./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:17:23,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:17:23,948 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:17:23,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:17:23,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:17:23,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:17:23,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:17:23,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:17:23,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:17:23,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:17:23,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:17:23,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:17:23,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:17:23,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:17:23,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:17:23,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:17:23,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:17:23,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:17:23,988 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:17:23,989 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:17:23,989 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:17:23,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:17:23,991 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:17:23,991 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:17:23,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:17:23,992 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:17:23,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:17:23,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:17:23,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:17:23,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:17:23,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:23,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:17:23,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:17:23,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:17:23,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:17:23,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:17:23,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:17:23,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:17:23,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:17:23,998 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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2023-11-21 22:17:24,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:17:24,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:17:24,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:17:24,396 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:17:24,396 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:17:24,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-21 22:17:27,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:17:27,946 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:17:27,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-21 22:17:27,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/e89f48071/d9cc232ea8fb443ebac293877218a665/FLAG868e1d7c2 [2023-11-21 22:17:27,988 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/e89f48071/d9cc232ea8fb443ebac293877218a665 [2023-11-21 22:17:27,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:17:27,992 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:17:27,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:27,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:17:28,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:17:28,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:27" (1/1) ... [2023-11-21 22:17:28,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4fe2ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:28, skipping insertion in model container [2023-11-21 22:17:28,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:27" (1/1) ... [2023-11-21 22:17:28,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:28,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:28,586 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 22:17:28,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d7e5bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:28, skipping insertion in model container [2023-11-21 22:17:28,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:28,587 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:17:28,589 INFO L158 Benchmark]: Toolchain (without parser) took 595.78ms. Allocated memory is still 186.6MB. Free memory was 147.4MB in the beginning and 143.4MB in the end (delta: 4.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:17:28,590 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:17:28,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.39ms. Allocated memory is still 186.6MB. Free memory was 146.8MB in the beginning and 143.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:17:28,594 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 130.0MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.39ms. Allocated memory is still 186.6MB. Free memory was 146.8MB in the beginning and 143.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 32bit --witnessprinter.graph.data.programhash 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:17:31,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:17:31,211 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:17:31,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:17:31,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:17:31,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:17:31,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:17:31,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:17:31,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:17:31,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:17:31,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:17:31,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:17:31,270 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:17:31,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:17:31,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:17:31,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:17:31,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:17:31,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:17:31,273 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:17:31,274 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:17:31,274 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:17:31,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:17:31,276 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:17:31,276 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:17:31,276 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:17:31,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:17:31,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:17:31,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:17:31,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:17:31,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:17:31,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:17:31,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:17:31,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:31,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:17:31,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:17:31,282 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:17:31,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:17:31,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:17:31,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:17:31,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:17:31,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:17:31,285 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:17:31,285 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_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2023-11-21 22:17:31,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:17:31,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:17:31,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:17:31,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:17:31,689 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:17:31,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-21 22:17:34,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:17:35,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:17:35,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-21 22:17:35,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/81b4587b6/e03cec4d7cf24e56a5b49046fc35b45d/FLAG34ae3bffc [2023-11-21 22:17:35,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/data/81b4587b6/e03cec4d7cf24e56a5b49046fc35b45d [2023-11-21 22:17:35,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:17:35,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:17:35,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:35,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:17:35,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:17:35,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:35" (1/1) ... [2023-11-21 22:17:35,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c1011e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:35, skipping insertion in model container [2023-11-21 22:17:35,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:17:35" (1/1) ... [2023-11-21 22:17:35,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:35,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:35,840 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:17:35,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:17:35,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:35,998 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:17:36,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:17:36,139 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:17:36,147 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:17:36,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36 WrapperNode [2023-11-21 22:17:36,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:17:36,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:36,150 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:17:36,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:17:36,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,217 INFO L138 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 95 [2023-11-21 22:17:36,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:17:36,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:17:36,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:17:36,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:17:36,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:17:36,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:17:36,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:17:36,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:17:36,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (1/1) ... [2023-11-21 