./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:27,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:27,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:36:27,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:27,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:27,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:27,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:27,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:27,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:27,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:27,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:27,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:27,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:27,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:27,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:27,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:27,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:27,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:27,563 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:36:27,564 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:36:27,564 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:36:27,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:27,566 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:36:27,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:27,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:27,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:27,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:27,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:27,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:27,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:27,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:27,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:27,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:36:27,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:36:27,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:27,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:27,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:27,575 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:27,575 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_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2023-11-06 22:36:27,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:27,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:27,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:27,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:27,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:27,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2023-11-06 22:36:31,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:31,648 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:31,649 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2023-11-06 22:36:31,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/a909c47fb/ddfadb22910b40e997902e3305338be8/FLAGece198153 [2023-11-06 22:36:31,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/a909c47fb/ddfadb22910b40e997902e3305338be8 [2023-11-06 22:36:31,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:31,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:31,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:31,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:31,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:31,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:31" (1/1) ... [2023-11-06 22:36:31,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1c09f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:31, skipping insertion in model container [2023-11-06 22:36:31,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:31" (1/1) ... [2023-11-06 22:36:31,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:32,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:32,740 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) [2023-11-06 22:36:32,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11c0bd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:32, skipping insertion in model container [2023-11-06 22:36:32,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:32,742 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:36:32,744 INFO L158 Benchmark]: Toolchain (without parser) took 1024.47ms. Allocated memory is still 169.9MB. Free memory was 138.5MB in the beginning and 107.4MB in the end (delta: 31.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-06 22:36:32,744 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:36:32,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1019.90ms. Allocated memory is still 169.9MB. Free memory was 137.7MB in the beginning and 107.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 22:36:32,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1019.90ms. Allocated memory is still 169.9MB. Free memory was 137.7MB in the beginning and 107.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:35,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:35,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:36:35,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:35,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:35,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:35,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:35,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:35,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:35,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:35,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:35,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:35,857 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:35,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:35,860 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:35,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:35,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:35,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:35,862 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:36:35,864 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:36:35,864 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:36:35,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:35,865 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:36:35,866 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:36:35,866 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:36:35,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:35,867 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:35,868 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:35,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:35,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:35,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:35,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:35,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:35,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:35,873 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:36:35,873 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:36:35,874 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:35,874 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:35,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:35,876 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:36:35,876 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:35,876 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_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c098eb2ea0abe7b0f4b25f613d67df9ef36b2215e5396f258b75924d2167f9c8 [2023-11-06 22:36:36,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:36,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:36,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:36,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:36,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:36,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2023-11-06 22:36:40,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:40,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:40,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-3.i [2023-11-06 22:36:40,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/1eb576fc4/de0bcce329a5434d81d08719e91a18a4/FLAG5031094c8 [2023-11-06 22:36:40,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/data/1eb576fc4/de0bcce329a5434d81d08719e91a18a4 [2023-11-06 22:36:40,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:40,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:40,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:40,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:40,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:40,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:40" (1/1) ... [2023-11-06 22:36:40,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd559bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:40, skipping insertion in model container [2023-11-06 22:36:40,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:40" (1/1) ... [2023-11-06 22:36:40,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:41,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:41,946 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:36:42,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:42,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:42,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:36:42,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:42,435 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:36:42,443 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:36:42,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42 WrapperNode [2023-11-06 22:36:42,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:42,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:42,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:36:42,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:36:42,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,672 INFO L138 Inliner]: procedures = 180, calls = 624, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517 [2023-11-06 22:36:42,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:42,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:36:42,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:36:42,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:36:42,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:42,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:43,011 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:36:43,012 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:36:43,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:36:43,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:36:43,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (1/1) ... [2023-11-06 22:36:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:43,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:36:43,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:36:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 22:36:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-06 22:36:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-06 22:36:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:36:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:36:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:36:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:36:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:36:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:36:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:36:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:36:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:36:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:36:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:36:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:36:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:36:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:36:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:36:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:36:43,578 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:36:43,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:36:43,591 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 22:36:56,385 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:36:56,404 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:36:56,405 INFO L302 CfgBuilder]: Removed 168 assume(true) statements. [2023-11-06 22:36:56,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:56 BoogieIcfgContainer [2023-11-06 22:36:56,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:36:56,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:36:56,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:36:56,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:36:56,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:40" (1/3) ... [2023-11-06 22:36:56,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53812a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:56, skipping insertion in model container [2023-11-06 22:36:56,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:42" (2/3) ... [2023-11-06 22:36:56,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53812a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:56, skipping insertion in model container [2023-11-06 22:36:56,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:56" (3/3) ... [2023-11-06 22:36:56,419 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-3.i [2023-11-06 22:36:56,439 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:36:56,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2023-11-06 22:36:56,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:36:56,542 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;@16ba000c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:36:56,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2023-11-06 22:36:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:36:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:36:56,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:36:56,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:36:56,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:36:56,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-06 22:36:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:36:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687535050] [2023-11-06 22:36:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:56,582 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 [2023-11-06 22:36:56,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:36:56,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:36:56,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:36:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:56,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:36:56,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:56,974 INFO L351 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 [2023-11-06 22:36:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:57,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:57,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:36:57,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687535050] [2023-11-06 22:36:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687535050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:57,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:57,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:36:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625693856] [2023-11-06 22:36:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:36:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:57,058 INFO L87 Difference]: Start difference. First operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-06 22:37:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:03,671 INFO L93 Difference]: Finished difference Result 3314 states and 3513 transitions. [2023-11-06 22:37:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2023-11-06 22:37:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:03,711 INFO L225 Difference]: With dead ends: 3314 [2023-11-06 22:37:03,711 INFO L226 Difference]: Without