./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:11,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:11,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-23 21:33:11,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:11,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:11,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:11,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:11,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:11,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:11,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:11,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:11,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:11,431 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:11,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:11,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:33:11,434 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:11,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:11,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:11,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:11,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:33:11,436 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:33:11,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:33:11,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:11,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:33:11,438 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:33:11,439 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:33:11,439 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:11,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:33:11,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:11,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:11,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:11,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:33:11,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:11,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:11,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:11,444 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:11,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:33:11,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:33:11,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:11,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:11,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:11,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:11,446 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2023-11-23 21:33:11,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:11,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:11,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:11,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:11,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:11,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2023-11-23 21:33:14,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:15,298 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:15,300 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2023-11-23 21:33:15,319 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/9e15bc8ed/74f17fce0be9444383cbb04e95398a1d/FLAG3573685c1 [2023-11-23 21:33:15,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/9e15bc8ed/74f17fce0be9444383cbb04e95398a1d [2023-11-23 21:33:15,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:15,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:15,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:15,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:15,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:15,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:15" (1/1) ... [2023-11-23 21:33:15,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645303c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:15, skipping insertion in model container [2023-11-23 21:33:15,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:15" (1/1) ... [2023-11-23 21:33:15,431 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:16,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:16,115 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:33:16,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26ddf47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:16, skipping insertion in model container [2023-11-23 21:33:16,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:16,117 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:33:16,120 INFO L158 Benchmark]: Toolchain (without parser) took 778.09ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 63.5MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:33:16,120 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:33:16,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 775.06ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 63.5MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:33:16,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 775.06ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 63.5MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:18,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:18,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-23 21:33:18,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:18,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:18,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:18,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:18,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:18,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:18,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:18,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:18,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:18,826 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:18,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:18,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:33:18,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:18,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:18,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:18,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:18,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:33:18,832 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:33:18,832 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:33:18,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:18,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:33:18,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:33:18,834 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:33:18,834 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:33:18,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:33:18,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:18,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:33:18,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:18,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:18,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:18,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:33:18,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:18,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:18,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:18,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:18,839 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 21:33:18,840 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:18,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:18,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:18,841 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:18,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:18,842 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 21:33:18,842 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2023-11-23 21:33:19,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:19,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:19,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:19,325 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:19,326 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:19,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2023-11-23 21:33:22,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:23,211 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:23,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2023-11-23 21:33:23,249 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/a84240c8e/07877d2da44e4e939e2e1c43fb8d698f/FLAGd35808870 [2023-11-23 21:33:23,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/data/a84240c8e/07877d2da44e4e939e2e1c43fb8d698f [2023-11-23 21:33:23,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:23,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:23,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:23,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:23,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:23,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:23" (1/1) ... [2023-11-23 21:33:23,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a4b5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:23, skipping insertion in model container [2023-11-23 21:33:23,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:23" (1/1) ... [2023-11-23 21:33:23,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:24,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:24,167 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:33:24,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:24,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:24,344 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:33:24,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:24,492 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:33:24,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24 WrapperNode [2023-11-23 21:33:24,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:24,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:24,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:33:24,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:33:24,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,631 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1460 [2023-11-23 