22:17:36,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:17:36,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:17:36,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:17:36,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:17:36,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:17:36,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:17:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2023-11-21 22:17:36,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2023-11-21 22:17:36,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:17:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:17:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:17:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:17:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:17:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:17:36,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:17:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:17:36,523 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:17:36,526 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:17:36,976 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:17:37,040 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:17:37,045 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:17:37,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:37 BoogieIcfgContainer [2023-11-21 22:17:37,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:17:37,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:17:37,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:17:37,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:17:37,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:17:35" (1/3) ... [2023-11-21 22:17:37,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b75d98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:37, skipping insertion in model container [2023-11-21 22:17:37,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:17:36" (2/3) ... [2023-11-21 22:17:37,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b75d98a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:17:37, skipping insertion in model container [2023-11-21 22:17:37,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:17:37" (3/3) ... [2023-11-21 22:17:37,059 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2023-11-21 22:17:37,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:17:37,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-21 22:17:37,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:17:37,152 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;@68910d7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:17:37,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-21 22:17:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 69 states have internal predecessors, (74), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:17:37,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:37,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:37,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:37,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -917734369, now seen corresponding path program 1 times [2023-11-21 22:17:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986954430] [2023-11-21 22:17:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:37,190 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 22:17:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:37,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:37,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:37,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:17:37,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:37,771 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 22:17:37,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:37,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986954430] [2023-11-21 22:17:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986954430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:37,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:37,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:17:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106527746] [2023-11-21 22:17:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:37,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:17:37,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:37,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:17:37,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:17:37,819 INFO L87 Difference]: Start difference. First operand has 78 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 69 states have internal predecessors, (74), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:17:38,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:38,502 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2023-11-21 22:17:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:17:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-21 22:17:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:38,514 INFO L225 Difference]: With dead ends: 80 [2023-11-21 22:17:38,514 INFO L226 Difference]: Without dead ends: 77 [2023-11-21 22:17:38,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:17:38,520 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 7 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:38,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 271 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:17:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-21 22:17:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-21 22:17:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 39 states have (on average 1.8461538461538463) internal successors, (72), 68 states have internal predecessors, (72), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2023-11-21 22:17:38,566 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 8 [2023-11-21 22:17:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:38,568 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2023-11-21 22:17:38,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:17:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2023-11-21 22:17:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:17:38,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:38,570 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:38,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:38,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:38,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1674848261, now seen corresponding path program 1 times [2023-11-21 22:17:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722594430] [2023-11-21 22:17:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:38,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:17:38,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:38,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:38,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:38,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:17:38,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:17:38,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:17:39,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722594430] [2023-11-21 22:17:39,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722594430] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:39,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:39,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-21 22:17:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718843433] [2023-11-21 22:17:39,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:39,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:17:39,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:39,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:17:39,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:39,608 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:39,702 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2023-11-21 22:17:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:17:39,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-21 22:17:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:39,705 INFO L225 Difference]: With dead ends: 76 [2023-11-21 22:17:39,705 INFO L226 Difference]: Without dead ends: 76 [2023-11-21 22:17:39,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:17:39,707 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 59 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:39,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 219 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:17:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-21 22:17:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-21 22:17:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 39 states have (on average 1.8205128205128205) internal successors, (71), 67 states have internal predecessors, (71), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2023-11-21 22:17:39,718 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 12 [2023-11-21 22:17:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:39,718 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2023-11-21 22:17:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:39,719 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2023-11-21 22:17:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:17:39,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:39,719 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:39,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:39,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:39,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1674848277, now seen corresponding path program 1 times [2023-11-21 22:17:39,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:39,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585538791] [2023-11-21 22:17:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:39,930 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 22:17:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:39,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:39,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:40,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:17:40,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:40,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:17:40,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:17:40,640 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 22:17:40,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:17:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:40,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:41,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585538791] [2023-11-21 22:17:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585538791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [213220836] [2023-11-21 22:17:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:41,796 