dead ends: 3312 [2023-11-06 22:37:03,713 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 [2023-11-06 22:37:03,717 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2338 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:03,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2261 Invalid, 1684 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-06 22:37:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2023-11-06 22:37:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 2609. [2023-11-06 22:37:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1428 states have (on average 2.0434173669467786) internal successors, (2918), 2593 states have internal predecessors, (2918), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 22:37:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 2950 transitions. [2023-11-06 22:37:03,898 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 2950 transitions. Word has length 3 [2023-11-06 22:37:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:03,899 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 2950 transitions. [2023-11-06 22:37:03,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-06 22:37:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 2950 transitions. [2023-11-06 22:37:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 22:37:03,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:03,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 22:37:03,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-06 22:37:04,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:04,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:04,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:04,114 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-06 22:37:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880844083] [2023-11-06 22:37:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:04,116 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 [2023-11-06 22:37:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:04,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:04,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:04,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:37:04,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:04,387 INFO L351 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 [2023-11-06 22:37:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:04,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:04,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880844083] [2023-11-06 22:37:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880844083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:04,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:37:04,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248824464] [2023-11-06 22:37:04,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:04,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:04,410 INFO L87 Difference]: Start difference. First operand 2609 states and 2950 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-06 22:37:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:14,564 INFO L93 Difference]: Finished difference Result 3773 states and 4214 transitions. [2023-11-06 22:37:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:14,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2023-11-06 22:37:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:14,589 INFO L225 Difference]: With dead ends: 3773 [2023-11-06 22:37:14,589 INFO L226 Difference]: Without dead ends: 3773 [2023-11-06 22:37:14,590 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 [2023-11-06 22:37:14,591 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 1256 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:14,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 3471 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-11-06 22:37:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2023-11-06 22:37:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3070. [2023-11-06 22:37:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 1887 states have (on average 1.9994700582935878) internal successors, (3773), 3051 states have internal predecessors, (3773), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-06 22:37:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 3811 transitions. [2023-11-06 22:37:14,686 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 3811 transitions. Word has length 3 [2023-11-06 22:37:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:14,686 INFO L495 AbstractCegarLoop]: Abstraction has 3070 states and 3811 transitions. [2023-11-06 22:37:14,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2023-11-06 22:37:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 3811 transitions. [2023-11-06 22:37:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:37:14,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:14,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:14,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:14,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:14,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-06 22:37:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652322538] [2023-11-06 22:37:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:14,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:14,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:14,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:15,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:37:15,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:15,209 INFO L351 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 [2023-11-06 22:37:15,221 INFO L351 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 [2023-11-06 22:37:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:15,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:37:15,335 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:37:15,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:37:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:15,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:15,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652322538] [2023-11-06 22:37:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652322538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:15,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:37:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129102006] [2023-11-06 22:37:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:15,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:15,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:15,366 INFO L87 Difference]: Start difference. First operand 3070 states and 3811 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:31,562 INFO L93 Difference]: Finished difference Result 6081 states and 7008 transitions. [2023-11-06 22:37:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:37:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-06 22:37:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:31,595 INFO L225 Difference]: With dead ends: 6081 [2023-11-06 22:37:31,596 INFO L226 Difference]: Without dead ends: 6081 [2023-11-06 22:37:31,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:31,597 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 5296 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 3567 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5306 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:31,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5306 Valid, 2625 Invalid, 3609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 3567 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-11-06 22:37:31,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-11-06 22:37:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 3802. [2023-11-06 22:37:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3802 states, 2619 states have (on average 2.0278732340588013) internal successors, (5311), 3777 states have internal predecessors, (5311), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5361 transitions. [2023-11-06 22:37:31,732 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5361 transitions. Word has length 7 [2023-11-06 22:37:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:31,733 INFO L495 AbstractCegarLoop]: Abstraction has 3802 states and 5361 transitions. [2023-11-06 22:37:31,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:31,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5361 transitions. [2023-11-06 22:37:31,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:37:31,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:31,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:31,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:32,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:32,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:32,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2023-11-06 22:37:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:32,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246591693] [2023-11-06 22:37:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:32,004 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 [2023-11-06 22:37:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:32,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:32,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:32,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:37:32,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:32,279 INFO L351 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 [2023-11-06 22:37:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:32,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:32,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246591693] [2023-11-06 22:37:32,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246591693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:32,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:37:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692269073] [2023-11-06 22:37:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:32,301 INFO L87 Difference]: Start difference. First operand 3802 states and 5361 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:38,484 INFO L93 Difference]: Finished difference Result 5036 states and 6908 transitions. [2023-11-06 22:37:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:37:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:38,516 INFO L225 Difference]: With dead ends: 5036 [2023-11-06 22:37:38,517 INFO L226 Difference]: Without dead ends: 5036 [2023-11-06 22:37:38,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:38,518 INFO L413 NwaCegarLoop]: 2399 mSDtfsCounter, 2014 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:38,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 3269 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-06 22:37:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2023-11-06 22:37:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 3711. [2023-11-06 22:37:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3711 states, 2619 states have (on average 1.946544482626957) internal successors, (5098), 3686 states have internal predecessors, (5098), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5148 transitions. [2023-11-06 22:37:38,640 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5148 transitions. Word has length 8 [2023-11-06 22:37:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:38,641 INFO L495 AbstractCegarLoop]: Abstraction has 3711 states and 5148 transitions. [2023-11-06 22:37:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5148 transitions. [2023-11-06 22:37:38,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:37:38,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:38,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:38,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:38,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:38,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:38,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:38,857 INFO L85 PathProgramCache]: Analyzing trace with hash -305791725, now seen corresponding path program 1 times [2023-11-06 22:37:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:38,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737138341] [2023-11-06 22:37:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:38,858 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 [2023-11-06 22:37:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:38,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:38,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:39,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:37:39,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:39,215 INFO L351 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 [2023-11-06 22:37:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:39,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:39,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737138341] [2023-11-06 22:37:39,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737138341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:37:39,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762722154] [2023-11-06 22:37:39,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:39,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:39,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:39,265 INFO L87 Difference]: Start difference. First operand 3711 states and 5148 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:48,797 INFO L93 Difference]: Finished difference Result 5464 states and 7544 transitions. [2023-11-06 22:37:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:48,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:37:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:48,830 INFO L225 Difference]: With dead ends: 5464 [2023-11-06 22:37:48,830 INFO L226 Difference]: Without dead ends: 5464 [2023-11-06 22:37:48,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:48,831 INFO L413 NwaCegarLoop]: 2779 mSDtfsCounter, 1389 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 3984 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 3984 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-06 22:37:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2023-11-06 22:37:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4041. [2023-11-06 22:37:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 2959 states have (on average 1.9324095978371072) internal successors, (5718), 4016 states have internal predecessors, (5718), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5768 transitions. [2023-11-06 22:37:48,980 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5768 transitions. Word has length 8 [2023-11-06 22:37:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:48,981 INFO L495 AbstractCegarLoop]: Abstraction has 4041 states and 5768 transitions. [2023-11-06 22:37:48,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5768 transitions. [2023-11-06 22:37:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:37:48,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:48,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:48,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:49,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:49,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr658REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:49,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash -572019083, now seen corresponding path program 1 times [2023-11-06 22:37:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315050749] [2023-11-06 22:37:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:49,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:49,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:49,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:49,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:37:49,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:49,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:49,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315050749] [2023-11-06 