./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:07,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:07,598 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:48:07,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:07,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:07,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:07,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:07,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:07,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:07,635 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:07,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:07,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:07,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:07,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:07,639 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:07,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:07,640 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:07,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:07,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:07,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:07,642 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:48:07,643 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:48:07,644 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:48:07,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:07,645 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:48:07,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:07,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:07,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:07,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:07,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:07,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:07,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:07,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:07,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:07,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:07,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:07,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:07,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:07,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:07,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:07,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:07,665 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_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2023-11-26 11:48:07,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:07,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:07,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:07,962 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:07,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:07,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-26 11:48:11,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:11,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:11,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-26 11:48:11,425 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/647e9f628/07efd1ae0bb44e01aa4d4d7a852b3a01/FLAG73b0eca6e [2023-11-26 11:48:11,440 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/647e9f628/07efd1ae0bb44e01aa4d4d7a852b3a01 [2023-11-26 11:48:11,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:11,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:11,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:11,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:11,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:11,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:11" (1/1) ... [2023-11-26 11:48:11,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7126f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:11, skipping insertion in model container [2023-11-26 11:48:11,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:11" (1/1) ... [2023-11-26 11:48:11,535 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:12,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:12,214 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 11:48:12,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76e7795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:12, skipping insertion in model container [2023-11-26 11:48:12,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:12,216 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:48:12,218 INFO L158 Benchmark]: Toolchain (without parser) took 764.05ms. Allocated memory is still 136.3MB. Free memory was 93.8MB in the beginning and 72.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:48:12,219 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:48:12,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 761.39ms. Allocated memory is still 136.3MB. Free memory was 93.3MB in the beginning and 72.8MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:48:12,221 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 761.39ms. Allocated memory is still 136.3MB. Free memory was 93.3MB in the beginning and 72.8MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:14,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:14,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 11:48:14,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:14,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:14,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:14,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:14,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:14,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:14,931 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:14,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:14,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:14,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:14,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:14,935 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:14,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:14,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:14,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:14,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:14,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:14,938 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:48:14,939 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:48:14,939 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:48:14,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:14,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:48:14,940 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:48:14,941 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:48:14,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:48:14,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:14,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:14,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:14,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:14,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:14,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:14,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:14,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:14,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:14,947 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:48:14,947 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:48:14,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:14,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:14,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:14,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:14,949 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:48:14,949 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_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2023-11-26 11:48:15,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:15,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:15,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:15,403 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:15,404 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:15,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-26 11:48:18,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:18,903 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:18,904 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-26 11:48:18,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/35ef0378a/b80ce9491f444b8484e7a44338ff73c1/FLAGd96713a34 [2023-11-26 11:48:18,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/data/35ef0378a/b80ce9491f444b8484e7a44338ff73c1 [2023-11-26 11:48:18,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:18,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:18,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:18,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:18,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:18,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:18" (1/1) ... [2023-11-26 11:48:18,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b271b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:18, skipping insertion in model container [2023-11-26 11:48:18,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:18" (1/1) ... [2023-11-26 11:48:19,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:19,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:19,735 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:48:19,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:19,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:19,902 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:19,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:20,022 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:20,030 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:20,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20 WrapperNode [2023-11-26 11:48:20,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:20,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:20,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:20,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:20,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,164 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-26 11:48:20,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:20,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:20,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:20,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:20,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,341 