./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:20:46,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:20:47,076 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-21 22:20:47,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:20:47,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:20:47,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:20:47,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:20:47,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:20:47,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:20:47,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:20:47,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:20:47,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:20:47,131 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:20:47,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:20:47,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:20:47,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:20:47,135 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:20:47,136 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:20:47,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:20:47,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:20:47,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:20:47,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:20:47,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:20:47,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:20:47,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:20:47,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:20:47,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:20:47,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:20:47,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:20:47,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:20:47,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:20:47,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:20:47,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:20:47,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:20:47,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:20:47,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:20:47,145 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_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 [2023-11-21 22:20:47,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:20:47,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:20:47,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:20:47,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:20:47,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:20:47,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-21 22:20:50,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:20:51,105 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:20:51,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-21 22:20:51,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/7d1a80a24/c9d908d5d9b94f23955d5033f419c8ec/FLAGd0bbdccfc [2023-11-21 22:20:51,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/7d1a80a24/c9d908d5d9b94f23955d5033f419c8ec [2023-11-21 22:20:51,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:20:51,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:20:51,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:20:51,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:20:51,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:20:51,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:20:51" (1/1) ... [2023-11-21 22:20:51,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f789b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:20:51, skipping insertion in model container [2023-11-21 22:20:51,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:20:51" (1/1) ... [2023-11-21 22:20:51,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:20:53,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:20:53,049 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) [2023-11-21 22:20:53,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3772dcff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:20:53, skipping insertion in model container [2023-11-21 22:20:53,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:20:53,051 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:20:53,053 INFO L158 Benchmark]: Toolchain (without parser) took 1866.49ms. Allocated memory is still 140.5MB. Free memory was 109.7MB in the beginning and 73.1MB in the end (delta: 36.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-21 22:20:53,053 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 140.5MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:20:53,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1860.14ms. Allocated memory is still 140.5MB. Free memory was 109.3MB in the beginning and 73.1MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-21 22:20:53,056 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 140.5MB. Free memory is still 107.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1860.14ms. Allocated memory is still 140.5MB. Free memory was 109.3MB in the beginning and 73.1MB in the end (delta: 36.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2215]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:20:55,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:20:55,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-21 22:20:55,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:20:55,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:20:55,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:20:55,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:20:55,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:20:55,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:20:55,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:20:55,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:20:55,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:20:55,637 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:20:55,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:20:55,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:20:55,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:20:55,639 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:20:55,640 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:20:55,641 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:20:55,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:20:55,642 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:20:55,642 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:20:55,643 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:20:55,644 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:20:55,644 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:20:55,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:20:55,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:20:55,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:20:55,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:20:55,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:20:55,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:20:55,648 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:20:55,649 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:20:55,649 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:20:55,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:20:55,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:20:55,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:20:55,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:20:55,651 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:20:55,652 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_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46eaa86a058d5f8f9ac1a5b9efbcb664547df2e8af2d76b8a7d936d3418cf7e2 [2023-11-21 22:20:56,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:20:56,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:20:56,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:20:56,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:20:56,071 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:20:56,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-21 22:20:59,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:20:59,760 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:20:59,761 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/sv-benchmarks/c/busybox-1.22.0/readlink-2.i [2023-11-21 22:20:59,804 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/150a3a246/b843ab8754594265a084c93c4163375b/FLAGede6208d1 [2023-11-21 22:20:59,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/data/150a3a246/b843ab8754594265a084c93c4163375b [2023-11-21 22:20:59,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:20:59,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:20:59,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:20:59,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:20:59,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:20:59,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:20:59" (1/1) ... [2023-11-21 22:20:59,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ed7a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:20:59, skipping insertion in model container [2023-11-21 22:20:59,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:20:59" (1/1) ... [2023-11-21 22:20:59,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:01,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:01,519 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:21:01,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:01,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:01,738 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:01,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:02,194 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:02,195 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:02,195 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:02,203 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:02,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02 WrapperNode [2023-11-21 22:21:02,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:02,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:02,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:02,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:02,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,436 INFO L138 Inliner]: procedures = 589, calls = 398, calls flagged for inlining = 29, calls inlined = 27, statements flattened = 1457 [2023-11-21 22:21:02,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:02,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:02,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:02,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:02,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:02,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:02,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:02,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:02,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (1/1) ... [2023-11-21 22:21:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:02,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:02,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-21 22:21:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-21 