./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya --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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:23:08,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:23:08,824 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-29 04:23:08,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:23:08,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:23:08,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:23:08,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:23:08,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:23:08,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:23:08,855 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:23:08,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:23:08,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:23:08,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:23:08,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:23:08,858 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:23:08,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:23:08,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:23:08,859 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:23:08,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:23:08,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:23:08,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:23:08,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:23:08,862 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:23:08,862 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:23:08,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:23:08,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:23:08,864 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:23:08,864 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:23:08,865 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:23:08,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:23:08,865 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:23:08,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:23:08,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:23:08,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:23:08,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:23:08,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:23:08,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:23:08,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:23:08,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:23:08,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:23:08,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:23:08,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:23:08,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:23:08,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:23:08,869 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_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2023-11-29 04:23:09,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:23:09,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:23:09,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:23:09,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:23:09,111 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:23:09,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-29 04:23:11,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:23:12,187 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:23:12,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-29 04:23:12,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/0db0891cf/e0ac629ce00a4d4f8eb9ee953be932c6/FLAGc09886fd2 [2023-11-29 04:23:12,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/0db0891cf/e0ac629ce00a4d4f8eb9ee953be932c6 [2023-11-29 04:23:12,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:23:12,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:23:12,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:12,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:23:12,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:23:12,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:12" (1/1) ... [2023-11-29 04:23:12,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a6a3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:12, skipping insertion in model container [2023-11-29 04:23:12,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:12" (1/1) ... [2023-11-29 04:23:12,297 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:23:12,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:12,782 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) [2023-11-29 04:23:12,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c796c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:12, skipping insertion in model container [2023-11-29 04:23:12,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:12,783 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:23:12,785 INFO L158 Benchmark]: Toolchain (without parser) took 560.80ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 145.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:23:12,786 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:23:12,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.41ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 145.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:23:12,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.41ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 145.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya --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 b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:23:14,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:23:14,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-29 04:23:14,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:23:14,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:23:14,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:23:14,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:23:14,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:23:14,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:23:14,627 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:23:14,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:23:14,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:23:14,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:23:14,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:23:14,629 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:23:14,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:23:14,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:23:14,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:23:14,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:23:14,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:23:14,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:23:14,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:23:14,634 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:23:14,634 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:23:14,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:23:14,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:23:14,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:23:14,636 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:23:14,636 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:23:14,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:23:14,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:23:14,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:23:14,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:23:14,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:23:14,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:23:14,640 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:23:14,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:23:14,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:23:14,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:23:14,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:23:14,642 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:23:14,643 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:23:14,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:23:14,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:23:14,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:23:14,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:23:14,645 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:23:14,645 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_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2023-11-29 04:23:14,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:23:14,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:23:14,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:23:14,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:23:14,984 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:23:14,986 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-29 04:23:17,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:23:18,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:23:18,120 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-29 04:23:18,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/fcccf7744/dda3c1cf29994fef9f53a617676b8440/FLAG4538cab3a [2023-11-29 04:23:18,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/data/fcccf7744/dda3c1cf29994fef9f53a617676b8440 [2023-11-29 04:23:18,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:23:18,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:23:18,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:18,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:23:18,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:23:18,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:18,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e8edbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18, skipping insertion in model container [2023-11-29 04:23:18,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:18,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:23:18,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:18,680 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:23:18,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:23:18,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:18,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:23:18,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:23:18,896 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:23:18,901 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:23:18,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18 WrapperNode [2023-11-29 04:23:18,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:23:18,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:23:18,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:23:18,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:23:18,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:18,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,004 INFO L138 Inliner]: procedures = 180, calls = 299, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1002 [2023-11-29 04:23:19,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:23:19,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:23:19,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:23:19,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:23:19,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,103 INFO L175 MemorySlicer]: Split 261 memory accesses to 4 slices as follows [2, 34, 5, 220]. 