./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire --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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:45,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:45,745 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-23 21:22:45,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:45,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:45,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:45,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:45,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:45,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:45,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:45,796 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:45,797 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:45,798 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:45,799 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:45,800 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:45,800 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:45,801 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:45,801 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:45,802 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:45,802 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:45,803 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:45,803 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:45,804 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:22:45,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:22:45,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:45,806 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:45,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:45,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:45,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:45,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:45,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:45,809 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:22:45,810 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:22:45,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:45,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:45,833 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:45,833 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:22:45,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:45,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:45,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:45,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:45,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:45,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:45,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:45,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:45,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:45,836 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:45,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:45,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:45,836 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:45,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:45,837 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_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2023-11-23 21:22:46,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:46,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:46,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:46,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:46,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:46,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2023-11-23 21:22:49,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:49,435 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:49,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2023-11-23 21:22:49,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/09b7101be/0dc98d162bed44cfbccf3da077934f65/FLAG152a85f1a [2023-11-23 21:22:49,504 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/09b7101be/0dc98d162bed44cfbccf3da077934f65 [2023-11-23 21:22:49,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:49,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:49,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:49,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:49,526 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:49,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:49" (1/1) ... [2023-11-23 21:22:49,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257b5f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:49, skipping insertion in model container [2023-11-23 21:22:49,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:49" (1/1) ... [2023-11-23 21:22:49,625 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:50,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:50,560 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:22:50,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f4d86b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:50, skipping insertion in model container [2023-11-23 21:22:50,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:50,561 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:22:50,563 INFO L158 Benchmark]: Toolchain (without parser) took 1046.29ms. Allocated memory is still 153.1MB. Free memory was 102.2MB in the beginning and 79.2MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:50,564 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 153.1MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:22:50,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1041.04ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 79.2MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:22:50,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 153.1MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1041.04ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 79.2MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire --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 d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:53,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:53,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-23 21:22:53,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:53,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:53,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:53,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:53,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:53,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:53,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:53,137 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:53,138 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:53,138 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:53,140 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:53,140 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:53,141 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:53,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:22:53,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:22:53,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:53,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:53,144 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:53,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:53,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:53,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:53,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:53,146 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:22:53,147 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:22:53,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:53,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:53,148 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:22:53,150 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:22:53,150 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:22:53,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:22:53,151 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:53,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:53,151 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:53,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:53,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:22:53,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:53,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:53,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:53,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:53,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:53,155 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:22:53,156 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:22:53,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:53,180 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:53,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:53,180 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_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2023-11-23 21:22:53,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:53,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:53,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:53,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:53,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:53,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2023-11-23 21:22:57,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:57,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:57,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2023-11-23 21:22:57,598 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/acb99bea8/baffa226a6e34fff97d911cd3275eb48/FLAGabd5b9c5e [2023-11-23 21:22:57,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/data/acb99bea8/baffa226a6e34fff97d911cd3275eb48 [2023-11-23 21:22:57,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:57,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:57,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:57,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:57,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:57,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:57" (1/1) ... [2023-11-23 21:22:57,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5304be42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:57, skipping insertion in model container [2023-11-23 21:22:57,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:57" (1/1) ... [2023-11-23 21:22:57,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:58,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:58,767 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:22:58,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:58,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:58,879 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:58,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:59,073 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:59,080 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:59,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59 WrapperNode [2023-11-23 21:22:59,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:59,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:59,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:59,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:59,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,243 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1207 [2023-11-23 21:22:59,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:59,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:59,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:59,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:59,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:59,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:59,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:59,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:59,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (1/1) ... [2023-11-23 