./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:27:48,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:27:48,525 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 14:27:48,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:27:48,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:27:48,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:27:48,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:27:48,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:27:48,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:27:48,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:27:48,556 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:27:48,557 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:27:48,557 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:27:48,558 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:27:48,558 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:27:48,559 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:27:48,559 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:27:48,560 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:27:48,560 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:27:48,561 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:27:48,562 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:27:48,562 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:27:48,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:27:48,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:27:48,564 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:27:48,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:27:48,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:27:48,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:27:48,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:27:48,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:27:48,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:27:48,567 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:27:48,567 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:27:48,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:27:48,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:27:48,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:27:48,568 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:27:48,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:27:48,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:27:48,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:27:48,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:27:48,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:27:48,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:27:48,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:27:48,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:27:48,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:27:48,570 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:27:48,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:27:48,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:27:48,570 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:27:48,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:27:48,571 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_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2023-12-02 14:27:48,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:27:48,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:27:48,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:27:48,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:27:48,838 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:27:48,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-12-02 14:27:51,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:27:51,866 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:27:51,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-12-02 14:27:51,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/b3c81dcd6/2ca55ae2227e4d7581493e06aba104dc/FLAG06705d98b [2023-12-02 14:27:51,896 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/b3c81dcd6/2ca55ae2227e4d7581493e06aba104dc [2023-12-02 14:27:51,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:27:51,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:27:51,900 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:27:51,900 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:27:51,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:27:51,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:27:51" (1/1) ... [2023-12-02 14:27:51,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c837d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:51, skipping insertion in model container [2023-12-02 14:27:51,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:27:51" (1/1) ... [2023-12-02 14:27:51,967 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:27:52,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:27:52,437 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-12-02 14:27:52,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56f4b1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:52, skipping insertion in model container [2023-12-02 14:27:52,438 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:27:52,439 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 14:27:52,440 INFO L158 Benchmark]: Toolchain (without parser) took 540.65ms. Allocated memory is still 134.2MB. Free memory was 91.4MB in the beginning and 67.2MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 14:27:52,441 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:27:52,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.60ms. Allocated memory is still 134.2MB. Free memory was 91.4MB in the beginning and 67.2MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 14:27:52,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.60ms. Allocated memory is still 134.2MB. Free memory was 91.4MB in the beginning and 67.2MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:27:54,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:27:54,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 14:27:54,311 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:27:54,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:27:54,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:27:54,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:27:54,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:27:54,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:27:54,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:27:54,342 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:27:54,343 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:27:54,343 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:27:54,344 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:27:54,344 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:27:54,345 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:27:54,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:27:54,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:27:54,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:27:54,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:27:54,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:27:54,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:27:54,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:27:54,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:27:54,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:27:54,350 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:27:54,350 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:27:54,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:27:54,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:27:54,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:27:54,352 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:27:54,352 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:27:54,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:27:54,353 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:27:54,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:27:54,354 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:27:54,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:27:54,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:27:54,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:27:54,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:27:54,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:27:54,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:27:54,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:27:54,355 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:27:54,356 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:27:54,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:27:54,356 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:27:54,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:27:54,356 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_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2023-12-02 14:27:54,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:27:54,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:27:54,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:27:54,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:27:54,703 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:27:54,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-12-02 14:27:57,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:27:57,831 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:27:57,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2023-12-02 14:27:57,850 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/580d4b558/8427c793682c4a7d9004fd01fb5398f1/FLAG1f18eaa89 [2023-12-02 14:27:57,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/data/580d4b558/8427c793682c4a7d9004fd01fb5398f1 [2023-12-02 