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 22:17:41,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 [2023-11-21 22:17:41,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 22:17:41,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-21 22:17:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:41,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:17:41,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:41,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:17:42,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:17:42,364 INFO L349 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2023-11-21 22:17:42,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 1 [2023-11-21 22:17:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:42,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:44,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [213220836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:17:44,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:17:44,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 16 [2023-11-21 22:17:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150623777] [2023-11-21 22:17:44,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:44,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-21 22:17:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-21 22:17:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:17:44,167 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:17:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:45,920 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2023-11-21 22:17:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:17:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 12 [2023-11-21 22:17:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:45,927 INFO L225 Difference]: With dead ends: 103 [2023-11-21 22:17:45,927 INFO L226 Difference]: Without dead ends: 103 [2023-11-21 22:17:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:17:45,935 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 164 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:45,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 258 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 22:17:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-21 22:17:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2023-11-21 22:17:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 73 states have internal predecessors, (79), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2023-11-21 22:17:45,953 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 12 [2023-11-21 22:17:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:45,953 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2023-11-21 22:17:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:17:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2023-11-21 22:17:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:17:45,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:45,955 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:45,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-11-21 22:17:46,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:46,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1674848276, now seen corresponding path program 1 times [2023-11-21 22:17:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188715391] [2023-11-21 22:17:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:46,359 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 22:17:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:46,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:46,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:46,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:17:46,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:46,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 22:17:46,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:17:46,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:17:46,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:17:47,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:17:47,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:17:47,204 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:17:47,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2023-11-21 22:17:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:47,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:48,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188715391] [2023-11-21 22:17:48,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188715391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:48,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656629057] [2023-11-21 22:17:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:48,642 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 22:17:48,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 [2023-11-21 22:17:48,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 22:17:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-21 22:17:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:48,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:17:48,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:48,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:17:48,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 22:17:48,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:17:48,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:17:49,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:17:49,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:17:49,281 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:17:49,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 38 [2023-11-21 22:17:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:17:49,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:17:50,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [656629057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:17:50,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:17:50,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2023-11-21 22:17:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468659069] [2023-11-21 22:17:50,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:17:50,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:17:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:17:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:17:50,328 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:51,956 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2023-11-21 22:17:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:17:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-21 22:17:51,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:51,958 INFO L225 Difference]: With dead ends: 101 [2023-11-21 22:17:51,959 INFO L226 Difference]: Without dead ends: 101 [2023-11-21 22:17:51,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:17:51,960 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 190 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 122 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 433 Invalid, 1 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 22:17:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-21 22:17:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2023-11-21 22:17:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 46 states have (on average 1.673913043478261) internal successors, (77), 71 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2023-11-21 22:17:51,973 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 12 [2023-11-21 22:17:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:51,974 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2023-11-21 22:17:51,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2023-11-21 22:17:51,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:17:51,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:51,975 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:51,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-21 22:17:52,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:52,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:52,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:52,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:52,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1920521312, now seen corresponding path program 1 times [2023-11-21 22:17:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:52,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003808176] [2023-11-21 22:17:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:52,379 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 22:17:52,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:52,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:52,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (8)] Waiting until timeout for monitored process [2023-11-21 22:17:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:52,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:17:52,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:53,634 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~c11~0#1.base| (_ BitVec 32))) (and (not (= |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 32))) (not (= (_ bv0 32) (bvadd |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv1 32)))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))))) is different from true [2023-11-21 22:17:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:17:53,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:53,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:53,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003808176] [2023-11-21 22:17:53,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003808176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:53,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:53,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:17:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428660047] [2023-11-21 22:17:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:53,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:17:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:17:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=109, Unknown=1, NotChecked=20, Total=156 [2023-11-21 22:17:53,655 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:54,987 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2023-11-21 22:17:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:17:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-21 22:17:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:54,989 INFO L225 Difference]: With dead ends: 86 [2023-11-21 22:17:54,989 INFO L226 Difference]: Without dead ends: 81 [2023-11-21 22:17:54,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=215, Unknown=1, NotChecked=30, Total=306 [2023-11-21 22:17:54,990 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:54,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 298 