21:22:59,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:59,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:59,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:59,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:22:59,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:22:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:22:59,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:22:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-23 21:22:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-23 21:22:59,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:22:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:22:59,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-23 21:22:59,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-23 21:22:59,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:59,445 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-23 21:22:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-23 21:22:59,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:59,750 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:59,752 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:23:06,710 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:23:06,763 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:23:06,763 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-23 21:23:06,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:06 BoogieIcfgContainer [2023-11-23 21:23:06,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:23:06,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:23:06,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:23:06,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:23:06,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:57" (1/3) ... [2023-11-23 21:23:06,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276cfe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:06, skipping insertion in model container [2023-11-23 21:23:06,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:59" (2/3) ... [2023-11-23 21:23:06,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276cfe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:06, skipping insertion in model container [2023-11-23 21:23:06,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:06" (3/3) ... [2023-11-23 21:23:06,773 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2023-11-23 21:23:06,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:23:06,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:23:06,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:23:06,853 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;@28e648bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:23:06,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:23:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 232 states have (on average 1.6336206896551724) internal successors, (379), 237 states have internal predecessors, (379), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:23:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:23:06,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:06,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:06,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:06,875 INFO L85 PathProgramCache]: Analyzing trace with hash -711634754, now seen corresponding path program 1 times [2023-11-23 21:23:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:06,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441800500] [2023-11-23 21:23:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:06,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:06,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:06,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:23:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:07,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:23:07,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:07,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:07,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441800500] [2023-11-23 21:23:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441800500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:07,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:07,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036185897] [2023-11-23 21:23:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:23:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:23:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:23:07,187 INFO L87 Difference]: Start difference. First operand has 259 states, 232 states have (on average 1.6336206896551724) internal successors, (379), 237 states have internal predecessors, (379), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:07,308 INFO L93 Difference]: Finished difference Result 254 states and 332 transitions. [2023-11-23 21:23:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:23:07,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 21:23:07,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:07,323 INFO L225 Difference]: With dead ends: 254 [2023-11-23 21:23:07,324 INFO L226 Difference]: Without dead ends: 253 [2023-11-23 21:23:07,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:23:07,329 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:07,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-23 21:23:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-11-23 21:23:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 228 states have (on average 1.3026315789473684) internal successors, (297), 233 states have internal predecessors, (297), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:23:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 331 transitions. [2023-11-23 21:23:07,421 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 331 transitions. Word has length 9 [2023-11-23 21:23:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:07,422 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 331 transitions. [2023-11-23 21:23:07,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:07,423 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 331 transitions. [2023-11-23 21:23:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:23:07,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:07,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:07,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Ended with exit code 0 [2023-11-23 21:23:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:07,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:07,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1093340257, now seen corresponding path program 1 times [2023-11-23 21:23:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:07,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378827966] [2023-11-23 21:23:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:07,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:07,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:23:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:07,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:07,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:08,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:08,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:08,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378827966] [2023-11-23 21:23:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378827966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:08,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:08,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638169659] [2023-11-23 21:23:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:08,046 INFO L87 Difference]: Start difference. First operand 253 states and 331 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:10,583 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 [] [2023-11-23 21:23:13,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:13,521 INFO L93 Difference]: Finished difference Result 410 states and 539 transitions. [2023-11-23 21:23:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:13,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2023-11-23 21:23:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:13,526 INFO L225 Difference]: With dead ends: 410 [2023-11-23 21:23:13,526 INFO L226 Difference]: Without dead ends: 410 [2023-11-23 21:23:13,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:13,528 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 199 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:13,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 910 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-23 21:23:13,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-23 21:23:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 370. [2023-11-23 21:23:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 342 states have (on average 1.304093567251462) internal successors, (446), 347 states have internal predecessors, (446), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:23:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 486 transitions. [2023-11-23 21:23:13,556 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 486 transitions. Word has length 11 [2023-11-23 21:23:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:13,556 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 486 transitions. [2023-11-23 21:23:13,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 486 transitions. [2023-11-23 21:23:13,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:23:13,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:13,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:13,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:13,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:13,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:13,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash -2126280651, now seen corresponding path program 1 times [2023-11-23 21:23:13,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:13,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736356714] [2023-11-23 21:23:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:13,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:13,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:13,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:13,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:23:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:23:14,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:14,179 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2023-11-23 21:23:14,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 102 [2023-11-23 21:23:14,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,204 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 39 [2023-11-23 21:23:14,349 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:23:14,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 39 [2023-11-23 21:23:14,506 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:23:14,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2023-11-23 21:23:14,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:23:14,621 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 [2023-11-23 21:23:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:14,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:14,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736356714] [2023-11-23 