16:16:19,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:19" (1/1) ... [2023-12-02 16:16:19,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:16:19,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:19,735 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 16:16:19,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bd7cd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:19, skipping insertion in model container [2023-12-02 16:16:19,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:19,736 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 16:16:19,738 INFO L158 Benchmark]: Toolchain (without parser) took 581.87ms. Allocated memory is still 165.7MB. Free memory was 125.9MB in the beginning and 125.3MB in the end (delta: 516.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:16:19,739 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:16:19,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.71ms. Allocated memory is still 165.7MB. Free memory was 125.9MB in the beginning and 125.3MB in the end (delta: 516.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:16:19,741 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 117.4MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.71ms. Allocated memory is still 165.7MB. Free memory was 125.9MB in the beginning and 125.3MB in the end (delta: 516.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:16:21,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:16:21,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 16:16:21,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:16:21,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:16:21,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:16:21,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:16:21,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:16:21,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:16:21,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:16:21,615 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:16:21,615 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:16:21,616 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:16:21,616 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:16:21,617 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:16:21,617 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:16:21,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:16:21,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:16:21,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:16:21,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:16:21,620 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:16:21,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:16:21,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:16:21,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:16:21,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:16:21,622 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:16:21,622 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:16:21,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:16:21,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:16:21,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:16:21,624 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:16:21,624 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:16:21,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:16:21,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:16:21,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:16:21,625 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:16:21,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:16:21,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:16:21,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:16:21,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:16:21,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:16:21,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:16:21,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:16:21,627 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:16:21,628 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:21,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:16:21,628 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:16:21,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:16:21,628 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_acdbf31b-4c7a-484d-938d-e7c496d13f99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd259ad1e1e9b7f6e2ebd2858541cc7ac07d30ed5cbee2b9de70c1db1c5b700e [2023-12-02 16:16:21,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:16:21,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:16:21,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:16:21,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:16:21,949 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:16:21,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-12-02 16:16:24,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:16:24,999 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:16:25,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-3.i [2023-12-02 16:16:25,018 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/0c3d8a640/0959f4feea76433386cee51d3858f891/FLAG7d5025483 [2023-12-02 16:16:25,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/data/0c3d8a640/0959f4feea76433386cee51d3858f891 [2023-12-02 16:16:25,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:16:25,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:16:25,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:25,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:16:25,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:16:25,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:25,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aac5418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25, skipping insertion in model container [2023-12-02 16:16:25,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:25,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:16:25,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:25,682 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 16:16:25,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:16:25,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:25,785 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:16:25,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:25,940 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:16:25,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25 WrapperNode [2023-12-02 16:16:25,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:25,942 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:16:25,942 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:16:25,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:16:25,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:25,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,053 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1460 [2023-12-02 16:16:26,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:16:26,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:16:26,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:16:26,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:16:26,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:16:26,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:16:26,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:16:26,195 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:16:26,195 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (1/1) ... [2023-12-02 16:16:26,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:16:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:16:26,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:16:26,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:16:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:16:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:16:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:16:26,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:16:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:16:26,265 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:16:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:16:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:16:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:16:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:16:26,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:16:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:16:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:16:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:16:26,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:16:26,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:16:26,494 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:16:26,496 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:16:37,175 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:16:37,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:16:37,214 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-12-02 16:16:37,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:16:37 BoogieIcfgContainer [2023-12-02 16:16:37,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:16:37,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:16:37,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:16:37,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:16:37,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:16:25" (1/3) ... [2023-12-02 16:16:37,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc179c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:16:37, skipping insertion in model container [2023-12-02 16:16:37,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:25" (2/3) ... [2023-12-02 