./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.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_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme --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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:24,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:24,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-26 12:01:24,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:24,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:24,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:24,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:24,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:24,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:24,689 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:24,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:24,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:24,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:24,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:24,694 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:24,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:24,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:24,696 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:24,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:24,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:24,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:24,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:24,699 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:01:24,699 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:01:24,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:24,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:24,701 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:01:24,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:24,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:24,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:24,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:24,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:24,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:24,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:24,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:24,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:24,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:24,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:24,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:24,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:24,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:24,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:24,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:24,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:24,708 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_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2023-11-26 12:01:25,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:25,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:25,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:25,058 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:25,058 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:25,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2023-11-26 12:01:28,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:28,553 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:28,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2023-11-26 12:01:28,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/c5238bfdc/7484ece092584f29b5f05af5d14d8e6c/FLAG4487a1ec4 [2023-11-26 12:01:28,592 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/c5238bfdc/7484ece092584f29b5f05af5d14d8e6c [2023-11-26 12:01:28,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:28,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:28,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:28,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:28,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:28,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:28" (1/1) ... [2023-11-26 12:01:28,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@173cf40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:28, skipping insertion in model container [2023-11-26 12:01:28,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:28" (1/1) ... [2023-11-26 12:01:28,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:29,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:29,382 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) [2023-11-26 12:01:29,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1471c908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:29, skipping insertion in model container [2023-11-26 12:01:29,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:29,383 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:01:29,385 INFO L158 Benchmark]: Toolchain (without parser) took 788.13ms. Allocated memory is still 169.9MB. Free memory was 120.8MB in the beginning and 99.9MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:01:29,386 INFO L158 Benchmark]: CDTParser took 1.30ms. Allocated memory is still 121.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:01:29,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.16ms. Allocated memory is still 169.9MB. Free memory was 120.1MB in the beginning and 99.9MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 12:01:29,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30ms. Allocated memory is still 121.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.16ms. Allocated memory is still 169.9MB. Free memory was 120.1MB in the beginning and 99.9MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme --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 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:31,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:31,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-26 12:01:31,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:31,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:32,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:32,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:32,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:32,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:01:32,038 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:01:32,039 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:32,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:32,040 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:32,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:32,042 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:32,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:32,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:32,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:32,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:32,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:32,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:32,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:32,047 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:01:32,048 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:01:32,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:32,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:32,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:01:32,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:01:32,050 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:01:32,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:32,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:32,052 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:32,052 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:32,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:32,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:32,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:01:32,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:32,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:32,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:32,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:32,055 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:01:32,056 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:01:32,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:32,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:32,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:32,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:32,057 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:01:32,057 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_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1036b64b29bd922a31935b87e7c90d1acbba8f8044f40e2525bb03d5de1e7f [2023-11-26 12:01:32,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:32,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:32,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:32,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:32,520 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:32,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2023-11-26 12:01:35,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:36,196 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:36,197 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-2.i [2023-11-26 12:01:36,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/ad23b0092/f39c03cd567c463886813217efb0094b/FLAGcb2e60773 [2023-11-26 12:01:36,248 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/data/ad23b0092/f39c03cd567c463886813217efb0094b [2023-11-26 12:01:36,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:36,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:36,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:36,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:36,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:36,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64aca6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36, skipping insertion in model container [2023-11-26 12:01:36,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:37,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:37,062 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:01:37,076 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:37,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:37,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:37,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:37,349 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:01:37,357 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:37,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37 WrapperNode [2023-11-26 