./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:16:17,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:16:17,545 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 17:16:17,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:16:17,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:16:17,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:16:17,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:16:17,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:16:17,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:16:17,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:16:17,577 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:16:17,577 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:16:17,578 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:16:17,578 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:16:17,578 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:16:17,579 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:16:17,579 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:16:17,580 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:16:17,580 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:16:17,581 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:16:17,581 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:16:17,582 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:16:17,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:16:17,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:16:17,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:16:17,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:16:17,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:16:17,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:16:17,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:16:17,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:16:17,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:16:17,586 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:16:17,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:16:17,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:16:17,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:16:17,588 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:16:17,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:16:17,588 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:16:17,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:16:17,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:16:17,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:16:17,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:16:17,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:16:17,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:16:17,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:16:17,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:16:17,590 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:16:17,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:16:17,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:16:17,591 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:16:17,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:16:17,591 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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2023-12-02 17:16:17,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:16:17,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:16:17,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:16:17,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:16:17,856 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:16:17,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-12-02 17:16:20,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:16:20,801 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:16:20,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-12-02 17:16:20,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/330c5eeb3/d950cc967a234f568ec1e4e71d893e09/FLAGbd93a3f0d [2023-12-02 17:16:20,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/330c5eeb3/d950cc967a234f568ec1e4e71d893e09 [2023-12-02 17:16:20,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:16:20,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:16:20,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:16:20,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:16:20,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:16:20,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:16:20" (1/1) ... [2023-12-02 17:16:20,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f01328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:20, skipping insertion in model container [2023-12-02 17:16:20,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:16:20" (1/1) ... [2023-12-02 17:16:20,950 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:16:21,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:16:21,396 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 17:16:21,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b483fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:21, skipping insertion in model container [2023-12-02 17:16:21,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:16:21,397 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 17:16:21,399 INFO L158 Benchmark]: Toolchain (without parser) took 557.72ms. Allocated memory is still 159.4MB. Free memory was 122.0MB in the beginning and 113.6MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:16:21,400 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:16:21,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.91ms. Allocated memory is still 159.4MB. Free memory was 122.0MB in the beginning and 113.6MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:16:21,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.91ms. Allocated memory is still 159.4MB. Free memory was 122.0MB in the beginning and 113.6MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 739]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:16:23,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:16:23,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 17:16:23,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:16:23,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:16:23,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:16:23,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:16:23,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:16:23,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:16:23,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:16:23,320 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:16:23,321 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:16:23,321 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:16:23,322 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:16:23,322 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:16:23,323 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:16:23,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 17:16:23,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 17:16:23,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:16:23,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:16:23,326 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:16:23,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:16:23,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:16:23,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:16:23,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:16:23,329 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 17:16:23,329 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 17:16:23,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:16:23,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:16:23,330 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:16:23,331 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:16:23,331 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:16:23,331 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:16:23,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:16:23,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:16:23,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:16:23,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:16:23,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:16:23,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:16:23,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:16:23,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:16:23,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:16:23,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:16:23,334 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:16:23,334 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:16:23,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:16:23,335 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:16:23,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:16:23,335 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_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2023-12-02 17:16:23,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:16:23,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:16:23,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:16:23,669 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:16:23,669 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:16:23,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-12-02 17:16:26,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:16:26,729 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:16:26,730 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-12-02 17:16:26,748 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/eabc9a8ab/4639c9b60d314988a808903225a43195/FLAGafaa6ef13 [2023-12-02 17:16:26,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/data/eabc9a8ab/4639c9b60d314988a808903225a43195 [2023-12-02 17:16:26,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:16:26,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:16:26,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:16:26,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:16:26,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:16:26,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:16:26" (1/1) ... [2023-12-02 17:16:26,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15218d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:26, skipping