16:16:37,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc179c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:16:37, skipping insertion in model container [2023-12-02 16:16:37,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:16:37" (3/3) ... [2023-12-02 16:16:37,223 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-3.i [2023-12-02 16:16:37,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:16:37,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 16:16:37,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:16:37,288 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;@54f1b6b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:16:37,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 16:16:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 245 states have (on average 1.6775510204081632) internal successors, (411), 257 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:16:37,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 16:16:37,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:37,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:37,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1951363134, now seen corresponding path program 1 times [2023-12-02 16:16:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:37,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986510523] [2023-12-02 16:16:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:37,315 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 16:16:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:37,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:37,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:37,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:16:37,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:37,575 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 16:16:37,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:37,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986510523] [2023-12-02 16:16:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986510523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:37,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:37,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:16:37,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4001879] [2023-12-02 16:16:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:37,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:37,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:37,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:37,616 INFO L87 Difference]: Start difference. First operand has 266 states, 245 states have (on average 1.6775510204081632) internal successors, (411), 257 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 16:16:37,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:37,854 INFO L93 Difference]: Finished difference Result 439 states and 582 transitions. [2023-12-02 16:16:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:37,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 10 [2023-12-02 16:16:37,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:37,870 INFO L225 Difference]: With dead ends: 439 [2023-12-02 16:16:37,870 INFO L226 Difference]: Without dead ends: 438 [2023-12-02 16:16:37,872 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 16:16:37,875 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 213 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:37,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 695 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:16:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-02 16:16:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 265. [2023-12-02 16:16:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 256 states have internal predecessors, (324), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:16:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 356 transitions. [2023-12-02 16:16:37,928 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 356 transitions. Word has length 10 [2023-12-02 16:16:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:37,929 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 356 transitions. [2023-12-02 16:16:37,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 16:16:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 356 transitions. [2023-12-02 16:16:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:16:37,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:37,935 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] [2023-12-02 16:16:37,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:38,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:38,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:38,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -341190442, now seen corresponding path program 1 times [2023-12-02 16:16:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084168701] [2023-12-02 16:16:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:38,141 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 16:16:38,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:38,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:38,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:16:38,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:38,747 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 16:16:38,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:38,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084168701] [2023-12-02 16:16:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084168701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:38,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:38,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:16:38,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848807710] [2023-12-02 16:16:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:38,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:16:38,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:38,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:16:38,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:16:38,752 INFO L87 Difference]: Start difference. First operand 265 states and 356 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 16:16:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:38,877 INFO L93 Difference]: Finished difference Result 269 states and 352 transitions. [2023-12-02 16:16:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:16:38,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 116 [2023-12-02 16:16:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:38,881 INFO L225 Difference]: With dead ends: 269 [2023-12-02 16:16:38,881 INFO L226 Difference]: Without dead ends: 269 [2023-12-02 16:16:38,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 16:16:38,882 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 36 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 942 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 16:16:38,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 942 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:16:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-02 16:16:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2023-12-02 16:16:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 259 states have internal predecessors, (319), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:16:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 351 transitions. [2023-12-02 16:16:38,902 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 351 transitions. Word has length 116 [2023-12-02 16:16:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:38,903 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 351 transitions. [2023-12-02 16:16:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 16:16:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 351 transitions. [2023-12-02 16:16:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 16:16:38,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:38,907 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] [2023-12-02 16:16:38,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:39,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:39,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 311745378, now seen corresponding path program 1 times [2023-12-02 16:16:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:39,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750909486] [2023-12-02 16:16:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:39,115 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 16:16:39,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:39,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:39,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:39,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:16:39,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:39,999 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 16:16:39,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:39,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750909486] [2023-12-02 16:16:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750909486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:40,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:40,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:16:40,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768027726] [2023-12-02 16:16:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:40,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:40,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:40,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:40,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:16:40,002 INFO L87 Difference]: Start difference. First operand 