84 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 55 writes are split as follows [0, 4, 1, 50]. [2023-11-29 04:23:19,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:23:19,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:23:19,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:23:19,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:23:19,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (1/1) ... [2023-11-29 04:23:19,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:23:19,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:23:19,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:23:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:23:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 04:23:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 04:23:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:23:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:23:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:23:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:23:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 04:23:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 04:23:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 04:23:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 04:23:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 04:23:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 04:23:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 04:23:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 04:23:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-29 04:23:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:23:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:23:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 04:23:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:23:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:23:19,465 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:23:19,467 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:23:28,399 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:23:28,436 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:23:28,436 INFO L309 CfgBuilder]: Removed 62 assume(true) statements. [2023-11-29 04:23:28,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:23:28 BoogieIcfgContainer [2023-11-29 04:23:28,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:23:28,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:23:28,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:23:28,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:23:28,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:23:18" (1/3) ... [2023-11-29 04:23:28,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46a693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:23:28, skipping insertion in model container [2023-11-29 04:23:28,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:23:18" (2/3) ... [2023-11-29 04:23:28,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46a693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:23:28, skipping insertion in model container [2023-11-29 04:23:28,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:23:28" (3/3) ... [2023-11-29 04:23:28,444 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2023-11-29 04:23:28,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:23:28,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:23:28,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:23:28,506 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;@4f27531c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:23:28,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:23:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 203 states have (on average 1.6847290640394088) internal successors, (342), 222 states have internal predecessors, (342), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 04:23:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 04:23:28,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:28,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:23:28,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:28,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1089719714, now seen corresponding path program 1 times [2023-11-29 04:23:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912733337] [2023-11-29 04:23:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:28,534 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 [2023-11-29 04:23:28,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:28,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:28,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:28,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:23:28,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:28,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:23:28,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:28,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912733337] [2023-11-29 04:23:28,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912733337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:28,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:28,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:23:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905256765] [2023-11-29 04:23:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:28,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:23:28,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:23:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:23:28,807 INFO L87 Difference]: Start difference. First operand has 232 states, 203 states have (on average 1.6847290640394088) internal successors, (342), 222 states have internal predecessors, (342), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:28,873 INFO L93 Difference]: Finished difference Result 230 states and 315 transitions. [2023-11-29 04:23:28,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:23:28,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 04:23:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:28,885 INFO L225 Difference]: With dead ends: 230 [2023-11-29 04:23:28,885 INFO L226 Difference]: Without dead ends: 229 [2023-11-29 04:23:28,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:23:28,890 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:28,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:23:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-29 04:23:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-29 04:23:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 202 states have (on average 1.3465346534653466) internal successors, (272), 219 states have internal predecessors, (272), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 04:23:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2023-11-29 04:23:28,945 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 314 transitions. Word has length 6 [2023-11-29 04:23:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:28,946 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 314 transitions. [2023-11-29 04:23:28,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 314 transitions. [2023-11-29 04:23:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 04:23:28,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:28,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:23:28,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:23:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:29,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:29,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -168255391, now seen corresponding path program 1 times [2023-11-29 04:23:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512414085] [2023-11-29 04:23:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:29,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:29,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:29,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:29,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:23:29,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:29,376 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:23:29,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:23:29,378 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:23:29,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-29 04:23:29,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:23:29,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-29 04:23:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:29,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:23:29,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:29,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512414085] [2023-11-29 04:23:29,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512414085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:29,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:29,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:23:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381539534] [2023-11-29 04:23:29,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:29,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:23:29,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:29,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:23:29,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:23:29,501 