21:23:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736356714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:14,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673049564] [2023-11-23 21:23:14,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:14,646 INFO L87 Difference]: Start difference. First operand 370 states and 486 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:18,478 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 [] [2023-11-23 21:23:21,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:23:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:23,124 INFO L93 Difference]: Finished difference Result 494 states and 656 transitions. [2023-11-23 21:23:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:23,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-23 21:23:23,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:23,129 INFO L225 Difference]: With dead ends: 494 [2023-11-23 21:23:23,129 INFO L226 Difference]: Without dead ends: 494 [2023-11-23 21:23:23,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:23,131 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 181 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:23,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 855 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 21:23:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-23 21:23:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 369. [2023-11-23 21:23:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 341 states have (on average 1.3020527859237536) internal successors, (444), 346 states have internal predecessors, (444), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:23:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 484 transitions. [2023-11-23 21:23:23,157 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 484 transitions. Word has length 14 [2023-11-23 21:23:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:23,158 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 484 transitions. [2023-11-23 21:23:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 484 transitions. [2023-11-23 21:23:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:23:23,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:23,161 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] [2023-11-23 21:23:23,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:23:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:23,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:23,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash -130810140, now seen corresponding path program 1 times [2023-11-23 21:23:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112494128] [2023-11-23 21:23:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:23,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:23,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:23,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:23,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:23:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:23,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:23,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:23,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:23,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112494128] [2023-11-23 21:23:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112494128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:23,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566122547] [2023-11-23 21:23:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:23,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:23,843 INFO L87 Difference]: Start difference. First operand 369 states and 484 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:24,069 INFO L93 Difference]: Finished difference Result 377 states and 476 transitions. [2023-11-23 21:23:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-23 21:23:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:24,073 INFO L225 Difference]: With dead ends: 377 [2023-11-23 21:23:24,073 INFO L226 Difference]: Without dead ends: 377 [2023-11-23 21:23:24,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:24,076 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 36 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:24,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 858 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-23 21:23:24,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2023-11-23 21:23:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 347 states have (on average 1.2507204610951008) internal successors, (434), 352 states have internal predecessors, (434), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:23:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 474 transitions. [2023-11-23 21:23:24,116 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 474 transitions. Word has length 48 [2023-11-23 21:23:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:24,117 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 474 transitions. [2023-11-23 21:23:24,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 474 transitions. [2023-11-23 21:23:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:23:24,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:24,121 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] [2023-11-23 21:23:24,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:24,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:24,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:24,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 323773912, now seen corresponding path program 1 times [2023-11-23 21:23:24,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:24,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555812014] [2023-11-23 21:23:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:24,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:24,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:23:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:24,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:24,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:24,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:24,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555812014] [2023-11-23 21:23:24,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555812014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:24,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:24,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:23:24,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226170374] [2023-11-23 21:23:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:24,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:23:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:23:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:24,808 INFO L87 Difference]: Start difference. First operand 375 states and 474 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:25,086 INFO L93 Difference]: Finished difference Result 384 states and 483 transitions. [2023-11-23 21:23:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:23:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-23 21:23:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:25,090 INFO L225 Difference]: With dead ends: 384 [2023-11-23 21:23:25,090 INFO L226 Difference]: Without dead ends: 384 [2023-11-23 21:23:25,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:23:25,091 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 11 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:25,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1530 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-23 21:23:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2023-11-23 21:23:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 353 states have (on average 1.2492917847025495) internal successors, (441), 359 states have internal predecessors, (441), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-23 21:23:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 483 transitions. [2023-11-23 21:23:25,107 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 483 transitions. Word has length 48 [2023-11-23 21:23:25,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:25,108 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 483 transitions. [2023-11-23 21:23:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:23:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 483 transitions. [2023-11-23 21:23:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:23:25,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:25,110 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:25,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-23 21:23:25,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:25,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:25,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash -441157344, now seen corresponding path program 1 times [2023-11-23 21:23:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964243287] [2023-11-23 21:23:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:25,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:25,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:25,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:25,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:23:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:25,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:25,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:26,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:26,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964243287] [2023-11-23 21:23:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964243287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:23:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796292326] [2023-11-23 21:23:26,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:26,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:23:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:23:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:26,090 INFO L87 Difference]: Start difference. First operand 384 states and 483 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:26,497 INFO L93 Difference]: Finished difference Result 390 states and 491 transitions. [2023-11-23 21:23:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:23:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2023-11-23 21:23:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:26,502 INFO L225 Difference]: With dead ends: 390 [2023-11-23 21:23:26,502 INFO L226 Difference]: Without dead ends: 390 [2023-11-23 21:23:26,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:26,503 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 17 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:26,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1126 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:23:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-11-23 21:23:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2023-11-23 21:23:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 354 states have (on average 1.2485875706214689) internal successors, (442), 361 states have internal predecessors, (442), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2023-11-23 21:23:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 487 transitions. [2023-11-23 21:23:26,520 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 487 transitions. Word has length 60 [2023-11-23 21:23:26,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:26,521 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 487 transitions. [2023-11-23 21:23:26,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:26,521 