21:33:24,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:24,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:33:24,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:33:24,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:33:24,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:33:24,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:33:24,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:33:24,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:33:24,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (1/1) ... [2023-11-23 21:33:24,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:24,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:33:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:33:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:33:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:33:24,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:33:24,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:33:24,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:33:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:33:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:33:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:33:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:33:24,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:33:24,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:33:25,188 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:33:25,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:38,341 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:38,388 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:38,389 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-23 21:33:38,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:38 BoogieIcfgContainer [2023-11-23 21:33:38,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:38,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:38,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:38,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:38,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:33:23" (1/3) ... [2023-11-23 21:33:38,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f7fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:38, skipping insertion in model container [2023-11-23 21:33:38,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:24" (2/3) ... [2023-11-23 21:33:38,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1f7fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:38, skipping insertion in model container [2023-11-23 21:33:38,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:38" (3/3) ... [2023-11-23 21:33:38,400 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2023-11-23 21:33:38,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:38,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:33:38,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:38,492 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=PETRI_NET, 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;@3764bab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:38,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:33:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 245 states have (on average 1.6775510204081632) internal successors, (411), 257 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:33:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:33:38,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:38,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:38,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:38,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1951363134, now seen corresponding path program 1 times [2023-11-23 21:33:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591772882] [2023-11-23 21:33:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:38,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:38,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:38,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:38,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:33:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:38,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:33:38,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:38,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:38,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591772882] [2023-11-23 21:33:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591772882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777503259] [2023-11-23 21:33:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:38,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:38,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:38,979 INFO L87 Difference]: Start difference. First operand has 266 states, 245 states have (on average 1.6775510204081632) internal successors, (411), 257 states have internal predecessors, (411), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:39,320 INFO L93 Difference]: Finished difference Result 439 states and 582 transitions. [2023-11-23 21:33:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 21:33:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:39,352 INFO L225 Difference]: With dead ends: 439 [2023-11-23 21:33:39,358 INFO L226 Difference]: Without dead ends: 438 [2023-11-23 21:33:39,360 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 [2023-11-23 21:33:39,364 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 213 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:39,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 695 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:33:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-23 21:33:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 265. [2023-11-23 21:33:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 256 states have internal predecessors, (324), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:33:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 356 transitions. [2023-11-23 21:33:39,448 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 356 transitions. Word has length 10 [2023-11-23 21:33:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:39,449 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 356 transitions. [2023-11-23 21:33:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 356 transitions. [2023-11-23 21:33:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 21:33:39,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:39,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:39,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 21:33:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:39,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:39,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash -341190442, now seen corresponding path program 1 times [2023-11-23 21:33:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:39,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626176662] [2023-11-23 21:33:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:39,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:39,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:39,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:39,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:33:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:40,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:40,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:40,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:40,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:40,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626176662] [2023-11-23 21:33:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626176662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:40,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:40,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:40,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719453717] [2023-11-23 21:33:40,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:40,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:40,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:40,549 INFO L87 Difference]: Start difference. First operand 265 states and 356 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:40,768 INFO L93 Difference]: Finished difference Result 269 states and 352 transitions. [2023-11-23 21:33:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:40,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-23 21:33:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:40,772 INFO L225 Difference]: With dead ends: 269 [2023-11-23 21:33:40,773 INFO L226 Difference]: Without dead ends: 269 [2023-11-23 21:33:40,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:40,775 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 36 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:40,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 942 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:33:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-23 21:33:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2023-11-23 21:33:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 259 states have internal predecessors, (319), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:33:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 351 transitions. [2023-11-23 21:33:40,800 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 351 transitions. Word has length 116 [2023-11-23 21:33:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:40,801 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 351 transitions. [2023-11-23 21:33:40,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 351 transitions. [2023-11-23 21:33:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 21:33:40,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:40,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:40,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:41,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:41,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:41,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:41,020 INFO L85 PathProgramCache]: Analyzing trace with hash 311745378, now