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:30,167 INFO L93 Difference]: Finished difference Result 410 states and 552 transitions. [2023-11-29 04:23:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:23:30,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 04:23:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:30,172 INFO L225 Difference]: With dead ends: 410 [2023-11-29 04:23:30,172 INFO L226 Difference]: Without dead ends: 410 [2023-11-29 04:23:30,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:30,174 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 224 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:30,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 866 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:23:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-29 04:23:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 231. [2023-11-29 04:23:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 204 states have (on average 1.3431372549019607) internal successors, (274), 221 states have internal predecessors, (274), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 04:23:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 316 transitions. [2023-11-29 04:23:30,201 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 316 transitions. Word has length 8 [2023-11-29 04:23:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:30,201 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 316 transitions. [2023-11-29 04:23:30,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 316 transitions. [2023-11-29 04:23:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 04:23:30,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:30,204 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] [2023-11-29 04:23:30,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:23:30,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:30,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:30,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash -384416785, now seen corresponding path program 1 times [2023-11-29 04:23:30,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377023823] [2023-11-29 04:23:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:30,410 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 [2023-11-29 04:23:30,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:30,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:30,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:30,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:23:30,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:30,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:23:30,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377023823] [2023-11-29 04:23:30,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377023823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:30,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:23:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435296550] [2023-11-29 04:23:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:23:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:23:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:23:30,814 INFO L87 Difference]: Start difference. First operand 231 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:30,970 INFO L93 Difference]: Finished difference Result 235 states and 312 transitions. [2023-11-29 04:23:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:23:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 04:23:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:30,974 INFO L225 Difference]: With dead ends: 235 [2023-11-29 04:23:30,974 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 04:23:30,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:30,975 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 36 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:30,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 819 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:23:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 04:23:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2023-11-29 04:23:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 207 states have (on average 1.2995169082125604) internal successors, (269), 224 states have internal predecessors, (269), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 04:23:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2023-11-29 04:23:30,992 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 66 [2023-11-29 04:23:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:30,992 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2023-11-29 04:23:30,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2023-11-29 04:23:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 04:23:30,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:30,995 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] [2023-11-29 04:23:31,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:23:31,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:31,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:31,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1869243619, now seen corresponding path program 1 times [2023-11-29 04:23:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132076570] [2023-11-29 04:23:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:31,198 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 [2023-11-29 04:23:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:31,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:31,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:31,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:23:31,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:31,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:23:31,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:31,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132076570] [2023-11-29 04:23:31,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132076570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:31,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:31,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:23:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445877702] [2023-11-29 04:23:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:23:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:23:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:23:31,906 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:32,542 INFO L93 Difference]: Finished difference Result 349 states and 452 transitions. [2023-11-29 04:23:32,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:23:32,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-29 04:23:32,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:32,545 INFO L225 Difference]: With dead ends: 349 [2023-11-29 04:23:32,545 INFO L226 Difference]: Without dead ends: 349 [2023-11-29 04:23:32,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:23:32,546 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 100 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 615 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:23:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-29 04:23:32,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344. [2023-11-29 04:23:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 316 states have (on average 1.2784810126582278) internal successors, (404), 333 states have internal predecessors, (404), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-29 04:23:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 448 transitions. [2023-11-29 04:23:32,562 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 448 transitions. Word has length 66 [2023-11-29 04:23:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:32,563 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 448 transitions. [2023-11-29 04:23:32,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:23:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 448 transitions. [2023-11-29 04:23:32,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 04:23:32,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:32,566 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] [2023-11-29 04:23:32,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:23:32,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:32,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:32,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:32,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1910426386, now seen corresponding path program 1 times [2023-11-29 04:23:32,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:32,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433380743] [2023-11-29 04:23:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:32,769 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 [2023-11-29 04:23:32,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:32,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:32,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:33,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:23:33,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:23:33,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:23:33,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:33,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433380743] [2023-11-29 04:23:33,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433380743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:23:33,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:23:33,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:23:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582603067] [2023-11-29 04:23:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:23:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:23:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:23:33,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:23:33,315 INFO L87 Difference]: Start difference. First operand 344 states and 448 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:23:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:33,421 INFO L93 Difference]: Finished difference Result 346 states and 451 transitions. [2023-11-29 