insertion in model container [2023-12-02 17:16:26,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:16:26" (1/1) ... [2023-12-02 17:16:26,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:16:27,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:16:27,289 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 17:16:27,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:16:27,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:16:27,395 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:16:27,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:16:27,529 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:16:27,536 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:16:27,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27 WrapperNode [2023-12-02 17:16:27,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:16:27,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:16:27,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:16:27,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:16:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,635 INFO L138 Inliner]: procedures = 180, calls = 282, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1016 [2023-12-02 17:16:27,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:16:27,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:16:27,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:16:27,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:16:27,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:16:27,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:16:27,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:16:27,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:16:27,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (1/1) ... [2023-12-02 17:16:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:16:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:16:27,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:16:27,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:16:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 17:16:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:16:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:16:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:16:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 17:16:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 17:16:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 17:16:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:16:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:16:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:16:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:16:27,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:16:28,042 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:16:28,044 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:16:34,053 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:16:34,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:16:34,088 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 17:16:34,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:16:34 BoogieIcfgContainer [2023-12-02 17:16:34,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:16:34,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:16:34,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:16:34,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:16:34,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:16:26" (1/3) ... [2023-12-02 17:16:34,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b6496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:16:34, skipping insertion in model container [2023-12-02 17:16:34,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:16:27" (2/3) ... [2023-12-02 17:16:34,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b6496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:16:34, skipping insertion in model container [2023-12-02 17:16:34,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:16:34" (3/3) ... [2023-12-02 17:16:34,097 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-1.i [2023-12-02 17:16:34,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:16:34,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:16:34,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:16:34,172 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;@a945ff4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:16:34,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:16:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 188 states have (on average 1.675531914893617) internal successors, (315), 191 states have internal predecessors, (315), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:16:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:16:34,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:34,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:16:34,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:34,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash 820925, now seen corresponding path program 1 times [2023-12-02 17:16:34,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:34,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957491919] [2023-12-02 17:16:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:34,201 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 17:16:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:34,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:34,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:16:34,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:34,486 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_21| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21| (_ bv0 1))))) is different from true [2023-12-02 17:16:34,488 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 17:16:34,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:34,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:34,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957491919] [2023-12-02 17:16:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957491919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:34,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:34,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:16:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261442839] [2023-12-02 17:16:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:34,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 17:16:34,519 INFO L87 Difference]: Start difference. First operand has 198 states, 188 states have (on average 1.675531914893617) internal successors, (315), 191 states have internal predecessors, (315), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:16:36,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:37,875 INFO L93 Difference]: Finished difference Result 292 states and 383 transitions. [2023-12-02 17:16:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:37,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 17:16:37,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:37,890 INFO L225 Difference]: With dead ends: 292 [2023-12-02 17:16:37,891 INFO L226 Difference]: Without dead ends: 290 [2023-12-02 17:16:37,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 17:16:37,896 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 120 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:37,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 474 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 1 Unknown, 384 Unchecked, 3.3s Time] [2023-12-02 17:16:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-02 17:16:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2023-12-02 17:16:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 1.2994652406417113) internal successors, (243), 189 states have internal predecessors, (243), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:16:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2023-12-02 17:16:37,947 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 3 [2023-12-02 17:16:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:37,947 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2023-12-02 17:16:37,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:16:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2023-12-02 17:16:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 17:16:37,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:37,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:16:37,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:38,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:38,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1036606834, now seen corresponding path program 1 times [2023-12-02 17:16:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:38,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046825456] [2023-12-02 17:16:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:38,153 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 17:16:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:38,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:38,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:38,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:16:38,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:38,466 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22| (_ bv0 1))))) is different from true [2023-12-02 17:16:38,467 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 17:16:38,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:38,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046825456] [2023-12-02 17:16:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046825456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:38,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:38,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:16:38,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470369729] [2023-12-02 17:16:38,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:38,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 17:16:38,471 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:16:40,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:41,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:41,943 INFO L93 Difference]: Finished difference Result 291 states and 380 transitions. [2023-12-02 17:16:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 17:16:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:41,947 