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 401 Invalid, 1 Unknown, 82 Unchecked, 0.9s Time] [2023-11-21 22:17:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-21 22:17:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-21 22:17:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 71 states have internal predecessors, (76), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2023-11-21 22:17:54,998 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 16 [2023-11-21 22:17:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:54,998 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2023-11-21 22:17:54,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:17:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2023-11-21 22:17:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:17:54,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:55,000 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:55,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (8)] Ended with exit code 0 [2023-11-21 22:17:55,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:55,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:55,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 627501756, now seen corresponding path program 1 times [2023-11-21 22:17:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956485612] [2023-11-21 22:17:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:55,203 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 22:17:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:55,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:55,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (9)] Waiting until timeout for monitored process [2023-11-21 22:17:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:55,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:17:55,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:55,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:17:55,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:17:55,700 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-21 22:17:55,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-21 22:17:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:17:56,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:56,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956485612] [2023-11-21 22:17:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956485612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:56,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:56,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:17:56,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116966499] [2023-11-21 22:17:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:56,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:17:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:56,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:17:56,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:17:56,083 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:57,265 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2023-11-21 22:17:57,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:17:57,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2023-11-21 22:17:57,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:57,267 INFO L225 Difference]: With dead ends: 101 [2023-11-21 22:17:57,267 INFO L226 Difference]: Without dead ends: 101 [2023-11-21 22:17:57,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:17:57,268 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 164 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:57,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 192 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:17:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-21 22:17:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92. [2023-11-21 22:17:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.543859649122807) internal successors, (88), 81 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-11-21 22:17:57,286 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 18 [2023-11-21 22:17:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:57,286 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-11-21 22:17:57,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-11-21 22:17:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:17:57,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:57,288 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:57,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:17:57,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:57,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 627501757, now seen corresponding path program 1 times [2023-11-21 22:17:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:57,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320741292] [2023-11-21 22:17:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:57,499 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 22:17:57,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:57,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:57,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (10)] Waiting until timeout for monitored process [2023-11-21 22:17:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:57,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:17:57,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:57,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:17:57,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 22:17:57,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:17:57,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:17:58,104 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-21 22:17:58,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-21 22:17:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:17:58,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:17:58,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:17:58,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320741292] [2023-11-21 22:17:58,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320741292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:17:58,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:17:58,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:17:58,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194485300] [2023-11-21 22:17:58,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:17:58,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:17:58,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:17:58,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:17:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:17:58,462 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:17:59,351 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2023-11-21 22:17:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:17:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2023-11-21 22:17:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:17:59,352 INFO L225 Difference]: With dead ends: 92 [2023-11-21 22:17:59,352 INFO L226 Difference]: Without dead ends: 92 [2023-11-21 22:17:59,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:17:59,353 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 47 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:17:59,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 324 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:17:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-21 22:17:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2023-11-21 22:17:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 80 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:17:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2023-11-21 22:17:59,361 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 18 [2023-11-21 22:17:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:17:59,361 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2023-11-21 22:17:59,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:17:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2023-11-21 22:17:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 22:17:59,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:17:59,363 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:17:59,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (10)] Ended with exit code 0 [2023-11-21 22:17:59,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:59,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:17:59,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:17:59,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2022278844, now seen corresponding path program 1 times [2023-11-21 22:17:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:17:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117301816] [2023-11-21 22:17:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:17:59,567 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 22:17:59,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:17:59,568 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:17:59,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (11)] Waiting until timeout for monitored process [2023-11-21 22:17:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:17:59,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:17:59,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:17:59,815 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-21 22:17:59,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-21 22:18:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:18:00,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:18:00,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:18:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117301816] [2023-11-21 22:18:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117301816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:00,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:18:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604021578] [2023-11-21 22:18:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:18:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:18:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:18:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:18:00,061 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 9 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:18:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:00,914 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-11-21 22:18:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:18:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-21 22:18:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:00,916 INFO L225 Difference]: With dead ends: 99 [2023-11-21 22:18:00,916 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 22:18:00,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:18:00,917 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:00,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 