./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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_a8c04e53-8887-4c25-a984-391a5008041b/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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:23,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:23,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:03:23,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:23,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:23,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:23,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:23,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:23,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:23,849 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:23,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:23,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:23,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:23,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:23,853 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:23,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:23,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:23,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:23,855 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:23,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:23,856 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:03:23,857 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:03:23,857 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:03:23,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:23,858 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:03:23,859 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:03:23,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:23,860 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:23,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:23,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:23,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:23,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:23,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:23,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:23,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:23,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:03:23,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:03:23,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:23,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:23,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:23,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:23,866 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_a8c04e53-8887-4c25-a984-391a5008041b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2023-11-26 12:03:24,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:24,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:24,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:24,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:24,167 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:24,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2023-11-26 12:03:27,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:27,899 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:27,900 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2023-11-26 12:03:27,932 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/475fe32a5/b54242aa1820421cb6f5ac8933fe7c85/FLAGc71892e8c [2023-11-26 12:03:27,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/475fe32a5/b54242aa1820421cb6f5ac8933fe7c85 [2023-11-26 12:03:27,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:27,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:27,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:27,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:27,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:27,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:27" (1/1) ... [2023-11-26 12:03:27,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bec83cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:27, skipping insertion in model container [2023-11-26 12:03:27,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:27" (1/1) ... [2023-11-26 12:03:28,069 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:28,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:28,899 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-26 12:03:28,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51d84b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:28, skipping insertion in model container [2023-11-26 12:03:28,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:28,901 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:03:28,903 INFO L158 Benchmark]: Toolchain (without parser) took 944.82ms. Allocated memory is still 190.8MB. Free memory was 142.7MB in the beginning and 122.3MB in the end (delta: 20.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 12:03:28,904 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:03:28,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 941.60ms. Allocated memory is still 190.8MB. Free memory was 142.7MB in the beginning and 122.3MB in the end (delta: 20.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 12:03:28,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 941.60ms. Allocated memory is still 190.8MB. Free memory was 142.7MB in the beginning and 122.3MB in the end (delta: 20.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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_a8c04e53-8887-4c25-a984-391a5008041b/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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:03:31,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:03:31,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:03:31,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:03:31,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:03:31,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:03:31,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:03:31,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:03:31,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:03:31,797 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:03:31,798 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:03:31,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:03:31,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:03:31,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:03:31,802 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:03:31,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:03:31,803 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:03:31,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:03:31,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:03:31,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:03:31,805 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:03:31,805 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:03:31,806 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:03:31,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:03:31,807 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:03:31,807 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:03:31,808 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:03:31,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:03:31,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:03:31,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:03:31,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:03:31,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:03:31,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:03:31,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:03:31,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:31,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:03:31,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:03:31,814 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:03:31,814 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:03:31,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:03:31,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:03:31,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:03:31,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:03:31,816 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:03:31,816 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_a8c04e53-8887-4c25-a984-391a5008041b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2023-11-26 12:03:32,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:03:32,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:03:32,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:03:32,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:03:32,280 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:03:32,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2023-11-26 12:03:35,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:03:35,921 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:03:35,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2023-11-26 12:03:35,954 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/f612f23da/333d70b4da9b44e695991965d054eda8/FLAG2acf396af [2023-11-26 12:03:35,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/data/f612f23da/333d70b4da9b44e695991965d054eda8 [2023-11-26 12:03:35,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:03:35,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:03:35,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:35,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:03:35,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:03:35,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:35" (1/1) ... [2023-11-26 12:03:35,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b7be71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:35, skipping insertion in model container [2023-11-26 12:03:35,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:03:35" (1/1) ... [2023-11-26 12:03:36,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:36,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:36,759 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:03:36,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:03:36,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:36,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:03:37,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:03:37,124 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:03:37,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37 WrapperNode [2023-11-26 12:03:37,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:03:37,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:37,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:03:37,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:03:37,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,202 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,264 INFO L138 Inliner]: procedures = 180, calls = 340, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1135 [2023-11-26 12:03:37,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:03:37,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:03:37,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:03:37,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:03:37,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,421 INFO L175 MemorySlicer]: Split 319 memory accesses to 4 slices as follows [2, 5, 5, 307]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 84 writes are split as follows [0, 1, 1, 82]. [2023-11-26 12:03:37,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:03:37,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:03:37,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:03:37,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:03:37,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (1/1) ... [2023-11-26 