12:01:37,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:37,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:37,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:37,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:37,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,529 INFO L138 Inliner]: procedures = 180, calls = 338, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1190 [2023-11-26 12:01:37,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:37,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:37,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:37,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:37,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,664 INFO L175 MemorySlicer]: Split 308 memory accesses to 4 slices as follows [34, 2, 267, 5]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 63 writes are split as follows [4, 0, 58, 1]. [2023-11-26 12:01:37,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:37,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:37,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:37,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:37,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (1/1) ... [2023-11-26 12:01:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:37,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:37,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 12:01:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 12:01:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 12:01:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 12:01:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:01:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:01:37,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:01:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 12:01:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 12:01:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 12:01:37,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 12:01:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 12:01:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 12:01:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 12:01:37,893 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 12:01:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:01:37,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:01:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:01:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:01:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:01:37,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:01:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 12:01:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:01:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:01:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:01:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:01:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:01:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:01:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:01:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:01:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:37,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:38,167 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:38,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:48,010 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:48,060 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:48,060 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-26 12:01:48,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:48 BoogieIcfgContainer [2023-11-26 12:01:48,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:48,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:48,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:48,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:48,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:36" (1/3) ... [2023-11-26 12:01:48,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126db8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:48, skipping insertion in model container [2023-11-26 12:01:48,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37" (2/3) ... [2023-11-26 12:01:48,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126db8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:48, skipping insertion in model container [2023-11-26 12:01:48,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:48" (3/3) ... [2023-11-26 12:01:48,071 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-2.i [2023-11-26 12:01:48,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:48,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:01:48,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:48,150 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;@514a2112, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:48,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 12:01:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 222 states have (on average 1.6801801801801801) internal successors, (373), 231 states have internal predecessors, (373), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 12:01:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 12:01:48,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:48,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:48,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:01:48,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2127101629, now seen corresponding path program 1 times [2023-11-26 12:01:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:01:48,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684957641] [2023-11-26 12:01:48,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:48,185 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 [2023-11-26 12:01:48,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:01:48,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:01:48,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:01:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:48,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:01:48,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:48,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:48,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:01:48,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684957641] [2023-11-26 12:01:48,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684957641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:48,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:48,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092845847] [2023-11-26 12:01:48,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:01:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:01:48,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:01:48,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:48,599 INFO L87 Difference]: Start difference. First operand has 238 states, 222 states have (on average 1.6801801801801801) internal successors, (373), 231 states have internal predecessors, (373), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:01:48,661 INFO L93 Difference]: Finished difference Result 236 states and 312 transitions. [2023-11-26 12:01:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:01:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-26 12:01:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:01:48,684 INFO L225 Difference]: With dead ends: 236 [2023-11-26 12:01:48,684 INFO L226 Difference]: Without dead ends: 235 [2023-11-26 12:01:48,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:01:48,690 INFO L413 NwaCegarLoop]: 307 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, 307 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 [2023-11-26 12:01:48,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 307 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:01:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-26 12:01:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-11-26 12:01:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 221 states have (on average 1.3257918552036199) internal successors, (293), 228 states have internal predecessors, (293), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:01:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 311 transitions. [2023-11-26 12:01:48,779 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 311 transitions. Word has length 10 [2023-11-26 12:01:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:01:48,779 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 311 transitions. [2023-11-26 12:01:48,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 311 transitions. [2023-11-26 12:01:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 12:01:48,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:01:48,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:48,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:01:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:01:48,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:01:48,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 415522240, now seen corresponding path program 1 times [2023-11-26 12:01:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:01:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14719180] [2023-11-26 12:01:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:48,988 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 [2023-11-26 12:01:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:01:48,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:01:49,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:01:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:01:49,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:49,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:49,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:01:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14719180] [2023-11-26 12:01:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14719180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:49,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370379438] [2023-11-26 12:01:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:49,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:01:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:01:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:01:49,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:01:49,426 INFO L87 Difference]: Start difference. First operand 235 states and 311 