./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya --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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:57:51,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:57:51,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:57:51,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:57:51,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:57:51,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:57:51,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:57:51,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:57:51,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:57:51,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:57:51,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:57:51,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:57:51,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:57:51,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:57:51,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:57:51,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:57:51,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:57:51,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:57:51,427 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:57:51,427 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:57:51,428 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:57:51,432 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:57:51,433 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:57:51,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:57:51,434 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:57:51,434 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:57:51,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:57:51,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:57:51,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:57:51,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:57:51,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:57:51,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:57:51,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:57:51,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:57:51,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:57:51,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:57:51,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:57:51,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:57:51,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:57:51,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:57:51,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:57:51,440 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_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-11-29 03:57:51,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:57:51,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:57:51,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:57:51,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:57:51,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:57:51,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-11-29 03:57:54,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:57:54,743 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:57:54,744 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-11-29 03:57:54,759 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/652971c25/96bbfb5d676843d3bafdd8fb8bb09e4a/FLAGba6b55a3c [2023-11-29 03:57:54,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/652971c25/96bbfb5d676843d3bafdd8fb8bb09e4a [2023-11-29 03:57:54,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:57:54,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:57:54,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:57:54,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:57:54,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:57:54,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:57:54" (1/1) ... [2023-11-29 03:57:54,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221e93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:54, skipping insertion in model container [2023-11-29 03:57:54,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:57:54" (1/1) ... [2023-11-29 03:57:54,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:57:55,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:57:55,075 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) [2023-11-29 03:57:55,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3809927c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:57:55, skipping insertion in model container [2023-11-29 03:57:55,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:57:55,076 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 03:57:55,077 INFO L158 Benchmark]: Toolchain (without parser) took 303.13ms. Allocated memory is still 165.7MB. Free memory was 118.1MB in the beginning and 106.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:57:55,078 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:57:55,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.46ms. Allocated memory is still 165.7MB. Free memory was 118.1MB in the beginning and 106.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:57:55,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.46ms. Allocated memory is still 165.7MB. Free memory was 118.1MB in the beginning and 106.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 545]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya --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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:57:56,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:57:56,827 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 03:57:56,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:57:56,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:57:56,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:57:56,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:57:56,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:57:56,864 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:57:56,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:57:56,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:57:56,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:57:56,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:57:56,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:57:56,868 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:57:56,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:57:56,869 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:57:56,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:57:56,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:57:56,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:57:56,871 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:57:56,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:57:56,872 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:57:56,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:57:56,873 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:57:56,873 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 03:57:56,874 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 03:57:56,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:57:56,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:57:56,875 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:57:56,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:57:56,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:57:56,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:57:56,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:57:56,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:57:56,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:57:56,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:57:56,877 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 03:57:56,878 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 03:57:56,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:57:56,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:57:56,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:57:56,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:57:56,879 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 03:57:56,879 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_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2023-11-29 03:57:57,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:57:57,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:57:57,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:57:57,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:57:57,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:57:57,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-11-29 03:57:59,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:58:00,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:58:00,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2023-11-29 03:58:00,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/60631ea35/c882a7dccefe4c6c822bbd76b3bc022f/FLAGa1c01a9e6 [2023-11-29 03:58:00,248 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/data/60631ea35/c882a7dccefe4c6c822bbd76b3bc022f [2023-11-29 03:58:00,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:58:00,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:58:00,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:00,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:58:00,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:58:00,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681627b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00, skipping insertion in model container [2023-11-29 03:58:00,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:58:00,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:00,571 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 03:58:00,580 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:58:00,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:00,618 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:58:00,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:58:00,681 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:58:00,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00 WrapperNode [2023-11-29 03:58:00,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:58:00,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:00,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:58:00,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:58:00,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,760 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-29 03:58:00,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:58:00,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:58:00,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:58:00,761 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:58:00,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,793 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [1, 2, 3]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 3 writes are split as follows [1, 1, 