INFO L225 Difference]: With dead ends: 291 [2023-12-02 17:16:41,947 INFO L226 Difference]: Without dead ends: 289 [2023-12-02 17:16:41,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 17:16:41,949 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 112 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:41,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 474 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 1 Unknown, 379 Unchecked, 3.5s Time] [2023-12-02 17:16:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-02 17:16:41,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 265. [2023-12-02 17:16:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.3070866141732282) internal successors, (332), 256 states have internal predecessors, (332), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:16:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 346 transitions. [2023-12-02 17:16:41,969 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 346 transitions. Word has length 11 [2023-12-02 17:16:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:41,969 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 346 transitions. [2023-12-02 17:16:41,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:16:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 346 transitions. [2023-12-02 17:16:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 17:16:41,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:41,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:16:41,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:42,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:42,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:42,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 825176355, now seen corresponding path program 1 times [2023-12-02 17:16:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184567647] [2023-12-02 17:16:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:42,172 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 17:16:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:42,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:42,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:42,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:16:42,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:42,390 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 17:16:42,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:42,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:42,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184567647] [2023-12-02 17:16:42,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184567647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:42,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:42,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:16:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237078689] [2023-12-02 17:16:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:42,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:16:42,393 INFO L87 Difference]: Start difference. First operand 265 states and 346 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 17:16:44,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:46,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:47,071 INFO L93 Difference]: Finished difference Result 358 states and 464 transitions. [2023-12-02 17:16:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:16:47,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 14 [2023-12-02 17:16:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:47,076 INFO L225 Difference]: With dead ends: 358 [2023-12-02 17:16:47,076 INFO L226 Difference]: Without dead ends: 356 [2023-12-02 17:16:47,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:16:47,077 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 152 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:47,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 663 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 17:16:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-02 17:16:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2023-12-02 17:16:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 341 states have (on average 1.3049853372434017) internal successors, (445), 344 states have internal predecessors, (445), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:16:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 459 transitions. [2023-12-02 17:16:47,092 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 459 transitions. Word has length 14 [2023-12-02 17:16:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:47,093 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 459 transitions. [2023-12-02 17:16:47,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 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 17:16:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 459 transitions. [2023-12-02 17:16:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 17:16:47,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:47,096 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] [2023-12-02 17:16:47,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash -662988973, now seen corresponding path program 1 times [2023-12-02 17:16:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183189608] [2023-12-02 17:16:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:47,298 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 17:16:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:47,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:47,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:16:47,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:47,492 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 17:16:47,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:47,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183189608] [2023-12-02 17:16:47,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183189608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:47,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:47,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:16:47,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734602027] [2023-12-02 17:16:47,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:47,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:47,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:16:47,496 INFO L87 Difference]: Start difference. First operand 352 states and 459 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 17:16:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:47,622 INFO L93 Difference]: Finished difference Result 364 states and 447 transitions. [2023-12-02 17:16:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 50 [2023-12-02 17:16:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:47,625 INFO L225 Difference]: With dead ends: 364 [2023-12-02 17:16:47,625 INFO L226 Difference]: Without dead ends: 364 [2023-12-02 17:16:47,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 17:16:47,627 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:47,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 639 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:16:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-02 17:16:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2023-12-02 17:16:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 350 states have (on average 1.2285714285714286) internal successors, (430), 353 states have internal predecessors, (430), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 17:16:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 444 transitions. [2023-12-02 17:16:47,642 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 444 transitions. Word has length 50 [2023-12-02 17:16:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:47,643 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 444 transitions. [2023-12-02 17:16:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 17:16:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 444 transitions. [2023-12-02 17:16:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 17:16:47,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:47,645 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] [2023-12-02 17:16:47,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:47,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:47,849 INFO L85 PathProgramCache]: Analyzing trace with hash -247812281, now seen corresponding path program 1 times [2023-12-02 17:16:47,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43639439] [2023-12-02 17:16:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:47,850 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 17:16:47,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:47,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:47,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:48,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:16:48,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:48,092 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:16:48,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:16:48,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:16:48,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 17:16:48,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:16:48,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 17:16:48,251 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 17:16:48,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:48,251 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43639439] [2023-12-02 17:16:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43639439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:48,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:48,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:16:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326324634] [2023-12-02 17:16:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:48,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:16:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:16:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:16:48,254 INFO L87 Difference]: Start difference. First operand 361 states and 444 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 17:16:52,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:16:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:54,904 