04:23:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:23:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-11-29 04:23:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:33,424 INFO L225 Difference]: With dead ends: 346 [2023-11-29 04:23:33,424 INFO L226 Difference]: Without dead ends: 346 [2023-11-29 04:23:33,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:23:33,426 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:33,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 887 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:23:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-29 04:23:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-11-29 04:23:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 317 states have (on average 1.2807570977917981) internal successors, (406), 335 states have internal predecessors, (406), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 451 transitions. [2023-11-29 04:23:33,439 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 451 transitions. Word has length 79 [2023-11-29 04:23:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:33,440 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 451 transitions. [2023-11-29 04:23:33,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:23:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 451 transitions. [2023-11-29 04:23:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 04:23:33,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:33,443 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] [2023-11-29 04:23:33,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:33,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:33,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1629368750, now seen corresponding path program 1 times [2023-11-29 04:23:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940718825] [2023-11-29 04:23:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:23:33,649 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 [2023-11-29 04:23:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:33,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:33,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:23:34,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:23:34,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:23:34,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:34,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:23:34,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:34,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940718825] [2023-11-29 04:23:34,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940718825] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:34,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:34,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:23:34,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194679438] [2023-11-29 04:23:34,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:34,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:23:34,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:34,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:23:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:23:34,219 INFO L87 Difference]: Start difference. First operand 346 states and 451 transitions. Second operand has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:34,447 INFO L93 Difference]: Finished difference Result 355 states and 465 transitions. [2023-11-29 04:23:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:23:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81 [2023-11-29 04:23:34,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:34,451 INFO L225 Difference]: With dead ends: 355 [2023-11-29 04:23:34,451 INFO L226 Difference]: Without dead ends: 355 [2023-11-29 04:23:34,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:23:34,452 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 6 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:34,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 887 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:23:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-29 04:23:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2023-11-29 04:23:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 324 states have (on average 1.2932098765432098) internal successors, (419), 342 states have internal predecessors, (419), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 464 transitions. [2023-11-29 04:23:34,465 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 464 transitions. Word has length 81 [2023-11-29 04:23:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 464 transitions. [2023-11-29 04:23:34,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 464 transitions. [2023-11-29 04:23:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 04:23:34,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:34,468 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] [2023-11-29 04:23:34,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:23:34,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:34,672 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:34,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1941505074, now seen corresponding path program 2 times [2023-11-29 04:23:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183559925] [2023-11-29 04:23:34,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:23:34,673 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 [2023-11-29 04:23:34,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:34,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:34,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:35,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:23:35,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:35,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:23:35,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:23:35,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:23:35,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183559925] [2023-11-29 04:23:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183559925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:35,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 04:23:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792626481] [2023-11-29 04:23:35,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:23:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:35,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:23:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:23:35,903 INFO L87 Difference]: Start difference. First operand 354 states and 464 transitions. Second operand has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:23:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:36,192 INFO L93 Difference]: Finished difference Result 361 states and 475 transitions. [2023-11-29 04:23:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:23:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 85 [2023-11-29 04:23:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:36,196 INFO L225 Difference]: With dead ends: 361 [2023-11-29 04:23:36,196 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 04:23:36,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:23:36,197 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 12 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:36,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1177 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:23:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 04:23:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 358. [2023-11-29 04:23:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 328 states have (on average 1.3018292682926829) internal successors, (427), 346 states have internal predecessors, (427), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 472 transitions. [2023-11-29 04:23:36,208 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 472 transitions. Word has length 85 [2023-11-29 04:23:36,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:36,208 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 472 transitions. [2023-11-29 04:23:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:23:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 472 transitions. [2023-11-29 04:23:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 04:23:36,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:36,210 INFO L195 NwaCegarLoop]: trace histogram [10, 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] [2023-11-29 04:23:36,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:36,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:36,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1871370510, now seen corresponding path program 3 times [2023-11-29 04:23:36,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955853871] [2023-11-29 04:23:36,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:23:36,413 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 [2023-11-29 04:23:36,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:36,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:36,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 04:23:38,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 04:23:38,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:38,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:23:38,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:23:38,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:23:39,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955853871] [2023-11-29 04:23:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955853871] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:39,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-29 04:23:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377425960] [2023-11-29 04:23:39,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:23:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:23:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:23:39,065 INFO L87 Difference]: Start difference. First operand 358 states and 472 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:23:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:40,229 INFO L93 Difference]: Finished difference Result 379 states and 502 transitions. [2023-11-29 