14:27:57,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:27:57,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:27:57,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:27:57,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:27:57,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:27:57,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:27:57" (1/1) ... [2023-12-02 14:27:57,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bb25ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:57, skipping insertion in model container [2023-12-02 14:27:57,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:27:57" (1/1) ... [2023-12-02 14:27:57,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:27:58,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:27:58,513 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 14:27:58,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:27:58,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:27:58,639 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:27:58,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:27:58,778 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:27:58,786 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:27:58,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58 WrapperNode [2023-12-02 14:27:58,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:27:58,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:27:58,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:27:58,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:27:58,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:58,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:58,912 INFO L138 Inliner]: procedures = 180, calls = 489, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1705 [2023-12-02 14:27:58,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:27:58,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:27:58,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:27:58,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:27:58,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:58,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:58,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:58,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:27:59,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:27:59,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:27:59,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:27:59,057 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (1/1) ... [2023-12-02 14:27:59,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:27:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:27:59,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:27:59,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:27:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 14:27:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 14:27:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 14:27:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 14:27:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:27:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:27:59,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:27:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 14:27:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:27:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:27:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:27:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:27:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:27:59,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:27:59,374 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:27:59,376 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:28:11,408 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:28:11,453 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:28:11,453 INFO L309 CfgBuilder]: Removed 100 assume(true) statements. [2023-12-02 14:28:11,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:28:11 BoogieIcfgContainer [2023-12-02 14:28:11,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:28:11,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:28:11,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:28:11,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:28:11,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:27:57" (1/3) ... [2023-12-02 14:28:11,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2883b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:28:11, skipping insertion in model container [2023-12-02 14:28:11,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:27:58" (2/3) ... [2023-12-02 14:28:11,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b2883b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:28:11, skipping insertion in model container [2023-12-02 14:28:11,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:28:11" (3/3) ... [2023-12-02 14:28:11,463 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2023-12-02 14:28:11,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:28:11,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:28:11,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:28:11,540 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;@438b9f55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:28:11,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:28:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:28:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 14:28:11,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:11,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:11,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:11,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:11,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1452692516, now seen corresponding path program 1 times [2023-12-02 14:28:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26957190] [2023-12-02 14:28:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:11,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:11,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:11,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 14:28:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:11,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 14:28:11,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:28:11,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:11,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26957190] [2023-12-02 14:28:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26957190] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:11,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:28:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725445894] [2023-12-02 14:28:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:28:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:11,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:28:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:28:11,884 INFO L87 Difference]: Start difference. First operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:11,941 INFO L93 Difference]: Finished difference Result 316 states and 417 transitions. [2023-12-02 14:28:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:28:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-02 14:28:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:11,956 INFO L225 Difference]: With dead ends: 316 [2023-12-02 14:28:11,956 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 14:28:11,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:28:11,962 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:11,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:28:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 14:28:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-02 14:28:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 298 states have (on average 1.3154362416107384) internal successors, (392), 305 states have internal predecessors, (392), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:28:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2023-12-02 14:28:12,027 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 416 transitions. Word has length 9 [2023-12-02 14:28:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:12,028 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 416 transitions. [2023-12-02 14:28:12,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 416 transitions. [2023-12-02 14:28:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:28:12,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:12,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:12,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:28:12,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:12,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:12,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1201787036, now seen corresponding path program 1 times [2023-12-02 14:28:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053248147] [2023-12-02 14:28:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:12,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:12,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:12,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 14:28:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:12,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:28:12,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:28:12,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:12,422 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053248147] [2023-12-02 14:28:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053248147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:28:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606340855] [2023-12-02 14:28:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:12,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:28:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:28:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:28:12,426 