seen corresponding path program 1 times [2023-11-23 21:33:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799307506] [2023-11-23 21:33:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:41,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:41,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:33:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:41,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:41,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:42,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:42,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799307506] [2023-11-23 21:33:42,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799307506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:42,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:42,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:42,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451727419] [2023-11-23 21:33:42,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:42,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:42,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:42,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:42,352 INFO L87 Difference]: Start difference. First operand 268 states and 351 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:43,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:43,306 INFO L93 Difference]: Finished difference Result 363 states and 467 transitions. [2023-11-23 21:33:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:43,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-23 21:33:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:43,315 INFO L225 Difference]: With dead ends: 363 [2023-11-23 21:33:43,315 INFO L226 Difference]: Without dead ends: 363 [2023-11-23 21:33:43,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:43,317 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 79 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:43,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 642 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:33:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-23 21:33:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 310. [2023-11-23 21:33:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 290 states have (on average 1.2586206896551724) internal successors, (365), 301 states have internal predecessors, (365), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:33:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 397 transitions. [2023-11-23 21:33:43,348 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 397 transitions. Word has length 116 [2023-11-23 21:33:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:43,349 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 397 transitions. [2023-11-23 21:33:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 397 transitions. [2023-11-23 21:33:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 21:33:43,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:43,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:43,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:43,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:43,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -942484721, now seen corresponding path program 1 times [2023-11-23 21:33:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:43,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437102451] [2023-11-23 21:33:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:43,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:43,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:43,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:43,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:33:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:44,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:44,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:44,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:44,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437102451] [2023-11-23 21:33:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437102451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:44,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:44,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196378038] [2023-11-23 21:33:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:44,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:44,515 INFO L87 Difference]: Start difference. First operand 310 states and 397 transitions. Second operand has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:33:44,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:44,655 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2023-11-23 21:33:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:44,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2023-11-23 21:33:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:44,660 INFO L225 Difference]: With dead ends: 312 [2023-11-23 21:33:44,660 INFO L226 Difference]: Without dead ends: 312 [2023-11-23 21:33:44,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:44,662 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:44,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1004 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:33:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-23 21:33:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-23 21:33:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 291 states have (on average 1.261168384879725) internal successors, (367), 303 states have internal predecessors, (367), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-23 21:33:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 401 transitions. [2023-11-23 21:33:44,683 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 401 transitions. Word has length 129 [2023-11-23 21:33:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:44,684 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 401 transitions. [2023-11-23 21:33:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:33:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 401 transitions. [2023-11-23 21:33:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-23 21:33:44,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:44,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:44,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:44,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:44,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:44,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash 511910765, now seen corresponding path program 1 times [2023-11-23 21:33:44,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933738925] [2023-11-23 21:33:44,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:44,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:44,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:44,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:33:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:45,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:45,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:33:45,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:46,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:46,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933738925] [2023-11-23 21:33:46,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933738925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:46,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:33:46,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 21:33:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829397918] [2023-11-23 21:33:46,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:33:46,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:33:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:46,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:33:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:33:46,046 INFO L87 Difference]: Start difference. First operand 312 states and 401 transitions. Second operand has 8 states, 6 states have (on average 22.0) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:33:46,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:46,529 INFO L93 Difference]: Finished difference Result 321 states and 416 transitions. [2023-11-23 21:33:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:33:46,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 22.0) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 131 [2023-11-23 21:33:46,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:46,534 INFO L225 Difference]: With dead ends: 321 [2023-11-23 21:33:46,534 INFO L226 Difference]: Without dead ends: 321 [2023-11-23 21:33:46,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:33:46,536 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 6 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:46,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1660 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:33:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-23 21:33:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-11-23 21:33:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 298 states have (on average 1.2751677852348993) internal successors, (380), 310 states have internal predecessors, (380), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-23 21:33:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 414 transitions. [2023-11-23 21:33:46,554 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 414 transitions. Word has length 131 [2023-11-23 21:33:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:46,555 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 414 transitions. [2023-11-23 21:33:46,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 22.0) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:33:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 414 transitions. [2023-11-23 21:33:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 21:33:46,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:46,558 