1]. [2023-11-29 03:58:00,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:58:00,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:58:00,814 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:58:00,814 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:58:00,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (1/1) ... [2023-11-29 03:58:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:58:00,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:58:00,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:58:00,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 03:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 03:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 03:58:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:58:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:58:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 03:58:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 03:58:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 03:58:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:58:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:58:01,007 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:58:01,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:58:01,292 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:58:01,323 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:58:01,323 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 03:58:01,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:01 BoogieIcfgContainer [2023-11-29 03:58:01,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:58:01,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:58:01,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:58:01,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:58:01,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:58:00" (1/3) ... [2023-11-29 03:58:01,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0e337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:01, skipping insertion in model container [2023-11-29 03:58:01,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:58:00" (2/3) ... [2023-11-29 03:58:01,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0e337e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:58:01, skipping insertion in model container [2023-11-29 03:58:01,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:58:01" (3/3) ... [2023-11-29 03:58:01,332 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca-2.i [2023-11-29 03:58:01,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:58:01,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-29 03:58:01,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:58:01,389 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;@76087171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:58:01,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 03:58:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:58:01,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:01,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:58:01,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:01,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -310554848, now seen corresponding path program 1 times [2023-11-29 03:58:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547697898] [2023-11-29 03:58:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:01,415 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 [2023-11-29 03:58:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:01,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:01,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:01,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:58:01,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:01,643 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 03:58:01,644 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 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 03:58:01,676 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 03:58:01,677 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 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 03:58:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:01,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:01,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547697898] [2023-11-29 03:58:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547697898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:01,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:01,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:58:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705836963] [2023-11-29 03:58:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:58:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:01,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:58:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:01,807 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:01,910 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-11-29 03:58:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:58:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 03:58:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:01,921 INFO L225 Difference]: With dead ends: 34 [2023-11-29 03:58:01,921 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 03:58:01,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:01,926 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:01,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 29 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 03:58:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-29 03:58:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-29 03:58:01,954 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 6 [2023-11-29 03:58:01,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:01,955 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-29 03:58:01,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-29 03:58:01,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:58:01,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:01,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:58:01,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:02,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:02,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:02,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash -310554847, now seen corresponding path program 1 times [2023-11-29 03:58:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497457055] [2023-11-29 03:58:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:02,159 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 [2023-11-29 03:58:02,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:02,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:02,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:02,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:58:02,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:02,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:02,310 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 03:58:02,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 03:58:02,323 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 10 treesize of output 8 [2023-11-29 03:58:02,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:02,338 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 9 treesize of output 11 [2023-11-29 03:58:02,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:02,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:02,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497457055] [2023-11-29 03:58:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497457055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:02,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809217267] [2023-11-29 03:58:02,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:02,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:02,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:02,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:02,458 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:02,773 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2023-11-29 03:58:02,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:02,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 03:58:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:02,775 INFO L225 Difference]: With dead ends: 66 [2023-11-29 03:58:02,775 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 03:58:02,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:02,777 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 38 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:02,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 132 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:58:02,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 03:58:02,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2023-11-29 03:58:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.8) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-11-29 03:58:02,786 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 6 [2023-11-29 03:58:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:02,787 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-29 03:58:02,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-29 03:58:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 03:58:02,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:02,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 03:58:02,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:02,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:02,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -308707805, now seen corresponding path program 1 times [2023-11-29 03:58:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904031207] [2023-11-29 03:58:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:02,991 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 [2023-11-29 03:58:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:02,992 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:02,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:03,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:58:03,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:03,134 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 13 treesize of output 15 [2023-11-29 03:58:03,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:03,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:03,203 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 03:58:03,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2023-11-29 03:58:03,216 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 10 treesize of output 8 [2023-11-29 03:58:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:03,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:03,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904031207] [2023-11-29 03:58:03,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904031207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:03,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:03,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135552414] [2023-11-29 