268 states and 351 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 16:16:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:40,762 INFO L93 Difference]: Finished difference Result 363 states and 467 transitions. [2023-12-02 16:16:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 116 [2023-12-02 16:16:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:40,770 INFO L225 Difference]: With dead ends: 363 [2023-12-02 16:16:40,771 INFO L226 Difference]: Without dead ends: 363 [2023-12-02 16:16:40,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 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 16:16:40,772 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 79 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:40,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 642 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:16:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-02 16:16:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 310. [2023-12-02 16:16:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 290 states have (on average 1.2586206896551724) internal successors, (365), 301 states have internal predecessors, (365), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 16:16:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 397 transitions. [2023-12-02 16:16:40,789 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 397 transitions. Word has length 116 [2023-12-02 16:16:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:40,790 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 397 transitions. [2023-12-02 16:16:40,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 16:16:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 397 transitions. [2023-12-02 16:16:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 16:16:40,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:40,793 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] [2023-12-02 16:16:40,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:40,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:40,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash -942484721, now seen corresponding path program 1 times [2023-12-02 16:16:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:40,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358932006] [2023-12-02 16:16:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:40,996 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 16:16:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:40,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:40,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:41,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:16:41,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:41,635 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 16:16:41,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:41,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358932006] [2023-12-02 16:16:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358932006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:41,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:16:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:16:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471714543] [2023-12-02 16:16:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:41,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:16:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:16:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:16:41,639 INFO L87 Difference]: Start difference. First operand 310 states and 397 transitions. Second operand has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 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 16:16:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:41,737 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2023-12-02 16:16:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:16:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 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 129 [2023-12-02 16:16:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:41,740 INFO L225 Difference]: With dead ends: 312 [2023-12-02 16:16:41,740 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 16:16:41,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 16:16:41,742 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1004 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 16:16:41,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1004 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:16:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 16:16:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-12-02 16:16:41,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 291 states have (on average 1.261168384879725) internal successors, (367), 303 states have internal predecessors, (367), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 16:16:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 401 transitions. [2023-12-02 16:16:41,755 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 401 transitions. Word has length 129 [2023-12-02 16:16:41,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:41,755 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 401 transitions. [2023-12-02 16:16:41,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 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 16:16:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 401 transitions. [2023-12-02 16:16:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 16:16:41,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:41,758 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] [2023-12-02 16:16:41,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:41,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:41,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:41,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash 511910765, now seen corresponding path program 1 times [2023-12-02 16:16:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994475837] [2023-12-02 16:16:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:41,963 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 16:16:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:41,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:42,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:42,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:42,591 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 16:16:42,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:42,697 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 16:16:42,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:42,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994475837] [2023-12-02 16:16:42,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994475837] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1178269617] [2023-12-02 16:16:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:42,699 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:42,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:16:42,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:16:42,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 16:16:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:43,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:43,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:43,485 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 16:16:43,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1178269617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:16:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 16:16:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432944419] [2023-12-02 16:16:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:16:43,488 INFO L87 Difference]: Start difference. First operand 312 states and 401 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 16:16:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:43,600 INFO L93 Difference]: Finished difference Result 333 states and 422 transitions. [2023-12-02 16:16:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 131 [2023-12-02 16:16:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:43,604 INFO L225 Difference]: With dead ends: 333 [2023-12-02 16:16:43,604 INFO L226 Difference]: Without dead ends: 333 [2023-12-02 16:16:43,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 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 16:16:43,605 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 9 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:43,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 626 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:16:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-02 16:16:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2023-12-02 16:16:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 311 states have (on average 1.2443729903536977) internal successors, (387), 323 states have internal predecessors, (387), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 16:16:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 421 transitions. [2023-12-02 16:16:43,618 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 421 transitions. Word has length 131 [2023-12-02 16:16:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:43,618 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 421 transitions. [2023-12-02 16:16:43,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 16:16:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 421 transitions. [2023-12-02 16:16:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 16:16:43,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:43,621 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] [2023-12-02 