22:37:49,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315050749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:49,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:37:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074376781] [2023-11-06 22:37:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:49,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:49,496 INFO L87 Difference]: Start difference. First operand 4041 states and 5768 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) [2023-11-06 22:37:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:49,579 INFO L93 Difference]: Finished difference Result 3981 states and 5682 transitions. [2023-11-06 22:37:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:49,580 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 [2023-11-06 22:37:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:49,613 INFO L225 Difference]: With dead ends: 3981 [2023-11-06 22:37:49,622 INFO L226 Difference]: Without dead ends: 3981 [2023-11-06 22:37:49,622 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 [2023-11-06 22:37:49,623 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 81 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4784 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:49,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4784 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:37:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3981 states. [2023-11-06 22:37:49,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3981 to 3981. [2023-11-06 22:37:49,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 2923 states have (on average 1.9267875470407116) internal successors, (5632), 3956 states have internal predecessors, (5632), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5682 transitions. [2023-11-06 22:37:49,738 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5682 transitions. Word has length 11 [2023-11-06 22:37:49,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:49,739 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5682 transitions. [2023-11-06 22:37:49,739 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) [2023-11-06 22:37:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5682 transitions. [2023-11-06 22:37:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:37:49,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:49,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:49,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:49,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:49,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr682REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:49,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 45529167, now seen corresponding path program 1 times [2023-11-06 22:37:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270190596] [2023-11-06 22:37:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:49,966 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 [2023-11-06 22:37:49,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:49,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:50,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:50,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:37:50,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:50,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:50,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:50,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270190596] [2023-11-06 22:37:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270190596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:50,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:37:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794149831] [2023-11-06 22:37:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:50,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:50,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:50,306 INFO L87 Difference]: Start difference. First operand 3981 states and 5682 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) [2023-11-06 22:37:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:50,455 INFO L93 Difference]: Finished difference Result 3953 states and 5626 transitions. [2023-11-06 22:37:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:37:50,456 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 [2023-11-06 22:37:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:50,470 INFO L225 Difference]: With dead ends: 3953 [2023-11-06 22:37:50,470 INFO L226 Difference]: Without dead ends: 3953 [2023-11-06 22:37:50,471 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 [2023-11-06 22:37:50,472 INFO L413 NwaCegarLoop]: 2383 mSDtfsCounter, 62 mSDsluCounter, 4732 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7115 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:50,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 7115 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:37:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2023-11-06 22:37:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3951. [2023-11-06 22:37:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 2907 states have (on average 1.9174406604747163) internal successors, (5574), 3926 states have internal predecessors, (5574), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5624 transitions. [2023-11-06 22:37:50,623 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5624 transitions. Word has length 13 [2023-11-06 22:37:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:50,625 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 5624 transitions. [2023-11-06 22:37:50,628 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) [2023-11-06 22:37:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5624 transitions. [2023-11-06 22:37:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:37:50,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:50,631 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] [2023-11-06 22:37:50,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:50,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:50,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:50,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 650290655, now seen corresponding path program 1 times [2023-11-06 22:37:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758496305] [2023-11-06 22:37:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:50,847 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 [2023-11-06 22:37:50,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:50,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:50,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:51,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:37:51,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:51,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:51,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758496305] [2023-11-06 22:37:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758496305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:51,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:51,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:37:51,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600521425] [2023-11-06 22:37:51,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:51,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:51,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:51,317 INFO L87 Difference]: Start difference. First operand 3951 states and 5624 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:37:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:51,397 INFO L93 Difference]: Finished difference Result 3819 states and 5366 transitions. [2023-11-06 22:37:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-06 22:37:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:51,412 INFO L225 Difference]: With dead ends: 3819 [2023-11-06 22:37:51,412 INFO L226 Difference]: Without dead ends: 3819 [2023-11-06 22:37:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:51,414 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 81 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4628 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:51,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4628 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:37:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2023-11-06 22:37:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 3819. [2023-11-06 22:37:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 2799 states have (on average 1.8992497320471597) internal successors, (5316), 3794 states have internal predecessors, (5316), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5366 transitions. [2023-11-06 22:37:51,506 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5366 transitions. Word has length 20 [2023-11-06 22:37:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:51,507 INFO L495 AbstractCegarLoop]: Abstraction has 3819 states and 5366 transitions. [2023-11-06 22:37:51,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:37:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5366 transitions. [2023-11-06 22:37:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:37:51,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:51,509 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] [2023-11-06 22:37:51,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:51,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:51,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:51,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 445820063, now seen corresponding path program 1 times [2023-11-06 22:37:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554700713] [2023-11-06 22:37:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:51,739 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 [2023-11-06 22:37:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:51,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:51,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:52,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:37:52,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:52,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:52,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554700713] [2023-11-06 22:37:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554700713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:52,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:37:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253082729] [2023-11-06 22:37:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:52,166 INFO L87 Difference]: Start difference. First operand 3819 states and 5366 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:37:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:52,277 INFO L93 Difference]: Finished difference Result 3759 states and 5280 transitions. [2023-11-06 22:37:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-06 22:37:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:52,289 INFO L225 Difference]: With dead ends: 3759 [2023-11-06 22:37:52,289 INFO L226 Difference]: Without dead ends: 3759 [2023-11-06 22:37:52,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:52,293 INFO L413 NwaCegarLoop]: 2307 mSDtfsCounter, 81 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:52,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 4542 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:37:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2023-11-06 22:37:52,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2023-11-06 22:37:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 2763 states have (on average 1.8928700687658342) internal successors, (5230), 3734 states have internal predecessors, (5230), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5280 transitions. [2023-11-06 22:37:52,383 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5280 transitions. Word has length 20 [2023-11-06 22:37:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:52,384 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5280 transitions. [2023-11-06 22:37:52,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-06 22:37:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5280 transitions. [2023-11-06 22:37:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:37:52,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:52,388 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] [2023-11-06 22:37:52,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:52,616 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr358REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:52,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2135880199, now seen corresponding path program 1 times [2023-11-06 22:37:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769039432] [2023-11-06 22:37:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:52,618 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 [2023-11-06 22:37:52,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:52,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:52,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:37:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:53,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:37:53,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:53,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:53,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769039432] [2023-11-06 22:37:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769039432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:53,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:53,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:37:53,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172583266] [2023-11-06 22:37:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:53,053 INFO L87 Difference]: Start difference. First operand 3759 states and 5280 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:37:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:53,209 INFO L93 Difference]: Finished difference Result 3703 states and 5112 transitions. [2023-11-06 22:37:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:37:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2023-11-06 22:37:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:53,221 INFO L225 Difference]: With dead ends: 3703 [2023-11-06 22:37:53,221 INFO L226 Difference]: Without dead ends: 3703 [2023-11-06 22:37:53,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:37:53,223 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 62 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 6752 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:53,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 6752 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:37:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-11-06 22:37:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3697. [2023-11-06 22:37:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 2715 states have (on average 1.8622467771639042) internal successors, (5056), 3672 states have internal predecessors, (5056), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5106 transitions. [2023-11-06 22:37:53,353 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5106 transitions. Word has length 22 [2023-11-06 22:37:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:53,353 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5106 transitions. [2023-11-06 22:37:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:37:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5106 transitions. [2023-11-06 22:37:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 22:37:53,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:53,360 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] [2023-11-06 22:37:53,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:53,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:53,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:53,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1063651591, now