12:03:37,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:03:37,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:37,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:03:37,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:03:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 12:03:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 12:03:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 12:03:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 12:03:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:03:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:03:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:03:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:03:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 12:03:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 12:03:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 12:03:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 12:03:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 12:03:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 12:03:37,642 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 12:03:37,643 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 12:03:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:03:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:03:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:03:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:03:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:03:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:03:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:03:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:03:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:03:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:03:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:03:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:03:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:03:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:03:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:03:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:03:37,908 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:03:37,910 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:03:37,915 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 12:03:37,984 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 12:03:38,006 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 12:03:38,028 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-26 12:03:44,571 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:03:44,954 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:03:44,955 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-26 12:03:44,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:44 BoogieIcfgContainer [2023-11-26 12:03:44,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:03:44,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:03:44,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:03:44,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:03:44,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:03:35" (1/3) ... [2023-11-26 12:03:44,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ead515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:44, skipping insertion in model container [2023-11-26 12:03:44,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:03:37" (2/3) ... [2023-11-26 12:03:44,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ead515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:03:44, skipping insertion in model container [2023-11-26 12:03:44,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:03:44" (3/3) ... [2023-11-26 12:03:44,971 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-1.i [2023-11-26 12:03:44,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:03:44,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2023-11-26 12:03:45,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:03:45,092 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;@42caeaa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:03:45,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2023-11-26 12:03:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 1137 states, 487 states have (on average 2.564681724845996) internal successors, (1249), 1129 states have internal predecessors, (1249), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:03:45,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:03:45,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:45,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:03:45,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr647ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:03:45,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1851143, now seen corresponding path program 1 times [2023-11-26 12:03:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304886363] [2023-11-26 12:03:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:45,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:45,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 12:03:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:45,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:03:45,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:45,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:45,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:45,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304886363] [2023-11-26 12:03:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304886363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:03:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027472177] [2023-11-26 12:03:45,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:45,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:45,493 INFO L87 Difference]: Start difference. First operand has 1137 states, 487 states have (on average 2.564681724845996) internal successors, (1249), 1129 states have internal predecessors, (1249), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:48,532 INFO L93 Difference]: Finished difference Result 1139 states and 1197 transitions. [2023-11-26 12:03:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-26 12:03:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:48,558 INFO L225 Difference]: With dead ends: 1139 [2023-11-26 12:03:48,558 INFO L226 Difference]: Without dead ends: 1136 [2023-11-26 12:03:48,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:03:48,564 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 24 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:48,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1575 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-26 12:03:48,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-11-26 12:03:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1127. [2023-11-26 12:03:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 488 states have (on average 2.4139344262295084) internal successors, (1178), 1119 states have internal predecessors, (1178), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:03:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1190 transitions. [2023-11-26 12:03:48,679 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1190 transitions. Word has length 3 [2023-11-26 12:03:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:48,680 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1190 transitions. [2023-11-26 12:03:48,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:48,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1190 transitions. [2023-11-26 12:03:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 12:03:48,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:48,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:03:48,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:48,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:03:48,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1777262702, now seen corresponding path program 1 times [2023-11-26 12:03:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114100679] [2023-11-26 12:03:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:48,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:48,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 12:03:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:49,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:03:49,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:49,119 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 12:03:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:49,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:49,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:49,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114100679] [2023-11-26 12:03:49,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114100679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:49,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:49,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:49,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153373138] [2023-11-26 12:03:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:49,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:49,134 INFO L87 Difference]: Start difference. First operand 1127 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:52,010 INFO L93 Difference]: Finished difference Result 1157 states and 1231 transitions. [2023-11-26 12:03:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-26 12:03:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:52,019 INFO L225 Difference]: With dead ends: 1157 [2023-11-26 12:03:52,019 INFO L226 Difference]: Without dead ends: 1157 [2023-11-26 12:03:52,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:03:52,021 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1029 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:52,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 533 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 12:03:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-11-26 12:03:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1100. [2023-11-26 12:03:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 554 states have (on average 2.1805054151624548) internal successors, (1208), 1092 states have internal predecessors, (1208), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:03:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1220 transitions. [2023-11-26 12:03:52,064 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1220 transitions. Word has length 5 [2023-11-26 12:03:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:52,064 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1220 transitions. [2023-11-26 12:03:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1220 transitions. [2023-11-26 12:03:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 12:03:52,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:52,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:03:52,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:52,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:52,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:03:52,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:52,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1777262703, now seen corresponding path program 1 times [2023-11-26 12:03:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:52,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003955304] [2023-11-26 12:03:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:52,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:52,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:52,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:52,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 12:03:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:52,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:52,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:52,449 