16:16:43,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:43,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 16:16:44,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:44,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:44,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2930033, now seen corresponding path program 1 times [2023-12-02 16:16:44,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:44,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371428213] [2023-12-02 16:16:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:44,034 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 16:16:44,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:44,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:44,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 (8)] Waiting until timeout for monitored process [2023-12-02 16:16:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:44,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:44,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:44,663 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 16:16:44,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:44,735 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 16:16:44,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371428213] [2023-12-02 16:16:44,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371428213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1072845016] [2023-12-02 16:16:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:44,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:44,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:16:44,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:16:44,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 16:16:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:45,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:16:45,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:46,024 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 16:16:46,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1072845016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:16:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 16:16:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321427513] [2023-12-02 16:16:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:16:46,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:46,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:16:46,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:16:46,027 INFO L87 Difference]: Start difference. First operand 332 states and 421 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 16:16:46,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:46,474 INFO L93 Difference]: Finished difference Result 435 states and 550 transitions. [2023-12-02 16:16:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:16:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 131 [2023-12-02 16:16:46,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:46,483 INFO L225 Difference]: With dead ends: 435 [2023-12-02 16:16:46,483 INFO L226 Difference]: Without dead ends: 435 [2023-12-02 16:16:46,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 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 16:16:46,484 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 57 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:46,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 663 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:16:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-02 16:16:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2023-12-02 16:16:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 411 states have (on average 1.2384428223844282) internal successors, (509), 423 states have internal predecessors, (509), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-12-02 16:16:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 550 transitions. [2023-12-02 16:16:46,502 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 550 transitions. Word has length 131 [2023-12-02 16:16:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:46,503 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 550 transitions. [2023-12-02 16:16:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 16:16:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 550 transitions. [2023-12-02 16:16:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:16:46,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:46,506 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] [2023-12-02 16:16:46,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 16:16:46,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 (8)] Ended with exit code 0 [2023-12-02 16:16:46,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:46,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:46,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:46,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1624691345, now seen corresponding path program 1 times [2023-12-02 16:16:46,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:46,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550145417] [2023-12-02 16:16:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:46,908 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 16:16:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:46,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:46,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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)] Waiting until timeout for monitored process [2023-12-02 16:16:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:47,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:47,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:47,671 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 16:16:47,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:47,751 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 16:16:47,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550145417] [2023-12-02 16:16:47,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550145417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:47,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [151917524] [2023-12-02 16:16:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:47,752 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:16:47,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:16:47,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 16:16:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:48,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:48,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:48,666 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 16:16:48,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:16:48,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [151917524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:48,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:16:48,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 16:16:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580714555] [2023-12-02 16:16:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:16:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:16:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:16:48,669 INFO L87 Difference]: Start difference. First operand 435 states and 550 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:16:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:48,810 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2023-12-02 16:16:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:16:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 146 [2023-12-02 16:16:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:48,814 INFO L225 Difference]: With dead ends: 403 [2023-12-02 16:16:48,814 INFO L226 Difference]: Without dead ends: 403 [2023-12-02 16:16:48,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 427 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 16:16:48,815 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 39 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 906 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 16:16:48,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 906 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:16:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-02 16:16:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2023-12-02 16:16:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 377 states have (on average 1.2015915119363396) internal successors, (453), 389 states have internal predecessors, (453), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-12-02 16:16:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 494 transitions. [2023-12-02 16:16:48,829 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 494 transitions. Word has length 146 [2023-12-02 16:16:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 494 transitions. [2023-12-02 16:16:48,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 16:16:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 494 transitions. [2023-12-02 16:16:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:16:48,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:48,832 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] [2023-12-02 16:16:48,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 16:16:49,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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)] Ended with exit code 0 [2023-12-02 16:16:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:49,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:49,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 412843389, now seen corresponding path program 1 times [2023-12-02 