INFO L87 Difference]: Start difference. First operand 315 states and 416 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:12,741 INFO L93 Difference]: Finished difference Result 561 states and 744 transitions. [2023-12-02 14:28:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:28:12,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 14:28:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:12,746 INFO L225 Difference]: With dead ends: 561 [2023-12-02 14:28:12,746 INFO L226 Difference]: Without dead ends: 561 [2023-12-02 14:28:12,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:28:12,748 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 303 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:12,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:28:12,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-12-02 14:28:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 317. [2023-12-02 14:28:12,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 307 states have internal predecessors, (394), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:28:12,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 418 transitions. [2023-12-02 14:28:12,776 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 418 transitions. Word has length 10 [2023-12-02 14:28:12,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:12,776 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 418 transitions. [2023-12-02 14:28:12,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 418 transitions. [2023-12-02 14:28:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 14:28:12,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:12,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:12,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 14:28:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:12,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:12,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1178639054, now seen corresponding path program 1 times [2023-12-02 14:28:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53012969] [2023-12-02 14:28:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:12,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:12,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:12,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:12,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 14:28:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:13,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:13,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:28:13,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:13,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53012969] [2023-12-02 14:28:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53012969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:28:13,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554835686] [2023-12-02 14:28:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:13,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:28:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:28:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:28:13,751 INFO L87 Difference]: Start difference. First operand 317 states and 418 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:13,882 INFO L93 Difference]: Finished difference Result 321 states and 414 transitions. [2023-12-02 14:28:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:28:13,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 14:28:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:13,885 INFO L225 Difference]: With dead ends: 321 [2023-12-02 14:28:13,885 INFO L226 Difference]: Without dead ends: 321 [2023-12-02 14:28:13,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:28:13,886 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 36 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:13,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1125 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-02 14:28:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-12-02 14:28:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 303 states have (on average 1.283828382838284) internal successors, (389), 310 states have internal predecessors, (389), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:28:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 413 transitions. [2023-12-02 14:28:13,902 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 413 transitions. Word has length 151 [2023-12-02 14:28:13,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:13,903 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 413 transitions. [2023-12-02 14:28:13,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 413 transitions. [2023-12-02 14:28:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-02 14:28:13,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:13,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:13,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 14:28:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:14,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1740524222, now seen corresponding path program 1 times [2023-12-02 14:28:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:14,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363468388] [2023-12-02 14:28:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:14,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:14,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:14,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 14:28:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:14,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:14,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:28:15,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:15,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:15,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363468388] [2023-12-02 14:28:15,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363468388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:15,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:15,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:28:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541133842] [2023-12-02 14:28:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:15,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:28:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:28:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:28:15,066 INFO L87 Difference]: Start difference. First operand 320 states and 413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:15,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:15,929 INFO L93 Difference]: Finished difference Result 415 states and 529 transitions. [2023-12-02 14:28:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:28:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-02 14:28:15,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:15,932 INFO L225 Difference]: With dead ends: 415 [2023-12-02 14:28:15,932 INFO L226 Difference]: Without dead ends: 415 [2023-12-02 14:28:15,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:28:15,933 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 79 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:15,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 797 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 14:28:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-02 14:28:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 362. [2023-12-02 14:28:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 345 states have (on average 1.2608695652173914) internal successors, (435), 352 states have internal predecessors, (435), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 14:28:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 459 transitions. [2023-12-02 14:28:15,943 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 459 transitions. Word has length 151 [2023-12-02 14:28:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:15,943 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 459 transitions. [2023-12-02 14:28:15,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:28:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 459 transitions. [2023-12-02 14:28:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 14:28:15,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:15,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:15,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 14:28:16,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:16,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:16,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:16,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1105018770, now seen corresponding path program 1 times [2023-12-02 14:28:16,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:16,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084757222] [2023-12-02 14:28:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:16,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:16,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:16,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:16,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 14:28:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:16,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:16,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:28:16,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:16,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084757222] [2023-12-02 14:28:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084757222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:16,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:28:16,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:28:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727925705] [2023-12-02 