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:53,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:02:00,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:02:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:00,124 INFO L93 Difference]: Finished difference Result 381 states and 501 transitions. [2023-11-26 12:02:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 12:02:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:00,132 INFO L225 Difference]: With dead ends: 381 [2023-11-26 12:02:00,132 INFO L226 Difference]: Without dead ends: 381 [2023-11-26 12:02:00,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:00,134 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 194 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:00,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 857 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2023-11-26 12:02:00,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-26 12:02:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 349. [2023-11-26 12:02:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 335 states have (on average 1.319402985074627) internal successors, (442), 342 states have internal predecessors, (442), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:02:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 460 transitions. [2023-11-26 12:02:00,158 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 460 transitions. Word has length 15 [2023-11-26 12:02:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:00,159 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 460 transitions. [2023-11-26 12:02:00,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 460 transitions. [2023-11-26 12:02:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:02:00,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:00,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:00,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:00,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:00,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1237148445, now seen corresponding path program 1 times [2023-11-26 12:02:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125610877] [2023-11-26 12:02:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:00,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:00,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:00,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:00,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:02:00,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:00,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:00,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:00,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:00,694 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 [2023-11-26 12:02:00,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:02:00,782 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 [2023-11-26 12:02:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:00,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:00,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125610877] [2023-11-26 12:02:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125610877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236279484] [2023-11-26 12:02:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:00,809 INFO L87 Difference]: Start difference. First operand 349 states and 460 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-26 12:02:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:01,557 INFO L93 Difference]: Finished difference Result 552 states and 735 transitions. [2023-11-26 12:02:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-26 12:02:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:01,563 INFO L225 Difference]: With dead ends: 552 [2023-11-26 12:02:01,563 INFO L226 Difference]: Without dead ends: 552 [2023-11-26 12:02:01,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:01,565 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 274 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:01,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 911 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:02:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-26 12:02:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 348. [2023-11-26 12:02:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 334 states have (on average 1.3173652694610778) internal successors, (440), 341 states have internal predecessors, (440), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:02:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 458 transitions. [2023-11-26 12:02:01,591 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 458 transitions. Word has length 14 [2023-11-26 12:02:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:01,592 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 458 transitions. [2023-11-26 12:02:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-26 12:02:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 458 transitions. [2023-11-26 12:02:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 12:02:01,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:01,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:01,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:01,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:01,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:01,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1389304947, now seen corresponding path program 1 times [2023-11-26 12:02:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:01,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977600524] [2023-11-26 12:02:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:01,804 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 [2023-11-26 12:02:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:01,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:01,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:02,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:02,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:02:02,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:02,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977600524] [2023-11-26 12:02:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977600524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:02,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633936571] [2023-11-26 12:02:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:02,477 INFO L87 Difference]: Start difference. First operand 348 states and 458 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:02,671 INFO L93 Difference]: Finished difference Result 356 states and 450 transitions. [2023-11-26 12:02:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2023-11-26 12:02:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:02,675 INFO L225 Difference]: With dead ends: 356 [2023-11-26 12:02:02,675 INFO L226 Difference]: Without dead ends: 356 [2023-11-26 12:02:02,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:02,677 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 36 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:02,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 810 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:02:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-26 12:02:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2023-11-26 12:02:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 340 states have (on average 1.2647058823529411) internal successors, (430), 347 states have internal predecessors, (430), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 12:02:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 448 transitions. [2023-11-26 12:02:02,691 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 448 transitions. Word has length 84 [2023-11-26 12:02:02,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:02,692 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 448 transitions. [2023-11-26 12:02:02,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 448 transitions. [2023-11-26 12:02:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-26 12:02:02,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:02,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:02,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:02,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:02,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:02,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1545738599, now seen corresponding path program 1 times [2023-11-26 12:02:02,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:02,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576042867] [2023-11-26 12:02:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:02,908 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 [2023-11-26 12:02:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:02,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:02,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:03,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:03,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:03,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:03,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576042867] [2023-11-26 12:02:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576042867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:03,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:03,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268430877] [2023-11-26 12:02:03,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:03,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:03,578 INFO L87 Difference]: Start difference. First operand 354 states and 448 transitions. Second operand has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:02:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:03,675 INFO L93 Difference]: Finished difference Result 356 states and 451 transitions. [2023-11-26 12:02:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2023-11-26 12:02:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:03,679 INFO L225 Difference]: With dead ends: 356 [2023-11-26 12:02:03,679 INFO L226 Difference]: Without dead ends: 356 [2023-11-26 12:02:03,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:03,681 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 878 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 [2023-11-26 12:02:03,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 878 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:02:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-26 12:02:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2023-11-26 12:02:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 