INFO L93 Difference]: Finished difference Result 315 states and 391 transitions. [2023-12-02 17:16:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:16:54,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 50 [2023-12-02 17:16:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:54,908 INFO L225 Difference]: With dead ends: 315 [2023-12-02 17:16:54,908 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 17:16:54,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:16:54,908 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 52 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:54,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 823 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 17:16:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 17:16:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-12-02 17:16:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 305 states have internal predecessors, (376), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:16:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2023-12-02 17:16:54,916 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 50 [2023-12-02 17:16:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:54,916 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2023-12-02 17:16:54,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 17:16:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2023-12-02 17:16:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 17:16:54,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:54,918 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] [2023-12-02 17:16:54,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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)] Forceful destruction successful, exit code 0 [2023-12-02 17:16:55,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:55,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:55,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1302577977, now seen corresponding path program 1 times [2023-12-02 17:16:55,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:55,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126812194] [2023-12-02 17:16:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:55,120 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 17:16:55,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:55,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:55,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 17:16:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:55,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:16:55,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:16:55,664 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:55,664 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:55,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126812194] [2023-12-02 17:16:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126812194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:55,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:55,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:16:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867807576] [2023-12-02 17:16:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:16:55,666 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:16:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:55,760 INFO L93 Difference]: Finished difference Result 320 states and 380 transitions. [2023-12-02 17:16:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:55,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-12-02 17:16:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:55,763 INFO L225 Difference]: With dead ends: 320 [2023-12-02 17:16:55,763 INFO L226 Difference]: Without dead ends: 320 [2023-12-02 17:16:55,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 17:16:55,764 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 43 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:55,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 603 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:16:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-02 17:16:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2023-12-02 17:16:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 308 states have (on average 1.1883116883116882) internal successors, (366), 311 states have internal predecessors, (366), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:16:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 378 transitions. [2023-12-02 17:16:55,775 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 378 transitions. Word has length 80 [2023-12-02 17:16:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:55,775 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 378 transitions. [2023-12-02 17:16:55,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:16:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 378 transitions. [2023-12-02 17:16:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 17:16:55,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:55,777 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] [2023-12-02 17:16:55,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 17:16:55,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:55,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:55,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:55,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2135273559, now seen corresponding path program 1 times [2023-12-02 17:16:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046231721] [2023-12-02 17:16:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:55,985 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 17:16:55,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:55,986 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:55,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:56,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:16:56,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 17:16:56,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:56,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:56,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046231721] [2023-12-02 17:16:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046231721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:56,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:56,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:16:56,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143432577] [2023-12-02 17:16:56,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:16:56,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:56,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:16:56,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:16:56,481 INFO L87 Difference]: Start difference. First operand 318 states and 378 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:16:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:56,575 INFO L93 Difference]: Finished difference Result 306 states and 358 transitions. [2023-12-02 17:16:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-12-02 17:16:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:56,578 INFO L225 Difference]: With dead ends: 306 [2023-12-02 17:16:56,578 INFO L226 Difference]: Without dead ends: 306 [2023-12-02 17:16:56,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:16:56,579 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 6 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:56,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 802 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:16:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-02 17:16:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-12-02 17:16:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 296 states have (on average 1.1689189189189189) internal successors, (346), 299 states have internal predecessors, (346), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:16:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 358 transitions. [2023-12-02 17:16:56,586 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 358 transitions. Word has length 80 [2023-12-02 17:16:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:56,587 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 358 transitions. [2023-12-02 17:16:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:16:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 358 transitions. [2023-12-02 17:16:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-02 17:16:56,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:56,588 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] [2023-12-02 17:16:56,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:56,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:56,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -559489583, now seen corresponding path program 1 times [2023-12-02 17:16:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467274499] [2023-12-02 17:16:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:56,794 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 17:16:56,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:56,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:56,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 17:16:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:57,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:16:57,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:16:57,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:57,336 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:57,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467274499] [2023-12-02 17:16:57,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467274499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:57,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:16:57,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:16:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806427768] [2023-12-02 17:16:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:57,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:57,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:57,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:16:57,338 INFO L87 Difference]: Start difference. First operand 306 states and 358 transitions. Second operand