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:46,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:46,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:46,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:46,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:46,772 INFO L85 PathProgramCache]: Analyzing trace with hash -68089649, now seen corresponding path program 2 times [2023-11-23 21:33:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:46,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190183317] [2023-11-23 21:33:46,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:33:46,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:46,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:46,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:46,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:33:47,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:33:47,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:33:47,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:33:47,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 21:33:48,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:48,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:33:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190183317] [2023-11-23 21:33:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190183317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095881286] [2023-11-23 21:33:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:48,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:33:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:48,502 INFO L87 Difference]: Start difference. First operand 320 states and 414 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:50,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:52,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:54,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:59,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:59,002 INFO L93 Difference]: Finished difference Result 403 states and 523 transitions. [2023-11-23 21:33:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 135 [2023-11-23 21:33:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:59,014 INFO L225 Difference]: With dead ends: 403 [2023-11-23 21:33:59,015 INFO L226 Difference]: Without dead ends: 403 [2023-11-23 21:33:59,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:59,016 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 59 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:59,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 939 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2023-11-23 21:33:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-23 21:33:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2023-11-23 21:33:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 378 states have (on average 1.2751322751322751) internal successors, (482), 390 states have internal predecessors, (482), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-23 21:33:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 523 transitions. [2023-11-23 21:33:59,053 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 523 transitions. Word has length 135 [2023-11-23 21:33:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:59,054 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 523 transitions. [2023-11-23 21:33:59,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 523 transitions. [2023-11-23 21:33:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 21:33:59,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:59,059 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:59,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:59,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:59,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:59,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1279112337, now seen corresponding path program 1 times [2023-11-23 21:33:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:33:59,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087309533] [2023-11-23 21:33:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:59,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:33:59,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:33:59,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 21:34:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:00,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:34:00,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 62 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 21:34:00,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 68 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 21:34:00,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:34:00,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087309533] [2023-11-23 21:34:00,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087309533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:34:00,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:34:00,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-23 21:34:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173523633] [2023-11-23 21:34:00,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:00,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:34:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:34:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:34:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:34:00,884 INFO L87 Difference]: Start difference. First operand 403 states and 523 transitions. Second operand has 14 states, 12 states have (on average 11.916666666666666) internal successors, (143), 14 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:34:02,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:34:02,218 INFO L93 Difference]: Finished difference Result 418 states and 553 transitions. [2023-11-23 21:34:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 21:34:02,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 11.916666666666666) internal successors, (143), 14 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 154 [2023-11-23 21:34:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:34:02,224 INFO L225 Difference]: With dead ends: 418 [2023-11-23 21:34:02,224 INFO L226 Difference]: Without dead ends: 416 [2023-11-23 21:34:02,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-23 21:34:02,225 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 13 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:34:02,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1999 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:34:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-23 21:34:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 412. [2023-11-23 21:34:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 387 states have (on average 1.276485788113695) internal successors, (494), 399 states have internal predecessors, (494), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-23 21:34:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 535 transitions. [2023-11-23 21:34:02,263 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 535 transitions. Word has length 154 [2023-11-23 21:34:02,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:34:02,263 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 535 transitions. [2023-11-23 21:34:02,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 11.916666666666666) internal successors, (143), 14 states have internal predecessors, (143), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:34:02,264 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 535 transitions. [2023-11-23 21:34:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 21:34:02,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:34:02,266 INFO L195 NwaCegarLoop]: trace histogram [30, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:02,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:34:02,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:34:02,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:34:02,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -761575153, now seen corresponding path program 2 times [2023-11-23 21:34:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:34:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771339654] [2023-11-23 21:34:02,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:34:02,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:34:02,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:34:02,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:34:02,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f71c9fba-f0d8-4114-ae6a-eb961b6484a0/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:34:03,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:34:03,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:34:03,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:34:03,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:34:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 21:34:04,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:34:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 1 proven. 311 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 21:34:05,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:34:05,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771339654] [2023-11-23 21:34:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771339654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:34:05,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:34:05,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-23 21:34:05,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448576151] [2023-11-23 21:34:05,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:34:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 21:34:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:34:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 21:34:05,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-23 21:34:05,083 INFO L87 Difference]: Start difference. First operand 412 states and 535 transitions. Second operand has 26 states, 24 states have (on average 6.458333333333333) internal successors, (155), 26 states have internal predecessors, (155), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8)