seen corresponding path program 1 times [2023-11-06 22:37:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:53,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488887350] [2023-11-06 22:37:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:53,583 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 [2023-11-06 22:37:53,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:53,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:53,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:37:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:53,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:37:53,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:53,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:53,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:53,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488887350] [2023-11-06 22:37:53,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488887350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:53,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:53,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:37:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135610004] [2023-11-06 22:37:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:53,947 INFO L87 Difference]: Start difference. First operand 3697 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:37:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:37:54,054 INFO L93 Difference]: Finished difference Result 3669 states and 5050 transitions. [2023-11-06 22:37:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:37:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2023-11-06 22:37:54,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:37:54,065 INFO L225 Difference]: With dead ends: 3669 [2023-11-06 22:37:54,065 INFO L226 Difference]: Without dead ends: 3669 [2023-11-06 22:37:54,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:37:54,066 INFO L413 NwaCegarLoop]: 2227 mSDtfsCounter, 62 mSDsluCounter, 4420 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 6647 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:37:54,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 6647 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:37:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2023-11-06 22:37:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3667. [2023-11-06 22:37:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2699 states have (on average 1.8517969618377177) internal successors, (4998), 3642 states have internal predecessors, (4998), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:37:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5048 transitions. [2023-11-06 22:37:54,154 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5048 transitions. Word has length 22 [2023-11-06 22:37:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:37:54,154 INFO L495 AbstractCegarLoop]: Abstraction has 3667 states and 5048 transitions. [2023-11-06 22:37:54,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-06 22:37:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5048 transitions. [2023-11-06 22:37:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:37:54,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:37:54,156 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] [2023-11-06 22:37:54,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:54,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:37:54,372 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr696REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:37:54,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash -209167555, now seen corresponding path program 1 times [2023-11-06 22:37:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193159971] [2023-11-06 22:37:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:54,373 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 [2023-11-06 22:37:54,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:54,374 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:37:54,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:37:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:54,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:37:54,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:54,657 INFO L351 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 [2023-11-06 22:37:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:54,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:54,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:54,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193159971] [2023-11-06 22:37:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193159971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:54,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:37:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420097717] [2023-11-06 22:37:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:54,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:54,771 INFO L87 Difference]: Start difference. First operand 3667 states and 5048 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) [2023-11-06 22:38:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:02,040 INFO L93 Difference]: Finished difference Result 4291 states and 5586 transitions. [2023-11-06 22:38:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:02,041 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 [2023-11-06 22:38:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:02,052 INFO L225 Difference]: With dead ends: 4291 [2023-11-06 22:38:02,052 INFO L226 Difference]: Without dead ends: 4291 [2023-11-06 22:38:02,052 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 [2023-11-06 22:38:02,054 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 2032 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:02,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 3371 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-06 22:38:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2023-11-06 22:38:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3663. [2023-11-06 22:38:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3663 states, 2699 states have (on average 1.848832901074472) internal successors, (4990), 3638 states have internal predecessors, (4990), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 5040 transitions. [2023-11-06 22:38:02,146 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 5040 transitions. Word has length 27 [2023-11-06 22:38:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:02,146 INFO L495 AbstractCegarLoop]: Abstraction has 3663 states and 5040 transitions. [2023-11-06 22:38:02,147 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) [2023-11-06 22:38:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 5040 transitions. [2023-11-06 22:38:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:38:02,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:02,149 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] [2023-11-06 22:38:02,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:02,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:02,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr697REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:02,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -209167554, now seen corresponding path program 1 times [2023-11-06 22:38:02,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:02,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721132843] [2023-11-06 22:38:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:02,365 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 [2023-11-06 22:38:02,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:02,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:02,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:38:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:02,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:38:02,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:02,717 INFO L351 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 [2023-11-06 22:38:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:02,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:02,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721132843] [2023-11-06 22:38:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721132843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:02,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:02,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:02,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497766362] [2023-11-06 22:38:02,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:02,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:02,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:02,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:02,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:02,969 INFO L87 Difference]: Start difference. First operand 3663 states and 5040 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) [2023-11-06 22:38:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:13,915 INFO L93 Difference]: Finished difference Result 4756 states and 6225 transitions. [2023-11-06 22:38:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:13,916 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 [2023-11-06 22:38:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:13,930 INFO L225 Difference]: With dead ends: 4756 [2023-11-06 22:38:13,931 INFO L226 Difference]: Without dead ends: 4756 [2023-11-06 22:38:13,931 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 [2023-11-06 22:38:13,932 INFO L413 NwaCegarLoop]: 1765 mSDtfsCounter, 1185 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:13,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 4149 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-06 22:38:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2023-11-06 22:38:13,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 3699. [2023-11-06 22:38:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 2735 states have (on average 1.8394881170018282) internal successors, (5031), 3674 states have internal predecessors, (5031), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 5081 transitions. [2023-11-06 22:38:14,006 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 5081 transitions. Word has length 27 [2023-11-06 22:38:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:14,006 INFO L495 AbstractCegarLoop]: Abstraction has 3699 states and 5081 transitions. [2023-11-06 22:38:14,006 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) [2023-11-06 22:38:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 5081 transitions. [2023-11-06 22:38:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:38:14,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:14,010 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] [2023-11-06 22:38:14,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-06 22:38:14,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:14,224 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr372REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:14,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash 988185767, now seen corresponding path program 1 times [2023-11-06 22:38:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784246966] [2023-11-06 22:38:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:14,225 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 [2023-11-06 22:38:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:14,228 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:14,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:38:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:14,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:14,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:14,734 INFO L351 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 [2023-11-06 22:38:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:14,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:14,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784246966] [2023-11-06 22:38:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784246966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:14,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:14,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41783810] [2023-11-06 22:38:14,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:14,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:14,858 INFO L87 Difference]: Start difference. First operand 3699 states and 5081 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:21,812 INFO L93 Difference]: Finished difference Result 4901 states and 6683 transitions. [2023-11-06 22:38:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:38:21,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2023-11-06 22:38:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:21,825 INFO L225 Difference]: With dead ends: 4901 [2023-11-06 22:38:21,825 INFO L226 Difference]: Without dead ends: 4901 [2023-11-06 22:38:21,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:21,826 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 1799 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:21,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 4654 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-06 22:38:21,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2023-11-06 22:38:21,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3696. [2023-11-06 22:38:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2735 states have (on average 1.8314442413162706) internal successors, (5009), 3671 states have internal predecessors, (5009), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5059 transitions. [2023-11-06 22:38:21,905 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5059 transitions. Word has length 36 [2023-11-06 22:38:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:21,906 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 5059 transitions. [2023-11-06 22:38:21,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5059 transitions. [2023-11-06 22:38:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:38:21,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:21,908 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] [2023-11-06 22:38:21,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:22,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:22,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr373REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:22,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 988185768, now seen corresponding path program 1 times [2023-11-06 22:38:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133097059] [2023-11-06 22:38:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:22,123 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 [2023-11-06 22:38:22,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:22,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:38:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:22,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:38:22,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:22,461 INFO L351 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 [2023-11-06 22:38:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:22,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:22,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133097059] [2023-11-06 22:38:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133097059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:22,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124177062] [2023-11-06 22:38:22,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:22,692 INFO L87 Difference]: Start difference. First operand 3696 states and 5059 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:32,970 INFO L93 Difference]: Finished difference Result 4979 states and 6675 transitions. [2023-11-06 22:38:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:32,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2023-11-06 