04:23:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:23:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 89 [2023-11-29 04:23:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:40,233 INFO L225 Difference]: With dead ends: 379 [2023-11-29 04:23:40,233 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 04:23:40,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=369, Invalid=687, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:23:40,234 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 23 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:40,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2340 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:23:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 04:23:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-11-29 04:23:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 339 states have (on average 1.3185840707964602) internal successors, (447), 357 states have internal predecessors, (447), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 492 transitions. [2023-11-29 04:23:40,248 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 492 transitions. Word has length 89 [2023-11-29 04:23:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:40,249 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 492 transitions. [2023-11-29 04:23:40,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:23:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 492 transitions. [2023-11-29 04:23:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 04:23:40,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:40,250 INFO L195 NwaCegarLoop]: trace histogram [18, 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] [2023-11-29 04:23:40,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 04:23:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:40,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:40,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1011921806, now seen corresponding path program 4 times [2023-11-29 04:23:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110741085] [2023-11-29 04:23:40,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:23:40,457 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 [2023-11-29 04:23:40,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:40,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:40,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 04:23:40,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:23:40,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:40,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:23:40,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 04:23:41,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 04:23:41,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:41,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110741085] [2023-11-29 04:23:41,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110741085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:41,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:41,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 04:23:41,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924808916] [2023-11-29 04:23:41,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:41,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:23:41,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:23:41,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:23:41,251 INFO L87 Difference]: Start difference. First operand 369 states and 492 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:42,023 INFO L93 Difference]: Finished difference Result 379 states and 503 transitions. [2023-11-29 04:23:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 04:23:42,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2023-11-29 04:23:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:42,025 INFO L225 Difference]: With dead ends: 379 [2023-11-29 04:23:42,025 INFO L226 Difference]: Without dead ends: 377 [2023-11-29 04:23:42,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:23:42,026 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 13 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:42,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1769 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:23:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-29 04:23:42,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2023-11-29 04:23:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 342 states have (on average 1.3099415204678362) internal successors, (448), 360 states have internal predecessors, (448), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 493 transitions. [2023-11-29 04:23:42,037 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 493 transitions. Word has length 97 [2023-11-29 04:23:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 493 transitions. [2023-11-29 04:23:42,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 493 transitions. [2023-11-29 04:23:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:23:42,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:42,039 INFO L195 NwaCegarLoop]: trace histogram [24, 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] [2023-11-29 04:23:42,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:23:42,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:42,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:42,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1118389778, now seen corresponding path program 5 times [2023-11-29 04:23:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:42,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016726792] [2023-11-29 04:23:42,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:23:42,241 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 [2023-11-29 04:23:42,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:42,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:42,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 04:23:43,326 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-29 04:23:43,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:43,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:23:43,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 167 proven. 55 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 04:23:43,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 04:23:44,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:44,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016726792] [2023-11-29 04:23:44,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016726792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:44,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:44,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 04:23:44,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734751976] [2023-11-29 04:23:44,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:44,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:23:44,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:23:44,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:23:44,093 INFO L87 Difference]: Start difference. First operand 372 states and 493 transitions. Second operand has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:23:46,528 INFO L93 Difference]: Finished difference Result 396 states and 527 transitions. [2023-11-29 04:23:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 04:23:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 103 [2023-11-29 04:23:46,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:23:46,531 INFO L225 Difference]: With dead ends: 396 [2023-11-29 04:23:46,531 INFO L226 Difference]: Without dead ends: 394 [2023-11-29 04:23:46,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=998, Invalid=2194, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 04:23:46,533 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 23 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:23:46,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4118 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:23:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-29 04:23:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 384. [2023-11-29 04:23:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 354 states have (on average 1.2994350282485876) internal successors, (460), 372 states have internal predecessors, (460), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:23:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 505 transitions. [2023-11-29 04:23:46,541 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 505 transitions. Word has length 103 [2023-11-29 04:23:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:23:46,542 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 505 transitions. [2023-11-29 04:23:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:23:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 505 transitions. [2023-11-29 04:23:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 04:23:46,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:23:46,543 INFO L195 NwaCegarLoop]: trace histogram [36, 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] [2023-11-29 04:23:46,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 04:23:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:23:46,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:23:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:23:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash -924455250, now seen corresponding path program 6 times [2023-11-29 04:23:46,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:23:46,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973678903] [2023-11-29 04:23:46,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:23:46,745 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 [2023-11-29 04:23:46,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:23:46,746 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:23:46,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 04:23:51,317 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-29 04:23:51,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:23:51,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:23:51,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:23:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 347 proven. 