201 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:18:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 22:18:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2023-11-21 22:18:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 79 states have internal predecessors, (86), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:18:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2023-11-21 22:18:00,924 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 19 [2023-11-21 22:18:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:00,925 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2023-11-21 22:18:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:18:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2023-11-21 22:18:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 22:18:00,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:00,926 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:00,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (11)] Ended with exit code 0 [2023-11-21 22:18:01,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:18:01,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:18:01,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2022278843, now seen corresponding path program 1 times [2023-11-21 22:18:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:18:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66784277] [2023-11-21 22:18:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:01,130 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 22:18:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:18:01,131 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:18:01,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (12)] Waiting until timeout for monitored process [2023-11-21 22:18:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:01,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-21 22:18:01,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:01,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:18:01,313 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 22:18:01,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:18:01,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:18:01,777 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 22:18:01,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:18:01,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:18:02,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:18:02,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:18:02,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:18:02,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:18:02,952 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:18:02,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2023-11-21 22:18:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:03,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:04,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:18:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66784277] [2023-11-21 22:18:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66784277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260757070] [2023-11-21 22:18:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:04,526 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 22:18:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 [2023-11-21 22:18:04,529 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 22:18:04,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-21 22:18:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:04,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:18:04,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:04,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:18:05,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:18:05,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:18:05,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:18:05,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-21 22:18:05,635 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:18:05,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2023-11-21 22:18:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:06,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1260757070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:06,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:18:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-11-21 22:18:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435449970] [2023-11-21 22:18:06,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-21 22:18:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:18:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-21 22:18:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:18:06,846 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-21 22:18:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:10,088 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-11-21 22:18:10,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 22:18:10,089 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 19 [2023-11-21 22:18:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:10,090 INFO L225 Difference]: With dead ends: 99 [2023-11-21 22:18:10,090 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 22:18:10,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2023-11-21 22:18:10,091 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 282 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:10,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 150 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 22:18:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 22:18:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2023-11-21 22:18:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 73 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:18:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2023-11-21 22:18:10,098 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 19 [2023-11-21 22:18:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:10,098 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2023-11-21 22:18:10,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-21 22:18:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2023-11-21 22:18:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 22:18:10,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:10,100 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:10,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (12)] Ended with exit code 0 [2023-11-21 22:18:10,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:18:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt [2023-11-21 22:18:10,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-21 22:18:10,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1733868449, now seen corresponding path program 1 times [2023-11-21 22:18:10,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:18:10,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431085495] [2023-11-21 22:18:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:10,504 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 22:18:10,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:18:10,506 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 22:18:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/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 (14)] Waiting until timeout for monitored process [2023-11-21 22:18:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:10,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-21 22:18:10,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:10,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:18:10,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:18:11,054 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:18:11,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2023-11-21 22:18:11,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:18:11,682 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-21 22:18:11,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 49 [2023-11-21 22:18:11,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2023-11-21 22:18:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:11,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:11,930 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2023-11-21 22:18:11,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2023-11-21 22:18:12,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:18:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431085495] [2023-11-21 22:18:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431085495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:12,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1388238023] [2023-11-21 22:18:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:12,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 22:18:12,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 [2023-11-21 22:18:12,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 22:18:12,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc1e2062-a676-49f5-8486-dfb8d2e859d7/bin/uautomizer-verify-bycVGegfSx/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-21 22:18:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:12,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-21 22:18:12,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:18:12,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-21 22:18:12,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-21 22:18:12,578 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:18:12,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2023-11-21 22:18:12,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-21 22:18:23,368 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-21 22:18:23,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2023-11-21 22:18:23,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-11-21 22:18:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:23,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:18:23,560 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2023-11-21 22:18:23,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2023-11-21 22:18:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1388238023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:23,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:18:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2023-11-21 22:18:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498392538] [2023-11-21 22:18:23,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:18:23,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 22:18:23,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:18:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 22:18:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=521, Unknown=8, NotChecked=0, Total=600 [2023-11-21 22:18:23,657 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5)