14:28:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:16,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:28:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:28:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:28:16,859 INFO L87 Difference]: Start difference. First operand 362 states and 459 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:28:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:16,953 INFO L93 Difference]: Finished difference Result 364 states and 463 transitions. [2023-12-02 14:28:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:28:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-12-02 14:28:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:16,956 INFO L225 Difference]: With dead ends: 364 [2023-12-02 14:28:16,956 INFO L226 Difference]: Without dead ends: 364 [2023-12-02 14:28:16,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:28:16,958 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:16,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1187 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-12-02 14:28:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2023-12-02 14:28:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 346 states have (on average 1.2630057803468209) internal successors, (437), 354 states have internal predecessors, (437), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 14:28:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 463 transitions. [2023-12-02 14:28:16,971 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 463 transitions. Word has length 164 [2023-12-02 14:28:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:16,972 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 463 transitions. [2023-12-02 14:28:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:28:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 463 transitions. [2023-12-02 14:28:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 14:28:16,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:16,975 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:16,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 14:28:17,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:17,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:17,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash -980723662, now seen corresponding path program 1 times [2023-12-02 14:28:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:17,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931743265] [2023-12-02 14:28:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:17,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:17,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:17,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:17,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 14:28:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:17,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:17,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:28:17,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:28:18,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931743265] [2023-12-02 14:28:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931743265] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [65458972] [2023-12-02 14:28:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:18,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:18,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 14:28:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:18,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:28:18,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 14:28:18,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [65458972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 14:28:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171996335] [2023-12-02 14:28:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:28:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:28:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:18,963 INFO L87 Difference]: Start difference. First operand 364 states and 463 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:19,077 INFO L93 Difference]: Finished difference Result 385 states and 484 transitions. [2023-12-02 14:28:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:28:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 14:28:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:19,084 INFO L225 Difference]: With dead ends: 385 [2023-12-02 14:28:19,084 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 14:28:19,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:19,085 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 8 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:19,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 748 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 14:28:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2023-12-02 14:28:19,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 366 states have (on average 1.2486338797814207) internal successors, (457), 374 states have internal predecessors, (457), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-12-02 14:28:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 483 transitions. [2023-12-02 14:28:19,100 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 483 transitions. Word has length 166 [2023-12-02 14:28:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:19,101 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 483 transitions. [2023-12-02 14:28:19,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 483 transitions. [2023-12-02 14:28:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 14:28:19,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:19,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:19,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-02 14:28:19,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 14:28:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:19,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:19,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1889855826, now seen corresponding path program 1 times [2023-12-02 14:28:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252486870] [2023-12-02 14:28:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:19,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:19,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:19,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:19,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 14:28:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:20,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:20,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:28:20,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:28:20,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252486870] [2023-12-02 14:28:20,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252486870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37127309] [2023-12-02 14:28:20,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:20,394 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:20,396 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:20,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 14:28:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:21,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:21,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 14:28:21,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [37127309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 14:28:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201950764] [2023-12-02 14:28:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:28:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:28:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:21,694 INFO L87 Difference]: Start difference. First operand 384 states and 483 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:22,788 INFO L93 Difference]: Finished difference Result 683 states and 868 transitions. [2023-12-02 14:28:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:28:22,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-12-02 14:28:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:22,794 INFO L225 Difference]: With dead ends: 683 [2023-12-02 14:28:22,794 INFO L226 Difference]: Without dead ends: 683 [2023-12-02 14:28:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:22,795 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 307 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:22,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 884 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:28:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-12-02 14:28:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 626. [2023-12-02 14:28:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 599 states have (on average 1.2470784641068446) internal successors, (747), 612 states have internal predecessors, (747), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-12-02 14:28:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 793 transitions. [2023-12-02 14:28:22,819 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 793 transitions. Word has length 166 [2023-12-02 14:28:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:22,820 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 793 transitions. [2023-12-02 14:28:22,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 793 transitions. [2023-12-02 14:28:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-02 14:28:22,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:22,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:22,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 14:28:23,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 