253 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 04:23:51,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:23:54,323 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 599 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 04:23:54,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:23:54,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973678903] [2023-11-29 04:23:54,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973678903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:23:54,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:23:54,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 04:23:54,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562026408] [2023-11-29 04:23:54,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:23:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:23:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:23:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:23:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 04:23:54,327 INFO L87 Difference]: Start difference. First operand 384 states and 505 transitions. Second operand has 50 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 50 states have internal predecessors, (122), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:24:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:24:05,445 INFO L93 Difference]: Finished difference Result 440 states and 599 transitions. [2023-11-29 04:24:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-29 04:24:05,446 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 50 states have internal predecessors, (122), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 115 [2023-11-29 04:24:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:24:05,448 INFO L225 Difference]: With dead ends: 440 [2023-11-29 04:24:05,448 INFO L226 Difference]: Without dead ends: 437 [2023-11-29 04:24:05,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=2906, Invalid=6214, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 04:24:05,451 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 49 mSDsluCounter, 6739 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 7035 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:24:05,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 7035 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 04:24:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-29 04:24:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 417. [2023-11-29 04:24:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 387 states have (on average 1.297157622739018) internal successors, (502), 405 states have internal predecessors, (502), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:24:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 547 transitions. [2023-11-29 04:24:05,468 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 547 transitions. Word has length 115 [2023-11-29 04:24:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:24:05,468 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 547 transitions. [2023-11-29 04:24:05,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 50 states have internal predecessors, (122), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:24:05,469 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 547 transitions. [2023-11-29 04:24:05,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-29 04:24:05,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:24:05,471 INFO L195 NwaCegarLoop]: trace histogram [58, 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] [2023-11-29 04:24:05,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 04:24:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:05,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:24:05,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2090889714, now seen corresponding path program 7 times [2023-11-29 04:24:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:24:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367130834] [2023-11-29 04:24:05,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 04:24:05,672 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 [2023-11-29 04:24:05,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:24:05,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:24:05,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 04:24:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:24:06,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:24:06,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:24:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 676 proven. 105 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:24:06,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:24:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 676 proven. 105 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:24:07,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:24:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367130834] [2023-11-29 04:24:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367130834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:24:07,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:24:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-29 04:24:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666104468] [2023-11-29 04:24:07,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:24:07,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 04:24:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:24:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 04:24:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:24:07,844 INFO L87 Difference]: Start difference. First operand 417 states and 547 transitions. Second operand has 34 states, 32 states have (on average 3.21875) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:24:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:24:11,770 INFO L93 Difference]: Finished difference Result 438 states and 575 transitions. [2023-11-29 04:24:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 04:24:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.21875) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 137 [2023-11-29 04:24:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:24:11,773 INFO L225 Difference]: With dead ends: 438 [2023-11-29 04:24:11,773 INFO L226 Difference]: Without dead ends: 438 [2023-11-29 04:24:11,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1782, Invalid=4070, Unknown=0, NotChecked=0, Total=5852 [2023-11-29 04:24:11,776 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 35 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:24:11,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 4693 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:24:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-29 04:24:11,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 424. [2023-11-29 04:24:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 394 states have (on average 1.3096446700507614) internal successors, (516), 412 states have internal predecessors, (516), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:24:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 561 transitions. [2023-11-29 04:24:11,787 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 561 transitions. Word has length 137 [2023-11-29 04:24:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:24:11,788 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 561 transitions. [2023-11-29 04:24:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.21875) internal successors, (103), 34 states have internal predecessors, (103), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:24:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 561 transitions. [2023-11-29 04:24:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 04:24:11,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:24:11,789 INFO L195 NwaCegarLoop]: trace histogram [74, 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] [2023-11-29 04:24:11,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 04:24:11,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:11,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:24:11,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:11,990 INFO L85 PathProgramCache]: Analyzing trace with hash -492911858, now seen corresponding path program 8 times [2023-11-29 04:24:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:24:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271751211] [2023-11-29 04:24:11,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:24:11,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:24:11,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:24:11,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 04:24:14,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:24:14,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:24:14,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 04:24:14,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:24:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1396 proven. 465 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:24:15,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:24:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 1396 proven. 