INFO L175 MemorySlicer]: Split 309 memory accesses to 4 slices as follows [2, 34, 5, 268]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 63 writes are split as follows [0, 4, 1, 58]. [2023-11-26 11:48:20,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:20,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:20,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:20,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:20,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (1/1) ... [2023-11-26 11:48:20,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:20,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:20,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 11:48:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 11:48:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 11:48:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 11:48:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 11:48:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 11:48:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:48:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:48:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:48:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:48:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:48:20,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:48:20,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 11:48:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 11:48:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 11:48:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 11:48:20,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 11:48:20,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 11:48:20,634 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 11:48:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 11:48:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-26 11:48:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-26 11:48:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:48:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:48:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:48:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:48:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:48:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:48:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:48:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:48:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:48:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:48:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:20,958 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:20,961 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:21,009 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:48:21,065 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:48:21,099 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:48:21,131 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 11:48:27,224 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:27,406 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:27,406 INFO L309 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-26 11:48:27,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:27 BoogieIcfgContainer [2023-11-26 11:48:27,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:27,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:27,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:27,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:27,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:18" (1/3) ... [2023-11-26 11:48:27,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c6c821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:27, skipping insertion in model container [2023-11-26 11:48:27,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:20" (2/3) ... [2023-11-26 11:48:27,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c6c821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:27, skipping insertion in model container [2023-11-26 11:48:27,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:27" (3/3) ... [2023-11-26 11:48:27,417 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2023-11-26 11:48:27,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:27,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 640 error locations. [2023-11-26 11:48:27,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:27,532 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;@332e8f25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:27,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 640 error locations. [2023-11-26 11:48:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 1187 states, 523 states have (on average 2.5181644359464626) internal successors, (1317), 1177 states have internal predecessors, (1317), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:48:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:48:27,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:27,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:48:27,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:27,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 71041, now seen corresponding path program 1 times [2023-11-26 11:48:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:27,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783053379] [2023-11-26 11:48:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:27,575 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 11:48:27,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:27,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:27,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:27,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-26 11:48:27,901 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 11:48:27,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:27,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783053379] [2023-11-26 11:48:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783053379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:27,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:48:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565121231] [2023-11-26 11:48:27,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:27,950 INFO L87 Difference]: Start difference. First operand has 1187 states, 523 states have (on average 2.5181644359464626) internal successors, (1317), 1177 states have internal predecessors, (1317), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 11:48:33,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:33,052 INFO L93 Difference]: Finished difference Result 1724 states and 1862 transitions. [2023-11-26 11:48:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:33,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 11:48:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:33,087 INFO L225 Difference]: With dead ends: 1724 [2023-11-26 11:48:33,088 INFO L226 Difference]: Without dead ends: 1723 [2023-11-26 11:48:33,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:33,093 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 588 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:33,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1554 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-26 11:48:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-11-26 11:48:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1348. [2023-11-26 11:48:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 691 states have (on average 2.345875542691751) internal successors, (1621), 1337 states have internal predecessors, (1621), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:48:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1665 transitions. [2023-11-26 11:48:33,234 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1665 transitions. Word has length 2 [2023-11-26 11:48:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:33,234 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1665 transitions. [2023-11-26 11:48:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 11:48:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1665 transitions. [2023-11-26 11:48:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 11:48:33,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:33,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 11:48:33,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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)] Ended with exit code 0 [2023-11-26 11:48:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:33,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:33,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash 71040, now seen corresponding path program 1 times [2023-11-26 11:48:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79737814] [2023-11-26 11:48:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:33,443 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 11:48:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:33,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:33,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:33,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:33,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-26 11:48:33,691 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 11:48:33,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:33,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:33,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79737814] [2023-11-26 11:48:33,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79737814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:33,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:33,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:48:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491667053] [2023-11-26 11:48:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:33,710 INFO L87 Difference]: Start difference. First operand 1348 states and 1665 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 11:48:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,343 INFO L93 Difference]: Finished difference Result 1533 states and 1859 transitions. [2023-11-26 11:48:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 11:48:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,354 