has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:16:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:16:57,423 INFO L93 Difference]: Finished difference Result 308 states and 361 transitions. [2023-12-02 17:16:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:16:57,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2023-12-02 17:16:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:16:57,427 INFO L225 Difference]: With dead ends: 308 [2023-12-02 17:16:57,427 INFO L226 Difference]: Without dead ends: 308 [2023-12-02 17:16:57,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 17:16:57,428 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:16:57,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 662 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:16:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-02 17:16:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-02 17:16:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 297 states have (on average 1.1717171717171717) internal successors, (348), 301 states have internal predecessors, (348), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 17:16:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 361 transitions. [2023-12-02 17:16:57,436 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 361 transitions. Word has length 80 [2023-12-02 17:16:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:16:57,437 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 361 transitions. [2023-12-02 17:16:57,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:16:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 361 transitions. [2023-12-02 17:16:57,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 17:16:57,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:16:57,438 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-12-02 17:16:57,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-02 17:16:57,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:57,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:16:57,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:16:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash 854059343, now seen corresponding path program 1 times [2023-12-02 17:16:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:16:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004777114] [2023-12-02 17:16:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:57,642 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 17:16:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:16:57,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:16:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:58,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:16:58,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:16:58,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:16:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:16:58,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:16:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004777114] [2023-12-02 17:16:58,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004777114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:16:58,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1681493483] [2023-12-02 17:16:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:16:58,209 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:16:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:16:58,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:16:58,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 17:16:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:16:58,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:16:58,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:16:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:16:58,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:16:58,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1681493483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:16:58,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:16:58,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 17:16:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664253623] [2023-12-02 17:16:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:16:58,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:16:58,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:16:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:16:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:16:58,941 INFO L87 Difference]: Start difference. First operand 308 states and 361 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:17:01,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:03,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:06,522 INFO L93 Difference]: Finished difference Result 406 states and 481 transitions. [2023-12-02 17:17:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:17:06,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2023-12-02 17:17:06,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:06,525 INFO L225 Difference]: With dead ends: 406 [2023-12-02 17:17:06,525 INFO L226 Difference]: Without dead ends: 406 [2023-12-02 17:17:06,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 236 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 17:17:06,526 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 430 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:06,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 379 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 17:17:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-02 17:17:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 397. [2023-12-02 17:17:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 385 states have (on average 1.1818181818181819) internal successors, (455), 390 states have internal predecessors, (455), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 17:17:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 470 transitions. [2023-12-02 17:17:06,535 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 470 transitions. Word has length 82 [2023-12-02 17:17:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:06,536 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 470 transitions. [2023-12-02 17:17:06,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:17:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 470 transitions. [2023-12-02 17:17:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 17:17:06,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:06,538 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-12-02 17:17:06,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 17:17:06,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:06,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:06,938 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:17:06,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:06,939 INFO L85 PathProgramCache]: Analyzing trace with hash -18531290, now seen corresponding path program 1 times [2023-12-02 17:17:06,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:06,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299227099] [2023-12-02 17:17:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:06,940 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 17:17:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:06,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:06,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:07,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:17:07,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:17:07,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:17:07,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:17:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299227099] [2023-12-02 17:17:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299227099] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [125028619] [2023-12-02 17:17:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:07,475 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:17:07,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:17:07,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 17:17:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:08,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:17:08,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:17:08,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:17:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [125028619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632718805] [2023-12-02 17:17:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:08,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:08,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:08,245 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:08,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:17:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:08,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:17:08,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:17:08,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:17:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632718805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:08,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:17:08,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 17:17:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806132553] [2023-12-02 17:17:08,776 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:17:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:17:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:17:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:17:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:17:08,778 INFO L87 Difference]: Start difference. First operand 397 states and 470 transitions. Second operand has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:17:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:09,119 INFO L93 Difference]: Finished difference Result 409 states and 489 transitions. [2023-12-02 17:17:09,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:17:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-12-02 17:17:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:09,124 INFO L225 Difference]: With dead ends: 409 [2023-12-02 17:17:09,124 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 17:17:09,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 17:17:09,125 