341 states have (on average 1.2668621700879765) internal successors, (432), 349 states have internal predecessors, (432), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 451 transitions. [2023-11-26 12:02:03,694 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 451 transitions. Word has length 84 [2023-11-26 12:02:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:03,694 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 451 transitions. [2023-11-26 12:02:03,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:02:03,695 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 451 transitions. [2023-11-26 12:02:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-26 12:02:03,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:03,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:03,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:03,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:03,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 372135719, now seen corresponding path program 1 times [2023-11-26 12:02:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734117096] [2023-11-26 12:02:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:03,914 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 [2023-11-26 12:02:03,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:03,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:04,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:02:04,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:02:04,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:02:04,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:04,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734117096] [2023-11-26 12:02:04,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734117096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:04,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:04,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:02:04,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530910806] [2023-11-26 12:02:04,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:04,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:02:04,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:02:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:02:04,729 INFO L87 Difference]: Start difference. First operand 356 states and 451 transitions. Second operand has 8 states, 6 states have (on average 14.333333333333334) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:05,050 INFO L93 Difference]: Finished difference Result 365 states and 465 transitions. [2023-11-26 12:02:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:02:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 14.333333333333334) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2023-11-26 12:02:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:05,054 INFO L225 Difference]: With dead ends: 365 [2023-11-26 12:02:05,055 INFO L226 Difference]: Without dead ends: 365 [2023-11-26 12:02:05,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:02:05,056 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 6 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:05,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1458 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:02:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-26 12:02:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 364. [2023-11-26 12:02:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 348 states have (on average 1.278735632183908) internal successors, (445), 356 states have internal predecessors, (445), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 464 transitions. [2023-11-26 12:02:05,068 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 464 transitions. Word has length 86 [2023-11-26 12:02:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:05,069 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 464 transitions. [2023-11-26 12:02:05,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 14.333333333333334) internal successors, (86), 8 states have internal predecessors, (86), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 464 transitions. [2023-11-26 12:02:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 12:02:05,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:05,071 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:05,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:05,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:05,284 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:05,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 627343623, now seen corresponding path program 2 times [2023-11-26 12:02:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:05,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777176212] [2023-11-26 12:02:05,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:02:05,286 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 [2023-11-26 12:02:05,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:05,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:05,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:05,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:02:05,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:02:05,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:02:05,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:05,782 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:05,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:05,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:02:05,789 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 [2023-11-26 12:02:05,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:02:05,879 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 [2023-11-26 12:02:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-26 12:02:05,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:05,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:05,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777176212] [2023-11-26 12:02:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777176212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:05,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:05,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:05,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178858160] [2023-11-26 12:02:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:05,907 INFO L87 Difference]: Start difference. First operand 364 states and 464 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:06,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:06,693 INFO L93 Difference]: Finished difference Result 524 states and 675 transitions. [2023-11-26 12:02:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:06,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2023-11-26 12:02:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:06,698 INFO L225 Difference]: With dead ends: 524 [2023-11-26 12:02:06,698 INFO L226 Difference]: Without dead ends: 524 [2023-11-26 12:02:06,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:06,700 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 207 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:06,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 825 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 12:02:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-26 12:02:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 366. [2023-11-26 12:02:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 350 states have (on average 1.2771428571428571) internal successors, (447), 358 states have internal predecessors, (447), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 466 transitions. [2023-11-26 12:02:06,714 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 466 transitions. Word has length 90 [2023-11-26 12:02:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:06,715 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 466 transitions. [2023-11-26 12:02:06,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 466 transitions. [2023-11-26 12:02:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 12:02:06,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:06,717 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:06,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:06,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:06,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1218446764, now seen corresponding path program 1 times [2023-11-26 12:02:06,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:06,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824868496] [2023-11-26 12:02:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:06,924 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 [2023-11-26 12:02:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:06,926 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:06,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:07,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:02:07,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:02:07,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:02:08,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824868496] [2023-11-26 12:02:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824868496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:08,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 12:02:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269972457] [2023-11-26 12:02:08,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:02:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:02:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:02:08,020 INFO L87 Difference]: Start difference. First operand 366 states and 466 transitions. Second operand has 14 states, 12 states have (on average 10.416666666666666) internal successors, (125), 14 states have internal predecessors, (125), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:08,906 INFO L93 Difference]: Finished difference Result 381 states and 488 transitions. [2023-11-26 12:02:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 12:02:08,907 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.416666666666666) internal successors, (125), 14 states have internal predecessors, (125), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 122 [2023-11-26 12:02:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:08,909 INFO L225 Difference]: With dead ends: 381 [2023-11-26 12:02:08,909 INFO L226 Difference]: Without dead ends: 379 [2023-11-26 12:02:08,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-26 12:02:08,911 