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 487 transitions. [2023-11-23 21:23:26,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:23:26,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:26,522 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] [2023-11-23 21:23:26,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:26,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:26,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:26,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 468705426, now seen corresponding path program 1 times [2023-11-23 21:23:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:26,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639643400] [2023-11-23 21:23:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:26,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:26,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:26,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:23:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:27,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:27,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:27,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:27,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639643400] [2023-11-23 21:23:27,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639643400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183548637] [2023-11-23 21:23:27,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:27,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:27,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:27,318 INFO L87 Difference]: Start difference. First operand 387 states and 487 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:23:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:27,483 INFO L93 Difference]: Finished difference Result 389 states and 490 transitions. [2023-11-23 21:23:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2023-11-23 21:23:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:27,487 INFO L225 Difference]: With dead ends: 389 [2023-11-23 21:23:27,487 INFO L226 Difference]: Without dead ends: 389 [2023-11-23 21:23:27,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:27,488 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 0 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:27,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 922 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:27,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-23 21:23:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-11-23 21:23:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 355 states have (on average 1.2507042253521128) internal successors, (444), 363 states have internal predecessors, (444), 24 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2023-11-23 21:23:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 490 transitions. [2023-11-23 21:23:27,504 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 490 transitions. Word has length 65 [2023-11-23 21:23:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:27,505 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 490 transitions. [2023-11-23 21:23:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:23:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 490 transitions. [2023-11-23 21:23:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:23:27,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:27,507 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] [2023-11-23 21:23:27,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:27,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:27,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash -638364359, now seen corresponding path program 1 times [2023-11-23 21:23:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691398466] [2023-11-23 21:23:27,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:27,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:27,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:27,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:23:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:28,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:23:28,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:28,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:23:28,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691398466] [2023-11-23 21:23:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691398466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [613896821] [2023-11-23 21:23:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:28,472 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:23:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:23:28,489 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:23:28,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-23 21:23:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:29,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:23:29,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:29,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:29,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [613896821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054215629] [2023-11-23 21:23:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:29,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:29,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:29,864 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:29,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:23:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:30,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:30,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:30,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054215629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:23:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 7, 7] total 18 [2023-11-23 21:23:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660478252] [2023-11-23 21:23:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:23:30,437 INFO L87 Difference]: Start difference. First operand 389 states and 490 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:30,883 INFO L93 Difference]: Finished difference Result 1037 states and 1326 transitions. [2023-11-23 21:23:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2023-11-23 21:23:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:30,892 INFO L225 Difference]: With dead ends: 1037 [2023-11-23 21:23:30,892 INFO L226 Difference]: Without dead ends: 1037 [2023-11-23 21:23:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:23:30,893 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 587 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:30,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1600 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:23:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-23 21:23:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 951. [2023-11-23 21:23:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 883 states have (on average 1.2672706681766703) internal successors, (1119), 897 states have internal predecessors, (1119), 48 states have call successors, (48), 14 states have call predecessors, (48), 18 states have return successors, (50), 39 states have call predecessors, (50), 44 states have call successors, (50) [2023-11-23 21:23:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1217 transitions. [2023-11-23 21:23:30,942 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1217 transitions. Word has length 66 [2023-11-23 21:23:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:30,943 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1217 transitions. [2023-11-23 21:23:30,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1217 transitions. [2023-11-23 21:23:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 21:23:30,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:30,946 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2023-11-23 21:23:30,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:31,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:31,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:31,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:31,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:23:31,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1434980608, now seen corresponding path program 1 times [2023-11-23 21:23:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:23:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671378296] [2023-11-23 21:23:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:23:31,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:23:31,557 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:23:31,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:23:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:32,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:23:32,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:23:32,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:23:32,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:23:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671378296] [2023-11-23 21:23:32,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671378296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:32,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1698203147] [2023-11-23 21:23:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:32,450 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:23:32,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:23:32,451 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:23:32,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-23 21:23:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:33,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:23:33,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:23:33,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:23:34,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1698203147] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:34,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571299611] [2023-11-23 21:23:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:34,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:34,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:34,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b095cc48-ccdf-4a17-b411-b3b7faddc71c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:23:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:34,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:23:34,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:23:34,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:23:35,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571299611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:23:35,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:23:35,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 10, 5, 5] total 25 [2023-11-23 21:23:35,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844196350] [2023-11-23 21:23:35,190 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:23:35,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 21:23:35,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:23:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 21:23:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:23:35,193 INFO L87 Difference]: Start difference. First operand 951 states and 1217 transitions. Second operand has 25 states, 22 states have (on average 10.045454545454545) internal successors, (221), 22 states have internal predecessors, (221), 10 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (22), 8 states have call predecessors, (22), 10 states have call successors, (22)