INFO L225 Difference]: With dead ends: 1533 [2023-11-26 11:48:36,354 INFO L226 Difference]: Without dead ends: 1533 [2023-11-26 11:48:36,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:36,356 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1061 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 904 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-26 11:48:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2023-11-26 11:48:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1351. [2023-11-26 11:48:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 702 states have (on average 2.3133903133903133) internal successors, (1624), 1339 states have internal predecessors, (1624), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:48:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1670 transitions. [2023-11-26 11:48:36,404 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1670 transitions. Word has length 2 [2023-11-26 11:48:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:36,404 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 1670 transitions. [2023-11-26 11:48:36,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 11:48:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1670 transitions. [2023-11-26 11:48:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:48:36,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:36,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:48:36,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:36,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:36,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:36,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1186062026, now seen corresponding path program 1 times [2023-11-26 11:48:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729656692] [2023-11-26 11:48:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:36,610 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 11:48:36,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:36,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:36,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:36,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:36,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-26 11:48:36,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-26 11:48:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:48:36,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 11:48:36,939 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 11:48:36,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 11:48:36,967 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 11:48:36,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:36,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:36,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729656692] [2023-11-26 11:48:36,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729656692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453604147] [2023-11-26 11:48:36,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:36,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:36,972 INFO L87 Difference]: Start difference. First operand 1351 states and 1670 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:41,405 INFO L93 Difference]: Finished difference Result 1522 states and 1848 transitions. [2023-11-26 11:48:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:48:41,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:48:41,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:41,415 INFO L225 Difference]: With dead ends: 1522 [2023-11-26 11:48:41,415 INFO L226 Difference]: Without dead ends: 1522 [2023-11-26 11:48:41,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:41,417 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2386 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:41,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 512 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-26 11:48:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-11-26 11:48:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1167. [2023-11-26 11:48:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 529 states have (on average 2.3137996219281662) internal successors, (1224), 1156 states have internal predecessors, (1224), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:48:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1268 transitions. [2023-11-26 11:48:41,471 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1268 transitions. Word has length 6 [2023-11-26 11:48:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:41,474 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1268 transitions. [2023-11-26 11:48:41,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1268 transitions. [2023-11-26 11:48:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:48:41,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:41,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:41,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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)] Ended with exit code 0 [2023-11-26 11:48:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:41,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:41,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1886782754, now seen corresponding path program 1 times [2023-11-26 11:48:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136122906] [2023-11-26 11:48:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:41,681 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 11:48:41,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:41,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:41,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:41,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:41,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:41,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-26 11:48:41,858 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 11:48:41,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:41,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136122906] [2023-11-26 11:48:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136122906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:41,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332552557] [2023-11-26 11:48:41,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:41,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:41,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:41,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:41,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:41,862 INFO L87 Difference]: Start difference. First operand 1167 states and 1268 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 11:48:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:44,792 INFO L93 Difference]: Finished difference Result 1463 states and 1592 transitions. [2023-11-26 11:48:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-26 11:48:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:44,800 INFO L225 Difference]: With dead ends: 1463 [2023-11-26 11:48:44,800 INFO L226 Difference]: Without dead ends: 1463 [2023-11-26 11:48:44,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:44,802 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 895 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:44,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1370 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-26 11:48:44,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-26 11:48:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1120. [2023-11-26 11:48:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 529 states have (on average 2.223062381852552) internal successors, (1176), 1109 states have internal predecessors, (1176), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:48:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1220 transitions. [2023-11-26 11:48:44,845 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1220 transitions. Word has length 7 [2023-11-26 11:48:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:44,846 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1220 transitions. [2023-11-26 11:48:44,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 11:48:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1220 transitions. [2023-11-26 11:48:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:48:44,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:44,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:44,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:45,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:45,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:45,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1886782753, now seen corresponding path program 1 times [2023-11-26 11:48:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356836667] [2023-11-26 11:48:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:45,053 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 11:48:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:45,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:45,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:45,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:45,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:45,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-26 11:48:45,258 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 11:48:45,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:45,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356836667] [2023-11-26 11:48:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356836667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:45,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538885484] [2023-11-26 11:48:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:45,260 INFO L87 Difference]: Start difference. First operand 1120 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 11:48:49,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:49,453 INFO L93 Difference]: Finished difference Result 1546 states and 1681 transitions. [2023-11-26 11:48:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:49,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-26 11:48:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:49,464 INFO L225 Difference]: With dead ends: 1546 [2023-11-26 11:48:49,464 INFO L226 Difference]: Without dead