22:21:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-21 22:21:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:21:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:21:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 22:21:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 22:21:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 22:21:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:21:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 22:21:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:21:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-21 22:21:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-21 22:21:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-21 22:21:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-21 22:21:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 22:21:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 22:21:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 22:21:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-21 22:21:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-21 22:21:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:21:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 22:21:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 22:21:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:21:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:21:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:21:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:21:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:21:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:21:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-21 22:21:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 22:21:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:21:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:21:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 22:21:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-21 22:21:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 22:21:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-21 22:21:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-21 22:21:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 22:21:02,712 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 22:21:03,352 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:03,355 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:03,567 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 22:21:12,564 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:12,958 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:12,958 INFO L308 CfgBuilder]: Removed 28 assume(true) statements. [2023-11-21 22:21:12,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:12 BoogieIcfgContainer [2023-11-21 22:21:12,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:12,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:12,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:12,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:12,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:20:59" (1/3) ... [2023-11-21 22:21:12,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bad6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:12, skipping insertion in model container [2023-11-21 22:21:12,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:02" (2/3) ... [2023-11-21 22:21:12,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38bad6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:12, skipping insertion in model container [2023-11-21 22:21:12,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:12" (3/3) ... [2023-11-21 22:21:12,972 INFO L112 eAbstractionObserver]: Analyzing ICFG readlink-2.i [2023-11-21 22:21:12,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:12,991 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 437 error locations. [2023-11-21 22:21:13,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:13,114 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;@4d0272b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:13,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 437 error locations. [2023-11-21 22:21:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 932 states, 465 states have (on average 2.2559139784946236) internal successors, (1049), 899 states have internal predecessors, (1049), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-21 22:21:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:21:13,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:13,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:21:13,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 64451, now seen corresponding path program 1 times [2023-11-21 22:21:13,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750197292] [2023-11-21 22:21:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:13,170 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 [2023-11-21 22:21:13,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:13,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:13,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:13,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:13,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:13,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:21:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:13,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:13,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750197292] [2023-11-21 22:21:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750197292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:13,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127572125] [2023-11-21 22:21:13,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:13,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:13,835 INFO L87 Difference]: Start difference. First operand has 932 states, 465 states have (on average 2.2559139784946236) internal successors, (1049), 899 states have internal predecessors, (1049), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:17,628 INFO L93 Difference]: Finished difference Result 1074 states and 1241 transitions. [2023-11-21 22:21:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 22:21:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:17,656 INFO L225 Difference]: With dead ends: 1074 [2023-11-21 22:21:17,656 INFO L226 Difference]: Without dead ends: 1073 [2023-11-21 22:21:17,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:17,662 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 356 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:17,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1287 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-21 22:21:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-21 22:21:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 920. [2023-11-21 22:21:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 460 states have (on average 2.2021739130434783) internal successors, (1013), 892 states have internal predecessors, (1013), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1058 transitions. [2023-11-21 22:21:17,789 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1058 transitions. Word has length 2 [2023-11-21 22:21:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:17,790 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1058 transitions. [2023-11-21 22:21:17,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:17,792 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1058 transitions. [2023-11-21 22:21:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:21:17,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:17,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:21:17,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:17,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:21:17,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:18,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash 64452, now seen corresponding path program 1 times [2023-11-21 22:21:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:18,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014595484] [2023-11-21 22:21:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:18,001 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 [2023-11-21 22:21:18,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:18,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:18,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:18,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:21:18,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:18,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:21:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:18,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:18,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014595484] [2023-11-21 22:21:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014595484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509454974] [2023-11-21 22:21:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:18,351 INFO L87 Difference]: Start difference. First operand 920 states and 1058 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:23,813 INFO L93 Difference]: Finished difference Result 919 states and 1057 transitions. [2023-11-21 22:21:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 22:21:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:23,820 INFO L225 Difference]: With dead ends: 919 [2023-11-21 22:21:23,820 INFO L226 Difference]: Without dead ends: 919 [2023-11-21 22:21:23,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:23,822 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 8 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1525 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-21 22:21:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-11-21 22:21:23,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2023-11-21 22:21:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 460 states have (on average 2.2) internal successors, (1012), 891 states have internal predecessors, (1012), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1057 transitions. [2023-11-21 22:21:23,858 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1057 transitions. Word has length 2 [2023-11-21 22:21:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:23,859 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1057 transitions. [2023-11-21 22:21:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1057 transitions. [2023-11-21 22:21:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:21:23,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:23,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:21:23,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:24,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:21:24,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:24,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash 63573057, now seen corresponding path program 1 times [2023-11-21 22:21:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237672243] [2023-11-21 22:21:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:24,069 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 [2023-11-21 