16:16:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403035059] [2023-12-02 16:16:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:49,234 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 16:16:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:49,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:49,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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)] Waiting until timeout for monitored process [2023-12-02 16:16:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:49,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:49,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:49,990 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 16:16:49,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:50,066 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 16:16:50,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403035059] [2023-12-02 16:16:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403035059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:50,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [118098738] [2023-12-02 16:16:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:50,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:16:50,068 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:16:50,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 16:16:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:51,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:16:51,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:51,313 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 16:16:51,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:51,354 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 16:16:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [118098738] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540711435] [2023-12-02 16:16:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:51,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:16:51,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:16:51,356 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:16:51,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:16:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:52,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:16:52,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:52,398 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 16:16:52,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:52,788 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 16:16:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540711435] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:52,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:16:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-12-02 16:16:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982661753] [2023-12-02 16:16:52,789 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:16:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:16:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:16:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:16:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 16:16:52,791 INFO L87 Difference]: Start difference. First operand 401 states and 494 transitions. Second operand has 12 states, 10 states have (on average 37.3) internal successors, (373), 12 states have internal predecessors, (373), 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 16:16:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:54,081 INFO L93 Difference]: Finished difference Result 818 states and 1007 transitions. [2023-12-02 16:16:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:16:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 37.3) internal successors, (373), 12 states have internal predecessors, (373), 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 146 [2023-12-02 16:16:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:54,086 INFO L225 Difference]: With dead ends: 818 [2023-12-02 16:16:54,086 INFO L226 Difference]: Without dead ends: 818 [2023-12-02 16:16:54,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-02 16:16:54,086 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1132 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:54,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2867 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 16:16:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-02 16:16:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 817. [2023-12-02 16:16:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 777 states have (on average 1.1879021879021878) internal successors, (923), 789 states have internal predecessors, (923), 34 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (42), 25 states have call predecessors, (42), 34 states have call successors, (42) [2023-12-02 16:16:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 999 transitions. [2023-12-02 16:16:54,108 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 999 transitions. Word has length 146 [2023-12-02 16:16:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:54,108 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 999 transitions. [2023-12-02 16:16:54,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 37.3) internal successors, (373), 12 states have internal predecessors, (373), 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 16:16:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 999 transitions. [2023-12-02 16:16:54,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-12-02 16:16:54,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:54,115 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] [2023-12-02 16:16:54,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 16:16:54,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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)] Ended with exit code 0 [2023-12-02 16:16:54,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 16:16:54,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:54,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:16:54,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash 667745735, now seen corresponding path program 1 times [2023-12-02 16:16:54,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:16:54,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [762921869] [2023-12-02 16:16:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:54,719 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 16:16:54,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:16:54,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:54,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:16:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:56,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:16:56,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:56,780 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 16:16:56,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:56,981 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 16:16:56,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:16:56,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [762921869] [2023-12-02 16:16:56,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [762921869] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322266106] [2023-12-02 16:16:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:56,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:16:56,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:16:56,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:16:56,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 16:16:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:00,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:17:00,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:00,075 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 16:17:00,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:00,149 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 16:17:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1322266106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334219548] [2023-12-02 16:17:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:00,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:00,151 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:00,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 16:17:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:01,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:17:01,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:02,074 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 16:17:02,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:02,261 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 16:17:02,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334219548] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:02,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:17:02,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-12-02 16:17:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824659278] [2023-12-02 16:17:02,263 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:17:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 16:17:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:17:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 16:17:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:17:02,266 INFO L87 Difference]: Start difference. First operand 817 states and 999 transitions. Second operand has 20 states, 16 states have (on average 12.0625) internal successors, (193), 20 states have internal predecessors, (193), 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 16:17:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:03,407 INFO L93 Difference]: Finished