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 18 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:09,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1308 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:17:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 17:17:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2023-12-02 17:17:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 394 states have (on average 1.1979695431472082) internal successors, (472), 399 states have internal predecessors, (472), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 17:17:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 487 transitions. [2023-12-02 17:17:09,137 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 487 transitions. Word has length 85 [2023-12-02 17:17:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:09,137 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 487 transitions. [2023-12-02 17:17:09,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:17:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 487 transitions. [2023-12-02 17:17:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 17:17:09,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:09,139 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 17:17:09,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:17:09,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 17:17:09,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:09,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:17:09,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1705896164, now seen corresponding path program 2 times [2023-12-02 17:17:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870987244] [2023-12-02 17:17:09,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:09,742 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 17:17:09,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:09,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:09,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:10,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:10,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:10,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:17:10,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:17:10,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:10,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:17:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870987244] [2023-12-02 17:17:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870987244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1407778142] [2023-12-02 17:17:10,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:10,530 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:17:10,531 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:17:10,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 17:17:11,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:11,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:11,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:17:11,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:17:11,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:11,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1407778142] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:11,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806043330] [2023-12-02 17:17:11,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:11,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:11,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:11,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:17:12,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:12,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:12,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:17:12,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:12,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:17:12,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:17:12,406 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:17:12,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 17:17:12,525 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:17:12,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 17:17:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 17:17:12,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:17:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806043330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:17:12,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 17:17:12,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 8, 8] total 18 [2023-12-02 17:17:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949878984] [2023-12-02 17:17:12,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:17:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:17:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:17:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:17:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:17:12,567 INFO L87 Difference]: Start difference. First operand 407 states and 487 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 17:17:15,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:17:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:17,788 INFO L93 Difference]: Finished difference Result 489 states and 586 transitions. [2023-12-02 17:17:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:17:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 91 [2023-12-02 17:17:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:17,792 INFO L225 Difference]: With dead ends: 489 [2023-12-02 17:17:17,792 INFO L226 Difference]: Without dead ends: 489 [2023-12-02 17:17:17,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:17:17,793 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 527 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:17,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 567 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-12-02 17:17:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-12-02 17:17:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 409. [2023-12-02 17:17:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 396 states have (on average 1.196969696969697) internal successors, (474), 401 states have internal predecessors, (474), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 17:17:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 489 transitions. [2023-12-02 17:17:17,806 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 489 transitions. Word has length 91 [2023-12-02 17:17:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:17,807 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 489 transitions. [2023-12-02 17:17:17,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 17:17:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 489 transitions. [2023-12-02 17:17:17,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 17:17:17,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:17,809 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 17:17:17,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:18,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:17:18,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 17:17:18,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:18,410 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:17:18,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1500504018, now seen corresponding path program 1 times [2023-12-02 17:17:18,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:18,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027262434] [2023-12-02 17:17:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:18,411 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 17:17:18,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:18,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:18,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:18,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:17:18,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:17:19,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:19,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:17:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027262434] [2023-12-02 17:17:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027262434] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:19,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [250637758] [2023-12-02 17:17:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:19,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:17:19,251 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:17:19,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 17:17:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:20,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:17:20,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:17:20,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:20,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [250637758] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099719652] [2023-12-02 17:17:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:20,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:20,275 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:20,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:17:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:17:20,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:17:20,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:17:20,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 17:17:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099719652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:21,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:17:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 17:17:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357472644] [2023-12-02 17:17:21,163 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:17:21,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 17:17:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:17:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 17:17:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 17:17:21,165 INFO L87 Difference]: Start difference. First operand 409 states and 489 transitions. Second operand has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 17:17:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:21,983 INFO L93 Difference]: Finished difference Result 422 states and 506 transitions. [2023-12-02 17:17:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 17:17:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-12-02 17:17:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:21,985 INFO L225 Difference]: With dead ends: 422 [2023-12-02 17:17:21,985 INFO L226 Difference]: Without dead ends: 419 [2023-12-02 17:17:21,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 17:17:21,986 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 12 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:21,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1314 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 17:17:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-12-02 17:17:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2023-12-02 17:17:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 403 states have (on average 1.1935483870967742) internal successors, (481), 408 states have internal predecessors, (481), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 17:17:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 496 transitions. [2023-12-02 17:17:21,998 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 496 transitions. Word has length 135 [2023-12-02 17:17:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:21,999 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 496 transitions. [2023-12-02 17:17:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 17:17:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 496 transitions. [2023-12-02 17:17:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 17:17:22,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:22,001 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2023-12-02 17:17:22,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 17:17:22,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-02 17:17:22,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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)] Ended with exit code 0 [2023-12-02 17:17:22,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:22,602 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:17:22,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1514495772, now seen corresponding path program 2 times [2023-12-02 17:17:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:22,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514964992] [2023-12-02 17:17:22,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:22,604 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 17:17:22,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:22,604 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:22,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 17:17:23,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:23,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:23,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:17:23,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 17:17:23,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:24,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:17:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514964992] [2023-12-02 17:17:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514964992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [896998007] [2023-12-02 17:17:24,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:17:24,046 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:17:24,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 17:17:25,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:25,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:25,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:17:25,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 17:17:25,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:17:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [896998007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:26,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750627925] [2023-12-02 17:17:26,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 17:17:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:17:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:26,019 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:17:26,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:17:26,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 17:17:26,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:26,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:17:26,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:17:26,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 17:17:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750627925] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:27,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 17:17:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 9, 9] total 35 [2023-12-02 17:17:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645538472] [2023-12-02 17:17:27,299 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 17:17:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 17:17:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:17:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 17:17:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 17:17:27,301 INFO L87 Difference]: Start difference. First operand 416 states and 496 transitions. Second operand has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:17:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:17:30,760 INFO L93 Difference]: Finished difference Result 452 states and 553 transitions. [2023-12-02 17:17:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 17:17:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 142 [2023-12-02 17:17:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:17:30,764 INFO L225 Difference]: With dead ends: 452 [2023-12-02 17:17:30,764 INFO L226 Difference]: Without dead ends: 449 [2023-12-02 17:17:30,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1869, Invalid=5441, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 17:17:30,767 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 60 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:17:30,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3897 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 17:17:30,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-02 17:17:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 440. [2023-12-02 17:17:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 427 states have (on average 1.2084309133489461) internal successors, (516), 432 states have internal predecessors, (516), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 17:17:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 531 transitions. [2023-12-02 17:17:30,781 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 531 transitions. Word has length 142 [2023-12-02 17:17:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:17:30,781 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 531 transitions. [2023-12-02 17:17:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:17:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 531 transitions. [2023-12-02 17:17:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 17:17:30,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:30,784 INFO L195 NwaCegarLoop]: trace histogram [39, 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] [2023-12-02 17:17:30,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 17:17:30,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 17:17:31,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 17:17:31,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:31,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 17:17:31,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1358530716, now seen corresponding path program 3 times [2023-12-02 17:17:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597005603] [2023-12-02 17:17:31,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:17:31,386 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 17:17:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:31,387 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/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 17:17:31,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 17:17:37,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 17:17:37,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:17:37,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:17:37,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:17:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 17:17:37,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:17:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 17:17:39,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:17:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597005603] [2023-12-02 17:17:39,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597005603] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:17:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089679219] [2023-12-02 17:17:39,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:17:39,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:17:39,306 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:17:39,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 17:24:29,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 17:24:29,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:24:30,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:24:30,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:24:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 17:24:30,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:24:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 17:24:30,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1089679219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:24:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628535485] [2023-12-02 17:24:30,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:24:30,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:24:30,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:24:30,472 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:24:30,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dec2e799-7bdd-4a87-bc96-ee96d6452a95/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process