465 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:24:18,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:24:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271751211] [2023-11-29 04:24:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271751211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:24:18,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:24:18,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2023-11-29 04:24:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979587993] [2023-11-29 04:24:18,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:24:18,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-29 04:24:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:24:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-29 04:24:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 04:24:18,462 INFO L87 Difference]: Start difference. First operand 424 states and 561 transitions. Second operand has 66 states, 64 states have (on average 2.109375) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:24:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:24:35,299 INFO L93 Difference]: Finished difference Result 485 states and 654 transitions. [2023-11-29 04:24:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-29 04:24:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 2.109375) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 153 [2023-11-29 04:24:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:24:35,302 INFO L225 Difference]: With dead ends: 485 [2023-11-29 04:24:35,302 INFO L226 Difference]: Without dead ends: 485 [2023-11-29 04:24:35,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5774 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=7091, Invalid=17089, Unknown=0, NotChecked=0, Total=24180 [2023-11-29 04:24:35,316 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 67 mSDsluCounter, 9379 mSDsCounter, 0 mSdLazyCounter, 3168 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 9675 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:24:35,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 9675 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3168 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 04:24:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-29 04:24:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 456. [2023-11-29 04:24:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 426 states have (on average 1.3615023474178405) internal successors, (580), 444 states have internal predecessors, (580), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:24:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 625 transitions. [2023-11-29 04:24:35,330 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 625 transitions. Word has length 153 [2023-11-29 04:24:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:24:35,331 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 625 transitions. [2023-11-29 04:24:35,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 2.109375) internal successors, (135), 66 states have internal predecessors, (135), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:24:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 625 transitions. [2023-11-29 04:24:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-29 04:24:35,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:24:35,333 INFO L195 NwaCegarLoop]: trace histogram [106, 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] [2023-11-29 04:24:35,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-29 04:24:35,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:24:35,534 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:24:35,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:24:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1543449870, now seen corresponding path program 9 times [2023-11-29 04:24:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:24:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125495537] [2023-11-29 04:24:35,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:24:35,536 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 [2023-11-29 04:24:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:24:35,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:24:35,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 04:25:23,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-11-29 04:25:23,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:25:23,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 04:25:23,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:25:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5780 backedges. 2836 proven. 1953 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:25:26,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:25:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5780 backedges. 2836 proven. 1953 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:25:41,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:25:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125495537] [2023-11-29 04:25:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125495537] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:25:41,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:25:41,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 130 [2023-11-29 04:25:41,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379322268] [2023-11-29 04:25:41,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:25:41,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-29 04:25:41,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:25:41,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-29 04:25:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4353, Invalid=12417, Unknown=0, NotChecked=0, Total=16770 [2023-11-29 04:25:41,941 INFO L87 Difference]: Start difference. First operand 456 states and 625 transitions. Second operand has 130 states, 128 states have (on average 1.5546875) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:27:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:27,173 INFO L93 Difference]: Finished difference Result 616 states and 864 transitions. [2023-11-29 04:27:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2023-11-29 04:27:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 128 states have (on average 1.5546875) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 185 [2023-11-29 04:27:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:27,177 INFO L225 Difference]: With dead ends: 616 [2023-11-29 04:27:27,177 INFO L226 Difference]: Without dead ends: 614 [2023-11-29 04:27:27,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12032 ImplicationChecksByTransitivity, 95.7s TimeCoverageRelationStatistics Valid=20865, Invalid=44927, Unknown=0, NotChecked=0, Total=65792 [2023-11-29 04:27:27,185 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 148 mSDsluCounter, 18690 mSDsCounter, 0 mSdLazyCounter, 13519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 18985 SdHoareTripleChecker+Invalid, 13597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 13519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:27,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 18985 Invalid, 13597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 13519 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2023-11-29 04:27:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-29 04:27:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 537. [2023-11-29 04:27:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 507 states have (on average 1.4595660749506902) internal successors, (740), 525 states have internal predecessors, (740), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-29 04:27:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 785 transitions. [2023-11-29 04:27:27,198 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 785 transitions. Word has length 185 [2023-11-29 04:27:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 785 transitions. [2023-11-29 04:27:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 128 states have (on average 1.5546875) internal successors, (199), 130 states have internal predecessors, (199), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:27:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 785 transitions. [2023-11-29 04:27:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-29 04:27:27,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:27,201 INFO L195 NwaCegarLoop]: trace histogram [170, 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] [2023-11-29 04:27:27,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 04:27:27,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:27:27,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-29 04:27:27,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1783103758, now seen corresponding path program 10 times [2023-11-29 04:27:27,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:27:27,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203272732] [2023-11-29 04:27:27,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:27:27,403 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 [2023-11-29 04:27:27,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:27:27,404 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:27:27,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c6eeeaa-957a-4ed4-aa20-412ed5ae8050/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 04:27:29,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:27:29,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:27:29,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 129 conjunts are in the unsatisfiable core [2023-11-29 04:27:29,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14708 backedges. 5716 proven. 8001 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:27:41,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:49,326 WARN L293 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 386 DAG size of output: 385 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-29 04:28:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14708 backedges. 5716 proven. 8001 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2023-11-29 04:28:29,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:28:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203272732] [2023-11-29 04:28:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203272732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:29,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:28:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 258 [2023-11-29 04:28:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271312621] [2023-11-29 04:28:29,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2023-11-29 04:28:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:28:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2023-11-29 04:28:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16897, Invalid=49409, Unknown=0, NotChecked=0, Total=66306 [2023-11-29 04:28:29,611 INFO L87 Difference]: Start difference. First operand 537 states and 785 transitions. Second operand has 258 states, 256 states have (on average 1.27734375) internal successors, (327), 258 states have internal predecessors, (327), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)