22:38:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:32,983 INFO L225 Difference]: With dead ends: 4979 [2023-11-06 22:38:32,983 INFO L226 Difference]: Without dead ends: 4979 [2023-11-06 22:38:32,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:32,992 INFO L413 NwaCegarLoop]: 2570 mSDtfsCounter, 1154 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 5369 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:32,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 5369 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-06 22:38:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2023-11-06 22:38:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3696. [2023-11-06 22:38:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2735 states have (on average 1.8285191956124314) internal successors, (5001), 3671 states have internal predecessors, (5001), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5051 transitions. [2023-11-06 22:38:33,064 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5051 transitions. Word has length 36 [2023-11-06 22:38:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:33,066 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 5051 transitions. [2023-11-06 22:38:33,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5051 transitions. [2023-11-06 22:38:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:38:33,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:33,067 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] [2023-11-06 22:38:33,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:33,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:33,282 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:33,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128551, now seen corresponding path program 1 times [2023-11-06 22:38:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:33,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815261603] [2023-11-06 22:38:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:33,284 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 [2023-11-06 22:38:33,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:33,285 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:33,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:38:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:33,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:33,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:33,629 INFO L351 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 [2023-11-06 22:38:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:33,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:33,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815261603] [2023-11-06 22:38:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815261603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132901141] [2023-11-06 22:38:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:33,740 INFO L87 Difference]: Start difference. First operand 3696 states and 5051 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:40,367 INFO L93 Difference]: Finished difference Result 4881 states and 6651 transitions. [2023-11-06 22:38:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:40,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2023-11-06 22:38:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:40,376 INFO L225 Difference]: With dead ends: 4881 [2023-11-06 22:38:40,376 INFO L226 Difference]: Without dead ends: 4881 [2023-11-06 22:38:40,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:40,377 INFO L413 NwaCegarLoop]: 2191 mSDtfsCounter, 1773 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 2721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:40,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 4620 Invalid, 2721 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-06 22:38:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2023-11-06 22:38:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 3692. [2023-11-06 22:38:40,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2735 states have (on average 1.8255941499085924) internal successors, (4993), 3667 states have internal predecessors, (4993), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 5043 transitions. [2023-11-06 22:38:40,443 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 5043 transitions. Word has length 36 [2023-11-06 22:38:40,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:40,443 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 5043 transitions. [2023-11-06 22:38:40,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 5043 transitions. [2023-11-06 22:38:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:38:40,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:40,444 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] [2023-11-06 22:38:40,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:40,659 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:40,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1781128552, now seen corresponding path program 1 times [2023-11-06 22:38:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393941361] [2023-11-06 22:38:40,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:40,660 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 [2023-11-06 22:38:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:40,662 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:40,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:38:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:40,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:38:40,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:41,011 INFO L351 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 [2023-11-06 22:38:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:41,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:41,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393941361] [2023-11-06 22:38:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393941361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125416436] [2023-11-06 22:38:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:41,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:41,263 INFO L87 Difference]: Start difference. First operand 3692 states and 5043 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:51,142 INFO L93 Difference]: Finished difference Result 4971 states and 6659 transitions. [2023-11-06 22:38:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:51,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2023-11-06 22:38:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:51,150 INFO L225 Difference]: With dead ends: 4971 [2023-11-06 22:38:51,150 INFO L226 Difference]: Without dead ends: 4971 [2023-11-06 22:38:51,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:51,151 INFO L413 NwaCegarLoop]: 2563 mSDtfsCounter, 1146 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 5325 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:51,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 5325 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-11-06 22:38:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2023-11-06 22:38:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 3688. [2023-11-06 22:38:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 2735 states have (on average 1.8226691042047531) internal successors, (4985), 3663 states have internal predecessors, (4985), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5035 transitions. [2023-11-06 22:38:51,218 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5035 transitions. Word has length 36 [2023-11-06 22:38:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:51,219 INFO L495 AbstractCegarLoop]: Abstraction has 3688 states and 5035 transitions. [2023-11-06 22:38:51,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2023-11-06 22:38:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5035 transitions. [2023-11-06 22:38:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:38:51,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:51,220 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] [2023-11-06 22:38:51,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:51,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:51,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:51,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash -599566665, now seen corresponding path program 1 times [2023-11-06 22:38:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:51,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620908261] [2023-11-06 22:38:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:51,436 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 [2023-11-06 22:38:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:51,437 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:51,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:38:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:51,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:51,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:51,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:51,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620908261] [2023-11-06 22:38:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620908261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:38:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622028461] [2023-11-06 22:38:51,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:51,821 INFO L87 Difference]: Start difference. First operand 3688 states and 5035 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-11-06 22:38:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:51,914 INFO L93 Difference]: Finished difference Result 3676 states and 5011 transitions. [2023-11-06 22:38:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2023-11-06 22:38:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:51,919 INFO L225 Difference]: With dead ends: 3676 [2023-11-06 22:38:51,920 INFO L226 Difference]: Without dead ends: 3676 [2023-11-06 22:38:51,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:51,920 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 39 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:51,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6596 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:38:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2023-11-06 22:38:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2023-11-06 22:38:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2723 states have (on average 1.8218876239441792) internal successors, (4961), 3651 states have internal predecessors, (4961), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-06 22:38:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5011 transitions. [2023-11-06 22:38:51,970 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5011 transitions. Word has length 41 [2023-11-06 22:38:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:51,971 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5011 transitions. [2023-11-06 22:38:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-11-06 22:38:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5011 transitions. [2023-11-06 22:38:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 22:38:51,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:51,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:51,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-06 22:38:52,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:52,186 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr704REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:52,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1578829059, now seen corresponding path program 1 times [2023-11-06 22:38:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:52,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259746824] [2023-11-06 22:38:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:52,187 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 [2023-11-06 22:38:52,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:52,189 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:52,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:38:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:52,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:52,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:52,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:52,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:52,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259746824] [2023-11-06 22:38:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259746824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:52,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:52,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473306501] [2023-11-06 22:38:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:52,855 INFO L87 Difference]: Start difference. First operand 3676 states and 5011 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-06 22:38:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:53,330 INFO L93 Difference]: Finished difference Result 5526 states and 7249 transitions. [2023-11-06 22:38:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-11-06 22:38:53,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:53,336 INFO L225 Difference]: With dead ends: 5526 [2023-11-06 22:38:53,336 INFO L226 Difference]: Without dead ends: 5526 [2023-11-06 22:38:53,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:53,337 INFO L413 NwaCegarLoop]: 2298 mSDtfsCounter, 1584 mSDsluCounter, 2060 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:53,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 4358 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:38:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2023-11-06 22:38:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 4719. [2023-11-06 22:38:53,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 3759 states have (on average 1.8050013301409948) internal successors, (6785), 4684 states have internal predecessors, (6785), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:38:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6855 transitions. [2023-11-06 22:38:53,410 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6855 transitions. Word has length 49 [2023-11-06 22:38:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:53,410 INFO L495 AbstractCegarLoop]: Abstraction has 4719 states and 6855 transitions. [2023-11-06 22:38:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-06 22:38:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6855 transitions. [2023-11-06 22:38:53,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 22:38:53,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:53,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:53,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:53,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:53,625 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:53,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash -435753951, now seen corresponding path program 1 times [2023-11-06 22:38:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459268519] [2023-11-06 22:38:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:53,627 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 [2023-11-06 22:38:53,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:53,628 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:53,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:38:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:54,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:54,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:54,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459268519] [2023-11-06 22:38:54,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459268519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:54,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:54,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:38:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717525942] [2023-11-06 