14:28:23,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:23,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:23,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1642793464, now seen corresponding path program 1 times [2023-12-02 14:28:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606385741] [2023-12-02 14:28:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:23,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:23,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 14:28:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:23,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:23,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 14:28:23,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 14:28:24,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:24,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606385741] [2023-12-02 14:28:24,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606385741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:24,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1876906672] [2023-12-02 14:28:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:24,042 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:24,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:24,043 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:24,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 14:28:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:24,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:24,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 14:28:25,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1876906672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-12-02 14:28:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449315297] [2023-12-02 14:28:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:28:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:28:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:25,828 INFO L87 Difference]: Start difference. First operand 626 states and 793 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:26,442 INFO L93 Difference]: Finished difference Result 823 states and 1046 transitions. [2023-12-02 14:28:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:28:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-12-02 14:28:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:26,450 INFO L225 Difference]: With dead ends: 823 [2023-12-02 14:28:26,451 INFO L226 Difference]: Without dead ends: 823 [2023-12-02 14:28:26,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 14:28:26,451 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 164 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:26,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 832 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:28:26,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-12-02 14:28:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 766. [2023-12-02 14:28:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 736 states have (on average 1.247282608695652) internal successors, (918), 749 states have internal predecessors, (918), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 14:28:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 971 transitions. [2023-12-02 14:28:26,474 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 971 transitions. Word has length 174 [2023-12-02 14:28:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 971 transitions. [2023-12-02 14:28:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:28:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 971 transitions. [2023-12-02 14:28:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 14:28:26,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:26,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:26,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 14:28:26,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 14:28:26,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:26,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:26,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -208640395, now seen corresponding path program 1 times [2023-12-02 14:28:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715202704] [2023-12-02 14:28:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:26,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:26,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:26,881 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:26,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 14:28:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:27,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:27,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:27,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:27,782 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715202704] [2023-12-02 14:28:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715202704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1741210267] [2023-12-02 14:28:27,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:27,784 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:27,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 14:28:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:28,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:28,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 14:28:28,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1741210267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-12-02 14:28:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581158823] [2023-12-02 14:28:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:28,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:28:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:28:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:28,915 INFO L87 Difference]: Start difference. First operand 766 states and 971 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:29,041 INFO L93 Difference]: Finished difference Result 796 states and 986 transitions. [2023-12-02 14:28:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:28:29,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 14:28:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:29,046 INFO L225 Difference]: With dead ends: 796 [2023-12-02 14:28:29,047 INFO L226 Difference]: Without dead ends: 796 [2023-12-02 14:28:29,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:29,047 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 34 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:29,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1091 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-02 14:28:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2023-12-02 14:28:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 763 states have (on average 1.218872870249017) internal successors, (930), 776 states have internal predecessors, (930), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 14:28:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 983 transitions. [2023-12-02 14:28:29,069 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 983 transitions. Word has length 181 [2023-12-02 14:28:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:29,069 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 983 transitions. [2023-12-02 14:28:29,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 983 transitions. [2023-12-02 14:28:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 14:28:29,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:29,072 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:29,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 14:28:29,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 14:28:29,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:29,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:29,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:29,473 INFO L85 PathProgramCache]: Analyzing trace with hash 609008055, now seen corresponding path program 1 times [2023-12-02 14:28:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105234761] [2023-12-02 14:28:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:29,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:29,475 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:29,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 14:28:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:30,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:30,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:30,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:30,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105234761] [2023-12-02 14:28:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105234761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [532027524] [2023-12-02 14:28:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:30,468 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:30,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:30,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:30,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 14:28:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:31,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:31,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 14:28:31,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:31,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [532027524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:31,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:31,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 14:28:31,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923276599] [2023-12-02 14:28:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:31,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:28:31,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:28:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:28:31,575 INFO L87 Difference]: Start difference. First operand 793 states and 983 