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 13 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:08,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1751 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:02:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-26 12:02:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2023-11-26 12:02:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 359 states have (on average 1.2785515320334262) internal successors, (459), 367 states have internal predecessors, (459), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 478 transitions. [2023-11-26 12:02:08,924 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 478 transitions. Word has length 122 [2023-11-26 12:02:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:08,924 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 478 transitions. [2023-11-26 12:02:08,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.416666666666666) internal successors, (125), 14 states have internal predecessors, (125), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 478 transitions. [2023-11-26 12:02:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-26 12:02:08,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:08,927 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:08,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:09,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:09,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1114625109, now seen corresponding path program 2 times [2023-11-26 12:02:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:09,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589400428] [2023-11-26 12:02:09,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:02:09,139 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 [2023-11-26 12:02:09,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:09,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:09,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:09,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:02:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:02:09,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:09,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-26 12:02:09,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:09,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589400428] [2023-11-26 12:02:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589400428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:09,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:09,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272534883] [2023-11-26 12:02:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:09,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:09,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:09,638 INFO L87 Difference]: Start difference. First operand 375 states and 478 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:09,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:09,800 INFO L93 Difference]: Finished difference Result 383 states and 470 transitions. [2023-11-26 12:02:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:09,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 131 [2023-11-26 12:02:09,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:09,803 INFO L225 Difference]: With dead ends: 383 [2023-11-26 12:02:09,803 INFO L226 Difference]: Without dead ends: 383 [2023-11-26 12:02:09,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:09,805 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 36 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 777 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 [2023-11-26 12:02:09,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 777 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:02:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-26 12:02:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2023-11-26 12:02:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 365 states have (on average 1.2301369863013698) internal successors, (449), 373 states have internal predecessors, (449), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:09,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 468 transitions. [2023-11-26 12:02:09,819 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 468 transitions. Word has length 131 [2023-11-26 12:02:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:09,819 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 468 transitions. [2023-11-26 12:02:09,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 468 transitions. [2023-11-26 12:02:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-26 12:02:09,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:09,822 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:09,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:10,026 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:10,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -16822625, now seen corresponding path program 1 times [2023-11-26 12:02:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:10,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691691583] [2023-11-26 12:02:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:10,027 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 [2023-11-26 12:02:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:10,028 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:10,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:10,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:02:10,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:11,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:02:12,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691691583] [2023-11-26 12:02:12,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691691583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:12,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:12,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-26 12:02:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186969354] [2023-11-26 12:02:12,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:12,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 12:02:12,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 12:02:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-26 12:02:12,073 INFO L87 Difference]: Start difference. First operand 381 states and 468 transitions. Second operand has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:15,717 INFO L93 Difference]: Finished difference Result 411 states and 514 transitions. [2023-11-26 12:02:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-26 12:02:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 131 [2023-11-26 12:02:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:15,721 INFO L225 Difference]: With dead ends: 411 [2023-11-26 12:02:15,722 INFO L226 Difference]: Without dead ends: 409 [2023-11-26 12:02:15,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2023-11-26 12:02:15,725 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 25 mSDsluCounter, 3641 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:15,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3924 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 12:02:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-26 12:02:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2023-11-26 12:02:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 383 states have (on average 1.2349869451697129) internal successors, (473), 391 states have internal predecessors, (473), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-26 12:02:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 492 transitions. [2023-11-26 12:02:15,740 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 492 transitions. Word has length 131 [2023-11-26 12:02:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:15,740 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 492 transitions. [2023-11-26 12:02:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.708333333333333) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 492 transitions. [2023-11-26 12:02:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-26 12:02:15,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:15,743 INFO L195 NwaCegarLoop]: trace histogram [33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:15,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:15,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:02:15,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 12:02:15,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash -496524353, now seen corresponding path program 2 times [2023-11-26 12:02:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663599425] [2023-11-26 12:02:15,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:02:15,956 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 [2023-11-26 12:02:15,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:15,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:02:15,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82ce7b1c-88f5-4b6f-8b84-8e2b11acf97e/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:02:17,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:02:17,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:02:17,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 12:02:17,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 280 proven. 253 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 12:02:17,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 530 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-26 12:02:20,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663599425] [2023-11-26 12:02:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663599425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:20,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:20,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-26 12:02:20,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55239189] [2023-11-26 12:02:20,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:20,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-26 12:02:20,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:20,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-26 12:02:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-26 12:02:20,766 INFO L87 Difference]: Start difference. First operand 399 states and 492 transitions. Second operand has 50 states, 48 states have (on average 3.3541666666666665) internal successors, (161), 50 states have internal predecessors, (161), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4)