difference Result 836 states and 1055 transitions. [2023-12-02 16:17:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 16:17:03,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 12.0625) internal successors, (193), 20 states have internal predecessors, (193), 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 472 [2023-12-02 16:17:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:03,412 INFO L225 Difference]: With dead ends: 836 [2023-12-02 16:17:03,413 INFO L226 Difference]: Without dead ends: 833 [2023-12-02 16:17:03,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2851 GetRequests, 2808 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 16:17:03,414 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 35 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:03,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2853 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:17:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-02 16:17:03,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 829. [2023-12-02 16:17:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 789 states have (on average 1.1901140684410647) internal successors, (939), 801 states have internal predecessors, (939), 34 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (42), 25 states have call predecessors, (42), 34 states have call successors, (42) [2023-12-02 16:17:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1015 transitions. [2023-12-02 16:17:03,437 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1015 transitions. Word has length 472 [2023-12-02 16:17:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1015 transitions. [2023-12-02 16:17:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 12.0625) internal successors, (193), 20 states have internal predecessors, (193), 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 16:17:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1015 transitions. [2023-12-02 16:17:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-02 16:17:03,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:03,447 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] [2023-12-02 16:17:03,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 16:17:03,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 16:17:03,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:17:04,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:17:04,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1545564231, now seen corresponding path program 2 times [2023-12-02 16:17:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:17:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122896283] [2023-12-02 16:17:04,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:17:04,050 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 16:17:04,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:17:04,051 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:17:04,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 16:17:06,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:17:06,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:17:06,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:17:06,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:06,520 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 16:17:06,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 16:17:07,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:17:07,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122896283] [2023-12-02 16:17:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122896283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [375158352] [2023-12-02 16:17:07,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:17:07,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:17:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:17:07,147 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:17:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 16:17:10,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:17:10,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:17:10,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:17:10,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:10,552 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 16:17:10,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:10,723 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 16:17:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [375158352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251943072] [2023-12-02 16:17:10,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 16:17:10,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:10,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:10,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 16:17:12,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 16:17:12,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:17:12,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:17:12,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:13,788 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 16:17:13,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:15,282 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 16:17:15,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251943072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:15,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 16:17:15,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-12-02 16:17:15,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308096074] [2023-12-02 16:17:15,284 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 16:17:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 16:17:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:17:15,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 16:17:15,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 16:17:15,291 INFO L87 Difference]: Start difference. First operand 829 states and 1015 transitions. Second operand has 36 states, 34 states have (on average 31.441176470588236) internal successors, (1069), 36 states have internal predecessors, (1069), 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 16:17:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:28,695 INFO L93 Difference]: Finished difference Result 1935 states and 2515 transitions. [2023-12-02 16:17:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 16:17:28,696 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 31.441176470588236) internal successors, (1069), 36 states have internal predecessors, (1069), 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 496 [2023-12-02 16:17:28,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:28,706 INFO L225 Difference]: With dead ends: 1935 [2023-12-02 16:17:28,707 INFO L226 Difference]: Without dead ends: 1933 [2023-12-02 16:17:28,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3009 GetRequests, 2940 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 16:17:28,709 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 3058 mSDsluCounter, 17749 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3210 SdHoareTripleChecker+Valid, 18879 SdHoareTripleChecker+Invalid, 4058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:28,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3210 Valid, 18879 Invalid, 4058 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [884 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-02 16:17:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2023-12-02 16:17:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1924. [2023-12-02 16:17:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1848 states have (on average 1.1704545454545454) internal successors, (2163), 1860 states have internal predecessors, (2163), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2023-12-02 16:17:28,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2323 transitions. [2023-12-02 16:17:28,773 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2323 transitions. Word has length 496 [2023-12-02 16:17:28,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:28,773 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2323 transitions. [2023-12-02 16:17:28,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 31.441176470588236) internal successors, (1069), 36 states have internal predecessors, (1069), 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 16:17:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2323 transitions. [2023-12-02 16:17:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2023-12-02 16:17:28,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:28,793 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] [2023-12-02 16:17:28,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 16:17:29,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-02 16:17:29,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-02 16:17:29,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:17:29,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 16:17:29,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -209094737, now seen corresponding path program 3 times [2023-12-02 16:17:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:17:29,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315713533] [2023-12-02 16:17:29,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:17:29,399 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 16:17:29,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:17:29,400 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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 16:17:29,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acdbf31b-4c7a-484d-938d-e7c496d13f99/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