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:28:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:31,688 INFO L93 Difference]: Finished difference Result 745 states and 902 transitions. [2023-12-02 14:28:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:28:31,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2023-12-02 14:28:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:31,693 INFO L225 Difference]: With dead ends: 745 [2023-12-02 14:28:31,693 INFO L226 Difference]: Without dead ends: 745 [2023-12-02 14:28:31,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:31,694 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 39 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:31,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1065 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-12-02 14:28:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 742. [2023-12-02 14:28:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 712 states have (on average 1.1882022471910112) internal successors, (846), 725 states have internal predecessors, (846), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-12-02 14:28:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 899 transitions. [2023-12-02 14:28:31,722 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 899 transitions. Word has length 181 [2023-12-02 14:28:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:31,723 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 899 transitions. [2023-12-02 14:28:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 14:28:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 899 transitions. [2023-12-02 14:28:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 14:28:31,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:31,725 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:31,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 14:28:31,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 14:28:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:32,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:32,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1118666473, now seen corresponding path program 1 times [2023-12-02 14:28:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117209743] [2023-12-02 14:28:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:32,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:32,128 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:32,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 14:28:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:32,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:33,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:33,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:33,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117209743] [2023-12-02 14:28:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117209743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774861302] [2023-12-02 14:28:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:33,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:33,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:33,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 14:28:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:34,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:34,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 14:28:34,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:34,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774861302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:34,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:34,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 14:28:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28131303] [2023-12-02 14:28:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:28:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:34,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:28:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:28:34,612 INFO L87 Difference]: Start difference. First operand 742 states and 899 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:37,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:39,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:40,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:43,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:45,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:48,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:49,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:51,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 14:28:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:51,776 INFO L93 Difference]: Finished difference Result 679 states and 815 transitions. [2023-12-02 14:28:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:28:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-12-02 14:28:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:51,780 INFO L225 Difference]: With dead ends: 679 [2023-12-02 14:28:51,781 INFO L226 Difference]: Without dead ends: 679 [2023-12-02 14:28:51,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:51,781 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 469 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:51,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 656 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 5 Unknown, 0 Unchecked, 17.1s Time] [2023-12-02 14:28:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-02 14:28:51,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 462. [2023-12-02 14:28:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 441 states have (on average 1.1904761904761905) internal successors, (525), 449 states have internal predecessors, (525), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 14:28:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 558 transitions. [2023-12-02 14:28:51,794 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 558 transitions. Word has length 181 [2023-12-02 14:28:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:51,794 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 558 transitions. [2023-12-02 14:28:51,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 558 transitions. [2023-12-02 14:28:51,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 14:28:51,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:51,796 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:51,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 14:28:52,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 14:28:52,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:52,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:52,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1675950285, now seen corresponding path program 1 times [2023-12-02 14:28:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:52,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790166164] [2023-12-02 14:28:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:52,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:52,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:52,200 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:52,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 14:28:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:53,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:53,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:53,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:53,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790166164] [2023-12-02 14:28:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790166164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1256923627] [2023-12-02 14:28:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:53,218 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:53,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 14:28:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:54,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:54,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 14:28:54,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:28:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1256923627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:28:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:28:54,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-12-02 14:28:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286631990] [2023-12-02 14:28:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:28:54,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:28:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:28:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-02 14:28:54,506 INFO L87 Difference]: Start difference. First operand 462 states and 558 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:28:54,604 INFO L93 Difference]: Finished difference Result 450 states and 539 transitions. [2023-12-02 14:28:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:28:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 189 [2023-12-02 14:28:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:28:54,608 INFO L225 Difference]: With dead ends: 450 [2023-12-02 14:28:54,608 INFO L226 Difference]: Without dead ends: 450 [2023-12-02 14:28:54,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 14:28:54,609 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 32 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:28:54,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1051 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:28:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-12-02 14:28:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2023-12-02 14:28:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.1794871794871795) internal successors, (506), 437 states have internal predecessors, (506), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (17), 