22:38:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:54,096 INFO L87 Difference]: Start difference. First operand 4719 states and 6855 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-11-06 22:38:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:54,210 INFO L93 Difference]: Finished difference Result 4677 states and 6785 transitions. [2023-11-06 22:38:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2023-11-06 22:38:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:54,219 INFO L225 Difference]: With dead ends: 4677 [2023-11-06 22:38:54,219 INFO L226 Difference]: Without dead ends: 4677 [2023-11-06 22:38:54,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:54,222 INFO L413 NwaCegarLoop]: 2210 mSDtfsCounter, 41 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:54,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6582 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:38:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2023-11-06 22:38:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4677. [2023-11-06 22:38:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4677 states, 3717 states have (on average 1.8065644336830777) internal successors, (6715), 4642 states have internal predecessors, (6715), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:38:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6785 transitions. [2023-11-06 22:38:54,351 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6785 transitions. Word has length 52 [2023-11-06 22:38:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:54,351 INFO L495 AbstractCegarLoop]: Abstraction has 4677 states and 6785 transitions. [2023-11-06 22:38:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-11-06 22:38:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6785 transitions. [2023-11-06 22:38:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:38:54,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:54,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:54,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:54,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:54,567 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:54,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1883919192, now seen corresponding path program 1 times [2023-11-06 22:38:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:54,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386070795] [2023-11-06 22:38:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:54,569 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 [2023-11-06 22:38:54,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:54,570 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:54,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:38:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:55,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:55,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:55,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:55,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386070795] [2023-11-06 22:38:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386070795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:38:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815745762] [2023-11-06 22:38:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:55,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:55,110 INFO L87 Difference]: Start difference. First operand 4677 states and 6785 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-06 22:38:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:55,223 INFO L93 Difference]: Finished difference Result 4659 states and 6755 transitions. [2023-11-06 22:38:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:55,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2023-11-06 22:38:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:55,232 INFO L225 Difference]: With dead ends: 4659 [2023-11-06 22:38:55,232 INFO L226 Difference]: Without dead ends: 4659 [2023-11-06 22:38:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:55,234 INFO L413 NwaCegarLoop]: 2206 mSDtfsCounter, 31 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 6580 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:55,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 6580 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:38:55,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2023-11-06 22:38:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4659. [2023-11-06 22:38:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3699 states have (on average 1.8072452014057854) internal successors, (6685), 4624 states have internal predecessors, (6685), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:38:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 6755 transitions. [2023-11-06 22:38:55,324 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 6755 transitions. Word has length 55 [2023-11-06 22:38:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:55,325 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 6755 transitions. [2023-11-06 22:38:55,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2023-11-06 22:38:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 6755 transitions. [2023-11-06 22:38:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:38:55,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:55,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:55,542 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:55,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:55,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2044700370, now seen corresponding path program 1 times [2023-11-06 22:38:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52591973] [2023-11-06 22:38:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:55,544 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 [2023-11-06 22:38:55,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:55,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:55,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:38:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:55,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:55,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:55,962 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:38:55,962 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:38:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:38:55,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-06 22:38:56,037 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:38:56,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-06 22:38:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:56,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:56,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52591973] [2023-11-06 22:38:56,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52591973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:56,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:56,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:38:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224879952] [2023-11-06 22:38:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:56,064 INFO L87 Difference]: Start difference. First operand 4659 states and 6755 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:58,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:58,571 INFO L93 Difference]: Finished difference Result 4628 states and 6723 transitions. [2023-11-06 22:38:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-06 22:38:58,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:38:58,579 INFO L225 Difference]: With dead ends: 4628 [2023-11-06 22:38:58,579 INFO L226 Difference]: Without dead ends: 4628 [2023-11-06 22:38:58,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:58,580 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 4 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:38:58,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6353 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:38:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2023-11-06 22:38:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4625. [2023-11-06 22:38:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 3665 states have (on average 1.8144611186903137) internal successors, (6650), 4590 states have internal predecessors, (6650), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-06 22:38:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 6720 transitions. [2023-11-06 22:38:58,669 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 6720 transitions. Word has length 60 [2023-11-06 22:38:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:38:58,669 INFO L495 AbstractCegarLoop]: Abstraction has 4625 states and 6720 transitions. [2023-11-06 22:38:58,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 6720 transitions. [2023-11-06 22:38:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:38:58,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:38:58,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:58,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:38:58,885 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr437REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:38:58,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1289637997, now seen corresponding path program 1 times [2023-11-06 22:38:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:58,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668484445] [2023-11-06 22:38:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:58,887 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 [2023-11-06 22:38:58,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:58,889 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:38:58,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:38:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:59,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:59,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:59,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:59,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:59,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668484445] [2023-11-06 22:38:59,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668484445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:59,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:59,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:59,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203576982] [2023-11-06 22:38:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:59,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:59,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:59,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:59,692 INFO L87 Difference]: Start difference. First operand 4625 states and 6720 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-06 22:38:59,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:38:59,960 INFO L93 Difference]: Finished difference Result 6462 states and 9030 transitions. [2023-11-06 22:38:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:59,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-11-06 22:38:59,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:00,047 INFO L225 Difference]: With dead ends: 6462 [2023-11-06 22:39:00,047 INFO L226 Difference]: Without dead ends: 6462 [2023-11-06 22:39:00,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:00,048 INFO L413 NwaCegarLoop]: 2496 mSDtfsCounter, 1277 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:00,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 4586 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:39:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2023-11-06 22:39:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5725. [2023-11-06 22:39:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5725 states, 4757 states have (on average 1.7893630439352533) internal successors, (8512), 5679 states have internal predecessors, (8512), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5725 states to 5725 states and 8604 transitions. [2023-11-06 22:39:00,132 INFO L78 Accepts]: Start accepts. Automaton has 5725 states and 8604 transitions. Word has length 60 [2023-11-06 22:39:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:00,133 INFO L495 AbstractCegarLoop]: Abstraction has 5725 states and 8604 transitions. [2023-11-06 22:39:00,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-06 22:39:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5725 states and 8604 transitions. [2023-11-06 22:39:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 22:39:00,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:00,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:00,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:00,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:00,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr391REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:00,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1016546634, now seen corresponding path program 1 times [2023-11-06 22:39:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765413692] [2023-11-06 22:39:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:00,360 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 [2023-11-06 22:39:00,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:00,362 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:00,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:39:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:00,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:39:00,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:00,956 INFO L351 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 [2023-11-06 22:39:00,963 INFO L351 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 [2023-11-06 22:39:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:01,781 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:39:01,796 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:39:01,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:39:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:01,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:01,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765413692] [2023-11-06 22:39:01,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765413692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:01,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:39:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434778620] [2023-11-06 22:39:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:01,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:01,819 INFO L87 Difference]: Start difference. First operand 5725 states and 8604 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-06 22:39:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:10,050 INFO L93 Difference]: Finished difference Result 8211 states and 12394 transitions. [2023-11-06 22:39:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2023-11-06 22:39:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:10,062 INFO L225 Difference]: With dead ends: 8211 [2023-11-06 22:39:10,062 INFO L226 Difference]: Without dead ends: 8211 [2023-11-06 22:39:10,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:10,063 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 2457 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:10,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2471 Valid, 1812 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-06 22:39:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2023-11-06 22:39:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 5483. [2023-11-06 22:39:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 4599 states have (on average 1.7240704500978474) internal successors, (7929), 5437 states have internal predecessors, (7929), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 8021 transitions. [2023-11-06 22:39:10,142 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 8021 transitions. Word has length 63 [2023-11-06 22:39:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:10,143 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 8021 transitions. [2023-11-06 22:39:10,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-11-06 22:39:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 8021 transitions. [2023-11-06 22:39:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:39:10,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:10,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:10,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:10,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:10,360 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr396REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:10,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2012708672, now seen corresponding path program 1 times [2023-11-06 22:39:10,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707243141] [2023-11-06 22:39:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:10,362 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 [2023-11-06 22:39:10,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:10,363 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:39:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:10,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:10,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:10,822 INFO L351 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 [2023-11-06 22:39:10,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:10,888 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:39:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:10,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:10,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:10,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707243141] [2023-11-06 22:39:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707243141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028057017] [2023-11-06 22:39:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:10,905 INFO L87 Difference]: Start difference. First operand 5483 states and 8021 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:17,579 INFO L93 Difference]: Finished difference Result 5482 states and 8017 transitions. [2023-11-06 22:39:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:17,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-06 22:39:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:17,586 INFO L225 Difference]: With dead ends: 5482 [2023-11-06 22:39:17,586 INFO L226 Difference]: Without dead ends: 5482 [2023-11-06 22:39:17,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:17,587 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 4 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:17,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5654 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-06 22:39:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-06 22:39:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5482. [2023-11-06 22:39:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 4599 states have (on average 1.7232006958034356) internal successors, (7925), 5436 states have internal predecessors, (7925), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 8017 transitions. [2023-11-06 22:39:17,651 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 8017 transitions. Word has length 68 [2023-11-06 22:39:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:17,652 INFO L495 AbstractCegarLoop]: Abstraction has 5482 states and 8017 transitions. [2023-11-06 22:39:17,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 8017 transitions. [2023-11-06 22:39:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:39:17,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:17,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:17,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:17,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr397REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:17,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2012708671, now seen corresponding path program 1 times [2023-11-06 22:39:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787339240] [2023-11-06 22:39:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:17,874 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 [2023-11-06 22:39:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:17,875 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:17,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:39:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:18,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:39:18,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:18,346 INFO L351 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 [2023-11-06 22:39:18,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:39:18,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:18,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:39:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:18,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:18,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787339240] [2023-11-06 22:39:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787339240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753936255] [2023-11-06 22:39:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:18,475 INFO L87 Difference]: Start difference. First operand 5482 states and 8017 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:27,599 INFO L93 Difference]: Finished difference Result 5481 states and 8013 transitions. [2023-11-06 22:39:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-06 22:39:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:27,607 INFO L225 Difference]: With dead ends: 5481 [2023-11-06 22:39:27,607 INFO L226 Difference]: Without dead ends: 5481 [2023-11-06 22:39:27,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:27,608 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 2 mSDsluCounter, 3522 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5655 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:27,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5655 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-11-06 22:39:27,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2023-11-06 22:39:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2023-11-06 22:39:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 4595 states have (on average 1.7238302502720348) internal successors, (7921), 5435 states have internal predecessors, (7921), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 8013 transitions. [2023-11-06 22:39:27,693 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 8013 transitions. Word has length 68 [2023-11-06 22:39:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:27,694 INFO L495 AbstractCegarLoop]: Abstraction has 5481 states and 8013 transitions. [2023-11-06 22:39:27,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 8013 transitions. [2023-11-06 22:39:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:39:27,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:27,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:27,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:27,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:27,914 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:27,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash -544834176, now seen corresponding path program 1 times [2023-11-06 22:39:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171195927] [2023-11-06 22:39:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:27,915 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 [2023-11-06 22:39:27,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:27,917 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:27,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 22:39:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:28,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:39:28,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:28,341 INFO L351 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 [2023-11-06 22:39:28,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:28,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 22:39:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:28,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:28,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171195927] [2023-11-06 22:39:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171195927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:28,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:28,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:28,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131848865] [2023-11-06 22:39:28,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:28,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:28,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:28,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:28,405 INFO L87 Difference]: Start difference. First operand 5481 states and 8013 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:35,277 INFO L93 Difference]: Finished difference Result 5480 states and 8010 transitions. [2023-11-06 22:39:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:35,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-06 22:39:35,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:35,284 INFO L225 Difference]: With dead ends: 5480 [2023-11-06 22:39:35,284 INFO L226 Difference]: Without dead ends: 5480 [2023-11-06 22:39:35,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:35,285 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 4 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:35,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5649 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-06 22:39:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2023-11-06 22:39:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 5480. [2023-11-06 22:39:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 4595 states have (on average 1.723177366702938) internal successors, (7918), 5434 states have internal predecessors, (7918), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 8010 transitions. [2023-11-06 22:39:35,368 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 8010 transitions. Word has length 68 [2023-11-06 22:39:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:35,368 INFO L495 AbstractCegarLoop]: Abstraction has 5480 states and 8010 transitions. [2023-11-06 22:39:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 8010 transitions. [2023-11-06 22:39:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:39:35,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:35,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:35,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:35,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:35,585 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:35,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:35,586 INFO L85 PathProgramCache]: Analyzing trace with hash -544834175, now seen corresponding path program 1 times [2023-11-06 22:39:35,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:35,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102268787] [2023-11-06 22:39:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:35,586 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 [2023-11-06 22:39:35,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:35,587 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:35,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-06 22:39:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:35,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:39:35,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:36,004 INFO L351 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 [2023-11-06 22:39:36,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:39:36,039 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:36,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-06 22:39:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:36,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:36,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102268787] [2023-11-06 22:39:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102268787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309920637] [2023-11-06 22:39:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:36,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:36,117 INFO L87 Difference]: Start difference. First operand 5480 states and 8010 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:45,630 INFO L93 Difference]: Finished difference Result 5479 states and 8007 transitions. [2023-11-06 22:39:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2023-11-06 22:39:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:45,636 INFO L225 Difference]: With dead ends: 5479 [2023-11-06 22:39:45,636 INFO L226 Difference]: Without dead ends: 5479 [2023-11-06 22:39:45,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:45,637 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 2 mSDsluCounter, 3519 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:45,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5650 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-06 22:39:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2023-11-06 22:39:45,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 5479. [2023-11-06 22:39:45,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5479 states, 4592 states have (on average 1.723649825783972) internal successors, (7915), 5433 states have internal predecessors, (7915), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:39:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5479 states to 5479 states and 8007 transitions. [2023-11-06 22:39:45,715 INFO L78 Accepts]: Start accepts. Automaton has 5479 states and 8007 transitions. Word has length 68 [2023-11-06 22:39:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:45,716 INFO L495 AbstractCegarLoop]: Abstraction has 5479 states and 8007 transitions. [2023-11-06 22:39:45,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-06 22:39:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5479 states and 8007 transitions. [2023-11-06 22:39:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:39:45,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:45,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:45,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-06 22:39:45,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:45,934 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:45,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash 499611495, now seen corresponding path program 1 times [2023-11-06 22:39:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156969236] [2023-11-06 22:39:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:45,935 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 [2023-11-06 22:39:45,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:45,936 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:45,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-06 22:39:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:46,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:46,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:46,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:46,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156969236] [2023-11-06 22:39:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156969236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713433685] [2023-11-06 22:39:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:46,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:46,419 INFO L87 Difference]: Start difference. First operand 5479 states and 8007 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:39:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:46,513 INFO L93 Difference]: Finished difference Result 5482 states and 8016 transitions. [2023-11-06 