ends: 1546 [2023-11-26 11:48:49,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:49,465 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 624 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:49,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1690 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-26 11:48:49,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2023-11-26 11:48:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1322. [2023-11-26 11:48:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 739 states have (on average 2.205683355886333) internal successors, (1630), 1309 states have internal predecessors, (1630), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-26 11:48:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1678 transitions. [2023-11-26 11:48:49,505 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1678 transitions. Word has length 7 [2023-11-26 11:48:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:49,505 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1678 transitions. [2023-11-26 11:48:49,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 11:48:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1678 transitions. [2023-11-26 11:48:49,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:48:49,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:49,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:49,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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)] Ended with exit code 0 [2023-11-26 11:48:49,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:49,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr533REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:49,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1379275429, now seen corresponding path program 1 times [2023-11-26 11:48:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:49,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684097140] [2023-11-26 11:48:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:49,712 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 11:48:49,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:49,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:49,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:49,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:49,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:49,949 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 11:48:49,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:49,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684097140] [2023-11-26 11:48:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684097140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:49,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570335250] [2023-11-26 11:48:49,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:49,952 INFO L87 Difference]: Start difference. First operand 1322 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:51,824 INFO L93 Difference]: Finished difference Result 2056 states and 2631 transitions. [2023-11-26 11:48:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:51,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-26 11:48:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:51,834 INFO L225 Difference]: With dead ends: 2056 [2023-11-26 11:48:51,834 INFO L226 Difference]: Without dead ends: 2056 [2023-11-26 11:48:51,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:51,836 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 683 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:51,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2082 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:48:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-11-26 11:48:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1657. [2023-11-26 11:48:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1072 states have (on average 2.183768656716418) internal successors, (2341), 1642 states have internal predecessors, (2341), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:48:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2393 transitions. [2023-11-26 11:48:51,886 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2393 transitions. Word has length 10 [2023-11-26 11:48:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:51,887 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2393 transitions. [2023-11-26 11:48:51,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:51,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2393 transitions. [2023-11-26 11:48:51,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:48:51,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:51,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:51,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:52,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr344REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:52,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1068672755, now seen corresponding path program 1 times [2023-11-26 11:48:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925282330] [2023-11-26 11:48:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:52,093 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 11:48:52,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:52,094 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:52,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:52,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:52,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:52,298 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 11:48:52,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:52,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:52,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925282330] [2023-11-26 11:48:52,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925282330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:52,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:52,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:52,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630487905] [2023-11-26 11:48:52,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:52,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:52,302 INFO L87 Difference]: Start difference. First operand 1657 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:48:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:53,563 INFO L93 Difference]: Finished difference Result 1573 states and 2233 transitions. [2023-11-26 11:48:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-11-26 11:48:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:53,579 INFO L225 Difference]: With dead ends: 1573 [2023-11-26 11:48:53,579 INFO L226 Difference]: Without dead ends: 1573 [2023-11-26 11:48:53,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:53,580 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 70 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:53,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1999 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:48:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-11-26 11:48:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2023-11-26 11:48:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1012 states have (on average 2.1551383399209487) internal successors, (2181), 1558 states have internal predecessors, (2181), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:48:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2233 transitions. [2023-11-26 11:48:53,630 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2233 transitions. Word has length 12 [2023-11-26 11:48:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:53,631 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2233 transitions. [2023-11-26 11:48:53,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:48:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2233 transitions. [2023-11-26 11:48:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:48:53,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:53,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:53,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:53,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:53,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr535REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:53,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash -34685049, now seen corresponding path program 1 times [2023-11-26 11:48:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640261629] [2023-11-26 11:48:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:53,837 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 11:48:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:53,839 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:53,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:48:54,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:54,102 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 11:48:54,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:54,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640261629] [2023-11-26 11:48:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640261629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937981302] [2023-11-26 11:48:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:54,106 INFO L87 Difference]: Start difference. First operand 1573 states and 2233 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 11:48:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:57,463 INFO L93 Difference]: Finished difference Result 1953 states and 2475 transitions. [2023-11-26 11:48:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:48:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-26 11:48:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:57,471 INFO L225 Difference]: With dead ends: 1953 [2023-11-26 11:48:57,471 INFO L226 Difference]: Without dead ends: 1953 [2023-11-26 11:48:57,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:57,472 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 660 mSDsluCounter, 2929 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:57,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 4084 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-26 11:48:57,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-11-26 11:48:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1575. [2023-11-26 