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 12:03:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:52,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:52,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:52,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003955304] [2023-11-26 12:03:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003955304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:52,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:52,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105011350] [2023-11-26 12:03:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:03:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:03:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:03:52,477 INFO L87 Difference]: Start difference. First operand 1100 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:57,251 INFO L93 Difference]: Finished difference Result 1372 states and 1512 transitions. [2023-11-26 12:03:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:57,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-26 12:03:57,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:57,259 INFO L225 Difference]: With dead ends: 1372 [2023-11-26 12:03:57,259 INFO L226 Difference]: Without dead ends: 1372 [2023-11-26 12:03:57,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:03:57,261 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 456 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:57,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1123 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-26 12:03:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-11-26 12:03:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1223. [2023-11-26 12:03:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 687 states have (on average 2.155749636098981) internal successors, (1481), 1215 states have internal predecessors, (1481), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 12:03:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1493 transitions. [2023-11-26 12:03:57,303 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1493 transitions. Word has length 5 [2023-11-26 12:03:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:57,303 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1493 transitions. [2023-11-26 12:03:57,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1493 transitions. [2023-11-26 12:03:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 12:03:57,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:57,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:03:57,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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 12:03:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:57,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:03:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -737739788, now seen corresponding path program 1 times [2023-11-26 12:03:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:57,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362069210] [2023-11-26 12:03:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:57,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:03:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:57,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:03:57,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 12:03:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:57,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:03:57,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:57,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:57,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:57,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362069210] [2023-11-26 12:03:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362069210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:57,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896256889] [2023-11-26 12:03:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:57,702 INFO L87 Difference]: Start difference. First operand 1223 states and 1493 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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 12:04:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:00,525 INFO L93 Difference]: Finished difference Result 1979 states and 2434 transitions. [2023-11-26 12:04:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:00,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 12:04:00,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:00,536 INFO L225 Difference]: With dead ends: 1979 [2023-11-26 12:04:00,537 INFO L226 Difference]: Without dead ends: 1977 [2023-11-26 12:04:00,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:00,538 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 699 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:00,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2558 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-26 12:04:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-11-26 12:04:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1667. [2023-11-26 12:04:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1131 states have (on average 2.1343943412908932) internal successors, (2414), 1656 states have internal predecessors, (2414), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2432 transitions. [2023-11-26 12:04:00,591 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2432 transitions. Word has length 6 [2023-11-26 12:04:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:00,591 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2432 transitions. [2023-11-26 12:04:00,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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 12:04:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2432 transitions. [2023-11-26 12:04:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 12:04:00,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:00,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:00,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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)] Ended with exit code 0 [2023-11-26 12:04:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:00,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:00,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash 624379352, now seen corresponding path program 1 times [2023-11-26 12:04:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496154334] [2023-11-26 12:04:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:00,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:00,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 12:04:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:01,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:04:01,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:01,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:01,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496154334] [2023-11-26 12:04:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496154334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413561198] [2023-11-26 12:04:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:01,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:01,031 INFO L87 Difference]: Start difference. First operand 1667 states and 2432 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:02,168 INFO L93 Difference]: Finished difference Result 1613 states and 2352 transitions. [2023-11-26 12:04:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-26 12:04:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:02,179 INFO L225 Difference]: With dead ends: 1613 [2023-11-26 12:04:02,180 INFO L226 Difference]: Without dead ends: 1613 [2023-11-26 12:04:02,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 12:04:02,181 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 70 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:02,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1741 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 12:04:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2023-11-26 12:04:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1613. [2023-11-26 12:04:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1101 states have (on average 2.119891008174387) internal successors, (2334), 1602 states have internal predecessors, (2334), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2352 transitions. [2023-11-26 12:04:02,227 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2352 transitions. Word has length 11 [2023-11-26 12:04:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2352 transitions. [2023-11-26 12:04:02,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2352 transitions. [2023-11-26 12:04:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 12:04:02,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:02,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:02,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:02,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:02,432 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:02,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1266867310, now seen corresponding path program 1 times [2023-11-26 12:04:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434339209] [2023-11-26 12:04:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:02,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:02,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:02,435 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:02,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 12:04:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:02,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:02,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:02,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:02,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:02,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434339209] [2023-11-26 12:04:02,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434339209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:02,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868101616] [2023-11-26 12:04:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:02,649 INFO L87 Difference]: Start difference. First operand 1613 states and 2352 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 12:04:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:04,228 INFO L93 Difference]: Finished difference Result 1599 states and 2310 transitions. [2023-11-26 12:04:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:04,230 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 12:04:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:04,239 INFO L225 Difference]: With dead ends: 1599 [2023-11-26 12:04:04,239 INFO L226 Difference]: Without dead ends: 1599 [2023-11-26 12:04:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:04,241 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 58 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:04,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2568 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 12:04:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2023-11-26 12:04:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1597. [2023-11-26 12:04:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1099 states have (on average 2.083712465878071) internal successors, (2290), 1586 states have internal predecessors, (2290), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2308 transitions. [2023-11-26 12:04:04,290 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2308 transitions. Word has length 13 [2023-11-26 12:04:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2308 