22:21:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:24,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:24,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:24,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:24,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:24,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:24,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237672243] [2023-11-21 22:21:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237672243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:24,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731896365] [2023-11-21 22:21:24,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:24,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:24,389 INFO L87 Difference]: Start difference. First operand 919 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-21 22:21:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:25,987 INFO L93 Difference]: Finished difference Result 922 states and 1060 transitions. [2023-11-21 22:21:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-21 22:21:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:25,995 INFO L225 Difference]: With dead ends: 922 [2023-11-21 22:21:25,995 INFO L226 Difference]: Without dead ends: 922 [2023-11-21 22:21:25,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:25,997 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 2 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:25,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1872 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 22:21:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-11-21 22:21:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 920. [2023-11-21 22:21:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 461 states have (on average 2.1973969631236443) internal successors, (1013), 892 states have internal predecessors, (1013), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1058 transitions. [2023-11-21 22:21:26,027 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1058 transitions. Word has length 4 [2023-11-21 22:21:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:26,028 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1058 transitions. [2023-11-21 22:21:26,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-21 22:21:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1058 transitions. [2023-11-21 22:21:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:21:26,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:26,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:21:26,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-21 22:21:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:21:26,235 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:26,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 63520007, now seen corresponding path program 1 times [2023-11-21 22:21:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651704216] [2023-11-21 22:21:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:26,238 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 [2023-11-21 22:21:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:26,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:26,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:26,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:21:26,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:26,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:21:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:26,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:26,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651704216] [2023-11-21 22:21:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651704216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:26,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257139931] [2023-11-21 22:21:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:26,649 INFO L87 Difference]: Start difference. First operand 920 states and 1058 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-21 22:21:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:33,583 INFO L93 Difference]: Finished difference Result 921 states and 1059 transitions. [2023-11-21 22:21:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:33,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-21 22:21:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:33,591 INFO L225 Difference]: With dead ends: 921 [2023-11-21 22:21:33,591 INFO L226 Difference]: Without dead ends: 921 [2023-11-21 22:21:33,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:33,593 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 8 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:33,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2115 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-21 22:21:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-11-21 22:21:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2023-11-21 22:21:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 462 states have (on average 2.1948051948051948) internal successors, (1014), 893 states have internal predecessors, (1014), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1059 transitions. [2023-11-21 22:21:33,623 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1059 transitions. Word has length 4 [2023-11-21 22:21:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:33,623 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1059 transitions. [2023-11-21 22:21:33,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-21 22:21:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1059 transitions. [2023-11-21 22:21:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:21:33,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:33,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:21:33,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:21:33,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:33,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash 914811580, now seen corresponding path program 1 times [2023-11-21 22:21:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:33,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973827376] [2023-11-21 22:21:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:33,835 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 [2023-11-21 22:21:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:33,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:33,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:34,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:34,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:34,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:34,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973827376] [2023-11-21 22:21:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973827376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:34,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:34,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-21 22:21:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290579793] [2023-11-21 22:21:34,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:34,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:21:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:21:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:21:34,240 INFO L87 Difference]: Start difference. First operand 921 states and 1059 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:37,197 INFO L93 Difference]: Finished difference Result 928 states and 1066 transitions. [2023-11-21 22:21:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:37,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:21:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:37,205 INFO L225 Difference]: With dead ends: 928 [2023-11-21 22:21:37,205 INFO L226 Difference]: Without dead ends: 928 [2023-11-21 22:21:37,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:37,206 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 7 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:37,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3744 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 22:21:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-11-21 22:21:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 926. [2023-11-21 22:21:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 467 states have (on average 2.1862955032119915) internal successors, (1021), 898 states have internal predecessors, (1021), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:21:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1066 transitions. [2023-11-21 22:21:37,235 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1066 transitions. Word has length 6 [2023-11-21 22:21:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:37,235 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1066 transitions. [2023-11-21 22:21:37,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1066 transitions. [2023-11-21 22:21:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:21:37,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:37,236 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:21:37,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 22:21:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:21:37,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 434 more)] === [2023-11-21 22:21:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash 914758530, now seen corresponding path program 1 times [2023-11-21 22:21:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:21:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473925725] [2023-11-21 22:21:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:37,444 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 [2023-11-21 22:21:37,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:21:37,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:21:37,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9356de38-8cec-4739-b497-0c48fd327d67/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:21:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:37,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:21:37,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:37,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:21:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:37,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:21:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:38,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:21:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473925725] [2023-11-21 22:21:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473925725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:21:38,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:21:38,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-21 22:21:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503603132] [2023-11-21 22:21:38,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:21:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:21:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:21:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:21:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:38,464 INFO L87 Difference]: Start difference. First operand 926 states and 1066 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)