10 states have call predecessors, (17), 14 states have call successors, (17) [2023-12-02 14:28:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 539 transitions. [2023-12-02 14:28:54,618 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 539 transitions. Word has length 189 [2023-12-02 14:28:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:28:54,619 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 539 transitions. [2023-12-02 14:28:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 14:28:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 539 transitions. [2023-12-02 14:28:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-02 14:28:54,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:28:54,621 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:28:54,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-02 14:28:54,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 14:28:55,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:55,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:28:55,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:28:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash 347985893, now seen corresponding path program 1 times [2023-12-02 14:28:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:28:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122115656] [2023-12-02 14:28:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:55,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:28:55,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:28:55,025 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:28:55,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 14:28:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:55,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:55,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:55,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:56,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:28:56,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122115656] [2023-12-02 14:28:56,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122115656] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:56,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1008357539] [2023-12-02 14:28:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:56,021 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:28:56,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:28:56,022 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:28:56,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 14:28:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:57,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:28:57,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 14:28:57,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 14:28:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1008357539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65662818] [2023-12-02 14:28:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:28:57,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:57,721 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:57,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 14:28:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:28:58,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:28:58,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 14:28:58,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 14:28:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65662818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:28:59,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:28:59,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-12-02 14:28:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562078868] [2023-12-02 14:28:59,343 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:28:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:28:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:28:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:28:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 14:28:59,345 INFO L87 Difference]: Start difference. First operand 450 states and 539 transitions. Second operand has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 14:29:01,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:29:01,362 INFO L93 Difference]: Finished difference Result 977 states and 1188 transitions. [2023-12-02 14:29:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 14:29:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 189 [2023-12-02 14:29:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:29:01,368 INFO L225 Difference]: With dead ends: 977 [2023-12-02 14:29:01,368 INFO L226 Difference]: Without dead ends: 977 [2023-12-02 14:29:01,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-02 14:29:01,369 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1434 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:29:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 4243 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 14:29:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-12-02 14:29:01,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 907. [2023-12-02 14:29:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 871 states have (on average 1.1802525832376578) internal successors, (1028), 884 states have internal predecessors, (1028), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 14:29:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1094 transitions. [2023-12-02 14:29:01,393 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1094 transitions. Word has length 189 [2023-12-02 14:29:01,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:29:01,394 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1094 transitions. [2023-12-02 14:29:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 41.6) internal successors, (416), 12 states have internal predecessors, (416), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 14:29:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1094 transitions. [2023-12-02 14:29:01,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-02 14:29:01,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:29:01,400 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:29:01,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 14:29:01,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 14:29:01,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 14:29:02,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:29:02,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:29:02,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:29:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1511395767, now seen corresponding path program 1 times [2023-12-02 14:29:02,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:29:02,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807292951] [2023-12-02 14:29:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:29:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:29:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:29:02,004 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:29:02,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 14:29:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:29:04,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:29:04,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 14:29:04,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 14:29:04,612 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:29:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807292951] [2023-12-02 14:29:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807292951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [792089359] [2023-12-02 14:29:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:29:04,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:29:04,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:29:04,613 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:29:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 14:29:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:29:08,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:29:08,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2023-12-02 14:29:08,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-12-02 14:29:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [792089359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878506422] [2023-12-02 14:29:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:29:08,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:29:08,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:29:08,460 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:29:08,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 14:29:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:29:10,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:29:10,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 200 proven. 3 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-12-02 14:29:10,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 128 proven. 