transitions. [2023-11-26 12:04:04,291 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 12:04:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2308 transitions. [2023-11-26 12:04:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 12:04:04,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:04,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:04,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:04,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:04,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:04,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1039830624, now seen corresponding path program 1 times [2023-11-26 12:04:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:04,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068355770] [2023-11-26 12:04:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:04,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:04,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:04,498 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:04,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-26 12:04:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:04,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:04:04,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:04,701 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 12:04:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:04,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:04,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068355770] [2023-11-26 12:04:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068355770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175560278] [2023-11-26 12:04:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:04,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:04,800 INFO L87 Difference]: Start difference. First operand 1597 states and 2308 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:08,066 INFO L93 Difference]: Finished difference Result 1650 states and 2311 transitions. [2023-11-26 12:04:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-26 12:04:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:08,077 INFO L225 Difference]: With dead ends: 1650 [2023-11-26 12:04:08,078 INFO L226 Difference]: Without dead ends: 1650 [2023-11-26 12:04:08,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:08,079 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 964 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:08,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 853 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-26 12:04:08,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2023-11-26 12:04:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1593. [2023-11-26 12:04:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1099 states have (on average 2.0764331210191083) internal successors, (2282), 1582 states have internal predecessors, (2282), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2300 transitions. [2023-11-26 12:04:08,118 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2300 transitions. Word has length 27 [2023-11-26 12:04:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:08,118 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2300 transitions. [2023-11-26 12:04:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2300 transitions. [2023-11-26 12:04:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 12:04:08,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:08,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:08,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:08,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:08,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1039830623, now seen corresponding path program 1 times [2023-11-26 12:04:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017269501] [2023-11-26 12:04:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:08,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:08,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:08,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:08,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-26 12:04:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:08,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 12:04:08,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:08,548 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 12:04:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:08,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:08,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017269501] [2023-11-26 12:04:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017269501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101196028] [2023-11-26 12:04:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:08,791 INFO L87 Difference]: Start difference. First operand 1593 states and 2300 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:13,725 INFO L93 Difference]: Finished difference Result 1739 states and 2312 transitions. [2023-11-26 12:04:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2023-11-26 12:04:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:13,733 INFO L225 Difference]: With dead ends: 1739 [2023-11-26 12:04:13,733 INFO L226 Difference]: Without dead ends: 1739 [2023-11-26 12:04:13,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:13,733 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 393 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:13,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1563 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-26 12:04:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2023-11-26 12:04:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1589. [2023-11-26 12:04:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1099 states have (on average 2.0691537761601455) internal successors, (2274), 1578 states have internal predecessors, (2274), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2292 transitions. [2023-11-26 12:04:13,771 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2292 transitions. Word has length 27 [2023-11-26 12:04:13,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:13,772 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2292 transitions. [2023-11-26 12:04:13,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2292 transitions. [2023-11-26 12:04:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 12:04:13,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:13,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:13,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:13,977 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2039883290, now seen corresponding path program 1 times [2023-11-26 12:04:13,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:13,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471559857] [2023-11-26 12:04:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:13,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:13,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:13,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 12:04:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:14,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:14,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:14,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:14,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:14,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471559857] [2023-11-26 12:04:14,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471559857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:14,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:14,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:14,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257874972] [2023-11-26 12:04:14,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:14,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:14,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:14,275 INFO L87 Difference]: Start difference. First operand 1589 states and 2292 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:15,738 INFO L93 Difference]: Finished difference Result 1577 states and 2272 transitions. [2023-11-26 12:04:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:15,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2023-11-26 12:04:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:15,747 INFO L225 Difference]: With dead ends: 1577 [2023-11-26 12:04:15,747 INFO L226 Difference]: Without dead ends: 1577 [2023-11-26 12:04:15,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:15,748 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 23 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2554 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:15,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2554 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 12:04:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-11-26 12:04:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1577. [2023-11-26 12:04:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1087 states have (on average 2.0735970561177552) internal successors, (2254), 1566 states have internal predecessors, (2254), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:04:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2272 transitions. [2023-11-26 12:04:15,784 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2272 transitions. Word has length 43 [2023-11-26 12:04:15,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:15,784 INFO L495 AbstractCegarLoop]: Abstraction has 1577 states and 2272 transitions. [2023-11-26 12:04:15,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:15,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2272 transitions. [2023-11-26 12:04:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 12:04:15,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:15,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:15,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/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 12:04:15,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:15,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2023-11-26 12:04:15,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2056350726, now seen corresponding path program 1 times [2023-11-26 12:04:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:15,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721750634] [2023-11-26 12:04:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:15,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 12:04:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8c04e53-8887-4c25-a984-391a5008041b/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 12:04:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:16,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:16,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:16,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:16,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:16,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721750634] [2023-11-26 12:04:16,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721750634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:16,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:16,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:16,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847981779] [2023-11-26 12:04:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:16,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:16,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:16,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:16,568 INFO L87 Difference]: Start difference. First operand 1577 states and 2272 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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)