22:39:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-11-06 22:39:46,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:46,559 INFO L225 Difference]: With dead ends: 5482 [2023-11-06 22:39:46,560 INFO L226 Difference]: Without dead ends: 5482 [2023-11-06 22:39:46,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:46,561 INFO L413 NwaCegarLoop]: 2130 mSDtfsCounter, 2 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:46,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6382 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:39:46,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2023-11-06 22:39:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5482. [2023-11-06 22:39:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 4594 states have (on average 1.7235524597300826) internal successors, (7918), 5436 states have internal predecessors, (7918), 46 states have call successors, (46), 3 states have call predecessors, (46), 4 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2023-11-06 22:39:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 8016 transitions. [2023-11-06 22:39:46,653 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 8016 transitions. Word has length 76 [2023-11-06 22:39:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:46,653 INFO L495 AbstractCegarLoop]: Abstraction has 5482 states and 8016 transitions. [2023-11-06 22:39:46,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:39:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 8016 transitions. [2023-11-06 22:39:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:39:46,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:46,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:46,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-06 22:39:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:46,872 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:46,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1446477438, now seen corresponding path program 1 times [2023-11-06 22:39:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435224362] [2023-11-06 22:39:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:46,874 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 [2023-11-06 22:39:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:46,875 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:46,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-06 22:39:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:47,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:39:47,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:47,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:47,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435224362] [2023-11-06 22:39:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435224362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:47,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:47,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:39:47,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806769444] [2023-11-06 22:39:47,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:47,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:39:47,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:47,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:39:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:39:47,520 INFO L87 Difference]: Start difference. First operand 5482 states and 8016 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:39:47,914 INFO L93 Difference]: Finished difference Result 5494 states and 8038 transitions. [2023-11-06 22:39:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:39:47,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2023-11-06 22:39:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:39:47,932 INFO L225 Difference]: With dead ends: 5494 [2023-11-06 22:39:47,933 INFO L226 Difference]: Without dead ends: 5494 [2023-11-06 22:39:47,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:39:47,934 INFO L413 NwaCegarLoop]: 2130 mSDtfsCounter, 10 mSDsluCounter, 6373 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8503 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:39:47,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8503 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:39:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2023-11-06 22:39:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 5492. [2023-11-06 22:39:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 4603 states have (on average 1.7234412339778404) internal successors, (7933), 5445 states have internal predecessors, (7933), 46 states have call successors, (46), 4 states have call predecessors, (46), 5 states have return successors, (52), 43 states have call predecessors, (52), 46 states have call successors, (52) [2023-11-06 22:39:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 8031 transitions. [2023-11-06 22:39:48,110 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 8031 transitions. Word has length 77 [2023-11-06 22:39:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:39:48,111 INFO L495 AbstractCegarLoop]: Abstraction has 5492 states and 8031 transitions. [2023-11-06 22:39:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:39:48,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 8031 transitions. [2023-11-06 22:39:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:39:48,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:39:48,113 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:48,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-06 22:39:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:39:48,331 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr400REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:39:48,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1122237145, now seen corresponding path program 2 times [2023-11-06 22:39:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:48,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657224319] [2023-11-06 22:39:48,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:48,333 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 [2023-11-06 22:39:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:48,334 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:39:48,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-06 22:39:49,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:49,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:49,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:39:49,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:49,041 INFO L351 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 [2023-11-06 22:39:49,070 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:49,071 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:49,072 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:49,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-06 22:39:49,204 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:39:49,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:39:49,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-11-06 22:39:49,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2023-11-06 22:39:49,680 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:39:49,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-06 22:39:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:39:49,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:49,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657224319] [2023-11-06 22:39:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657224319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:49,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:49,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:39:49,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261774948] [2023-11-06 22:39:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:39:49,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:49,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:39:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:49,714 INFO L87 Difference]: Start difference. First operand 5492 states and 8031 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:40:02,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:02,918 INFO L93 Difference]: Finished difference Result 5667 states and 7956 transitions. [2023-11-06 22:40:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-11-06 22:40:02,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:02,932 INFO L225 Difference]: With dead ends: 5667 [2023-11-06 22:40:02,932 INFO L226 Difference]: Without dead ends: 5667 [2023-11-06 22:40:02,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:40:02,933 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 2081 mSDsluCounter, 4643 mSDsCounter, 0 mSdLazyCounter, 4160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:02,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 6079 Invalid, 4190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 4160 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-11-06 22:40:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5667 states. [2023-11-06 22:40:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5667 to 5082. [2023-11-06 22:40:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 4194 states have (on average 1.7484501669051025) internal successors, (7333), 5038 states have internal predecessors, (7333), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:40:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 7424 transitions. [2023-11-06 22:40:03,011 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 7424 transitions. Word has length 80 [2023-11-06 22:40:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:03,012 INFO L495 AbstractCegarLoop]: Abstraction has 5082 states and 7424 transitions. [2023-11-06 22:40:03,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:40:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 7424 transitions. [2023-11-06 22:40:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:40:03,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:03,013 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:03,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:03,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:40:03,229 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:40:03,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 201523559, now seen corresponding path program 1 times [2023-11-06 22:40:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:40:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481165465] [2023-11-06 22:40:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:03,231 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 [2023-11-06 22:40:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:40:03,232 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:40:03,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-06 22:40:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:03,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:40:03,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:03,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:04,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:40:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481165465] [2023-11-06 22:40:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481165465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:04,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:40:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-06 22:40:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460759172] [2023-11-06 22:40:04,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:40:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:40:04,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:40:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:40:04,187 INFO L87 Difference]: Start difference. First operand 5082 states and 7424 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:40:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:05,111 INFO L93 Difference]: Finished difference Result 5103 states and 7468 transitions. [2023-11-06 22:40:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 22:40:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2023-11-06 22:40:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:05,122 INFO L225 Difference]: With dead ends: 5103 [2023-11-06 22:40:05,122 INFO L226 Difference]: Without dead ends: 5099 [2023-11-06 22:40:05,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:40:05,124 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 23 mSDsluCounter, 17009 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 19142 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:05,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 19142 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:40:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2023-11-06 22:40:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 5091. [2023-11-06 22:40:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 4203 states have (on average 1.7475612657625506) internal successors, (7345), 5047 states have internal predecessors, (7345), 43 states have call successors, (43), 4 states have call predecessors, (43), 5 states have return successors, (48), 40 states have call predecessors, (48), 43 states have call successors, (48) [2023-11-06 22:40:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 7436 transitions. [2023-11-06 22:40:05,190 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 7436 transitions. Word has length 80 [2023-11-06 22:40:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:05,191 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 7436 transitions. [2023-11-06 22:40:05,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:40:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 7436 transitions. [2023-11-06 22:40:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:40:05,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:05,193 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:05,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:05,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:40:05,408 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-06 22:40:05,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1784738823, now seen corresponding path program 2 times [2023-11-06 22:40:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:40:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205591623] [2023-11-06 22:40:05,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:40:05,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:40:05,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:40:05,411 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:40:05,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528fd16c-51be-40f0-a473-c178138c6ba7/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-06 22:40:06,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:40:06,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:06,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:40:06,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:06,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:07,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:40:07,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205591623] [2023-11-06 22:40:07,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205591623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:07,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:40:07,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-06 22:40:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781413436] [2023-11-06 22:40:07,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:07,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:40:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:40:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:40:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:40:07,096 INFO L87 Difference]: Start difference. First operand 5091 states and 7436 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)