29 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-12-02 14:29:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878506422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:11,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:29:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-12-02 14:29:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144460319] [2023-12-02 14:29:11,084 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:29:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 14:29:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:29:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 14:29:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:29:11,088 INFO L87 Difference]: Start difference. First operand 907 states and 1094 transitions. Second operand has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 14:29:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:29:12,579 INFO L93 Difference]: Finished difference Result 926 states and 1150 transitions. [2023-12-02 14:29:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 14:29:12,580 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 515 [2023-12-02 14:29:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:29:12,585 INFO L225 Difference]: With dead ends: 926 [2023-12-02 14:29:12,585 INFO L226 Difference]: Without dead ends: 923 [2023-12-02 14:29:12,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3109 GetRequests, 3066 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 14:29:12,586 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 34 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:29:12,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3254 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 14:29:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2023-12-02 14:29:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 919. [2023-12-02 14:29:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 883 states have (on average 1.1823329558323896) internal successors, (1044), 896 states have internal predecessors, (1044), 30 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (36), 20 states have call predecessors, (36), 28 states have call successors, (36) [2023-12-02 14:29:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1110 transitions. [2023-12-02 14:29:12,610 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1110 transitions. Word has length 515 [2023-12-02 14:29:12,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:29:12,610 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1110 transitions. [2023-12-02 14:29:12,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 14.75) internal successors, (236), 20 states have internal predecessors, (236), 2 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 14:29:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1110 transitions. [2023-12-02 14:29:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2023-12-02 14:29:12,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:29:12,615 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:29:12,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 14:29:12,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 14:29:13,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-02 14:29:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:29:13,216 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:29:13,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:29:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 36345143, now seen corresponding path program 2 times [2023-12-02 14:29:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:29:13,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785704838] [2023-12-02 14:29:13,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:29:13,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:29:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:29:13,220 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:29:13,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 14:29:15,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:29:15,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:29:15,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:29:15,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 14:29:16,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 14:29:16,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:29:16,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785704838] [2023-12-02 14:29:16,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785704838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:16,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1000407771] [2023-12-02 14:29:16,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:29:16,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:29:16,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:29:16,858 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:29:16,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 14:29:21,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:29:21,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:29:21,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:29:21,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2023-12-02 14:29:21,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 112 proven. 377 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-12-02 14:29:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1000407771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326171722] [2023-12-02 14:29:22,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:29:22,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:29:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:29:22,165 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:29:22,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 14:29:24,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:29:24,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:29:24,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:29:24,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:29:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 14:29:25,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:29:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1420 backedges. 0 proven. 628 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2023-12-02 14:29:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326171722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:29:27,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:29:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-12-02 14:29:27,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079498665] [2023-12-02 14:29:27,612 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:29:27,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 14:29:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:29:27,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 14:29:27,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 14:29:27,616 INFO L87 Difference]: Start difference. First operand 919 states and 1110 transitions. Second operand has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 14:29:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:29:44,805 INFO L93 Difference]: Finished difference Result 2247 states and 2882 transitions. [2023-12-02 14:29:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-02 14:29:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 539 [2023-12-02 14:29:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:29:44,815 INFO L225 Difference]: With dead ends: 2247 [2023-12-02 14:29:44,816 INFO L226 Difference]: Without dead ends: 2245 [2023-12-02 14:29:44,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3267 GetRequests, 3198 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 14:29:44,819 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 3245 mSDsluCounter, 23923 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 25192 SdHoareTripleChecker+Invalid, 4266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:29:44,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3407 Valid, 25192 Invalid, 4266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [714 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-02 14:29:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2023-12-02 14:29:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2164. [2023-12-02 14:29:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 2089 states have (on average 1.170416467209191) internal successors, (2445), 2117 states have internal predecessors, (2445), 69 states have call successors, (69), 4 states have call predecessors, (69), 4 states have return successors, (87), 47 states have call predecessors, (87), 67 states have call successors, (87) [2023-12-02 14:29:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2601 transitions. [2023-12-02 14:29:44,864 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2601 transitions. Word has length 539 [2023-12-02 14:29:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:29:44,864 INFO L495 AbstractCegarLoop]: Abstraction has 2164 states and 2601 transitions. [2023-12-02 14:29:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 32.705882352941174) internal successors, (1112), 36 states have internal predecessors, (1112), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-12-02 14:29:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2601 transitions. [2023-12-02 14:29:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-02 14:29:44,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:29:44,880 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:29:44,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 14:29:45,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2023-12-02 14:29:45,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 14:29:45,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:29:45,481 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 14:29:45,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:29:45,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1517715187, now seen corresponding path program 3 times [2023-12-02 14:29:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:29:45,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441645007] [2023-12-02 14:29:45,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:29:45,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:29:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:29:45,486 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:29:45,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290d02b9-6570-433d-941a-63d44907ff04/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process