11:48:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1014 states have (on average 2.1528599605522682) internal successors, (2183), 1560 states have internal predecessors, (2183), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:48:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2235 transitions. [2023-11-26 11:48:57,511 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2235 transitions. Word has length 13 [2023-11-26 11:48:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:57,512 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2235 transitions. [2023-11-26 11:48:57,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 11:48:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2235 transitions. [2023-11-26 11:48:57,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:48:57,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:57,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:57,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:57,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:57,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr638ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:48:57,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash -34678139, now seen corresponding path program 1 times [2023-11-26 11:48:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:48:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326094101] [2023-11-26 11:48:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:48:57,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:48:57,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:57,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:48:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:57,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:48:57,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:57,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:48:57,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:48:57,929 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:48:57,936 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 11:48:58,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:48:58,000 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 11:48:58,036 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 11:48:58,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:58,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:48:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326094101] [2023-11-26 11:48:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326094101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:58,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:58,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987542975] [2023-11-26 11:48:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:48:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:58,040 INFO L87 Difference]: Start difference. First operand 1575 states and 2235 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 11:49:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:00,288 INFO L93 Difference]: Finished difference Result 2786 states and 3850 transitions. [2023-11-26 11:49:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:49:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-26 11:49:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:00,308 INFO L225 Difference]: With dead ends: 2786 [2023-11-26 11:49:00,308 INFO L226 Difference]: Without dead ends: 2786 [2023-11-26 11:49:00,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:49:00,312 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1028 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:00,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 3067 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 11:49:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-11-26 11:49:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1574. [2023-11-26 11:49:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1013 states have (on average 2.153010858835143) internal successors, (2181), 1559 states have internal predecessors, (2181), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:49:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2233 transitions. [2023-11-26 11:49:00,364 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2233 transitions. Word has length 13 [2023-11-26 11:49:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2233 transitions. [2023-11-26 11:49:00,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 11:49:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2233 transitions. [2023-11-26 11:49:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:49:00,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:00,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:00,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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)] Ended with exit code 0 [2023-11-26 11:49:00,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:00,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:49:00,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1441026091, now seen corresponding path program 1 times [2023-11-26 11:49:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:49:00,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596694978] [2023-11-26 11:49:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:00,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:49:00,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:49:00,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:00,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:00,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:49:00,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:00,802 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 11:49:00,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:00,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:49:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596694978] [2023-11-26 11:49:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596694978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:00,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:00,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542699641] [2023-11-26 11:49:00,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:00,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:49:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:00,805 INFO L87 Difference]: Start difference. First operand 1574 states and 2233 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 11:49:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:01,889 INFO L93 Difference]: Finished difference Result 1520 states and 2153 transitions. [2023-11-26 11:49:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:01,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-11-26 11:49:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:01,899 INFO L225 Difference]: With dead ends: 1520 [2023-11-26 11:49:01,899 INFO L226 Difference]: Without dead ends: 1520 [2023-11-26 11:49:01,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:01,900 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 70 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:01,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1925 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:49:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2023-11-26 11:49:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1520. [2023-11-26 11:49:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 983 states have (on average 2.1373346897253307) internal successors, (2101), 1505 states have internal predecessors, (2101), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 11:49:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2153 transitions. [2023-11-26 11:49:01,935 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2153 transitions. Word has length 15 [2023-11-26 11:49:01,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:01,935 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 2153 transitions. [2023-11-26 11:49:01,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 11:49:01,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2153 transitions. [2023-11-26 11:49:01,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:49:01,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:01,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:01,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:02,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:02,140 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-26 11:49:02,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1846603601, now seen corresponding path program 1 times [2023-11-26 11:49:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:49:02,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487407930] [2023-11-26 11:49:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:02,142 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 11:49:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:49:02,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:02,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528f7d94-88b3-4dd6-a77b-eb6f9ad74cfb/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 11:49:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:02,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:02,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:02,397 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 11:49:02,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:02,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:49:02,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487407930] [2023-11-26 11:49:02,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487407930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:02,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:02,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382032657] [2023-11-26 11:49:02,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:02,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:49:02,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:02,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:02,401 INFO L87 Difference]: Start difference. First operand 1520 states and 2153 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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)