03:58:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:03,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:03,377 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:03,615 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2023-11-29 03:58:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:03,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 03:58:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:03,617 INFO L225 Difference]: With dead ends: 39 [2023-11-29 03:58:03,617 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 03:58:03,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:03,619 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 54 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 03:58:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2023-11-29 03:58:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.826086956521739) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-11-29 03:58:03,626 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 6 [2023-11-29 03:58:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:03,626 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-11-29 03:58:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-11-29 03:58:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 03:58:03,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:03,627 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:03,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:03,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:03,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2090380197, now seen corresponding path program 1 times [2023-11-29 03:58:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:03,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674167758] [2023-11-29 03:58:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:03,830 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 [2023-11-29 03:58:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:03,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:03,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 03:58:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:03,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:58:03,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:03,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:03,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:03,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674167758] [2023-11-29 03:58:03,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674167758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:03,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:03,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:58:03,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981185631] [2023-11-29 03:58:03,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:03,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:58:03,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:58:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:03,987 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:04,117 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2023-11-29 03:58:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:58:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 03:58:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:04,120 INFO L225 Difference]: With dead ends: 66 [2023-11-29 03:58:04,120 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 03:58:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:04,122 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:04,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 148 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:04,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 03:58:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 40. [2023-11-29 03:58:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2023-11-29 03:58:04,128 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 8 [2023-11-29 03:58:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:04,128 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2023-11-29 03:58:04,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2023-11-29 03:58:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 03:58:04,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:04,130 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:04,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 03:58:04,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:04,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -315372835, now seen corresponding path program 1 times [2023-11-29 03:58:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767014551] [2023-11-29 03:58:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:04,332 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 [2023-11-29 03:58:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:04,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:04,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:58:04,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:04,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:04,452 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 13 treesize of output 15 [2023-11-29 03:58:04,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:04,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:04,512 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 03:58:04,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2023-11-29 03:58:04,528 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 10 treesize of output 8 [2023-11-29 03:58:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:04,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:05,312 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:05,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767014551] [2023-11-29 03:58:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767014551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:05,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:05,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 03:58:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694397995] [2023-11-29 03:58:05,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:05,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:58:05,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:58:05,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:05,390 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:06,357 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-11-29 03:58:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:58:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 03:58:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:06,360 INFO L225 Difference]: With dead ends: 48 [2023-11-29 03:58:06,360 INFO L226 Difference]: Without dead ends: 48 [2023-11-29 03:58:06,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:58:06,361 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 99 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:06,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 94 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-29 03:58:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-11-29 03:58:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2023-11-29 03:58:06,368 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 8 [2023-11-29 03:58:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:06,368 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2023-11-29 03:58:06,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2023-11-29 03:58:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:58:06,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:06,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:06,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 03:58:06,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:06,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:06,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1189273670, now seen corresponding path program 1 times [2023-11-29 03:58:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:06,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701307522] [2023-11-29 03:58:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:06,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:06,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:06,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 03:58:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:06,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:58:06,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:06,644 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-29 03:58:06,645 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 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 03:58:06,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:06,674 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 03:58:06,675 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-29 03:58:06,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:06,685 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 03:58:06,686 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 03:58:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:06,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:06,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701307522] [2023-11-29 03:58:06,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701307522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:06,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:06,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:58:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558274503] [2023-11-29 03:58:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:06,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:58:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:06,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:58:06,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:06,703 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:06,766 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-11-29 03:58:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:58:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:58:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:06,767 INFO L225 Difference]: With dead ends: 45 [2023-11-29 03:58:06,767 INFO L226 Difference]: Without dead ends: 45 [2023-11-29 03:58:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:06,768 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-29 03:58:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-29 03:58:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 44 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-11-29 03:58:06,774 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 10 [2023-11-29 03:58:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:06,783 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-11-29 03:58:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-11-29 03:58:06,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:58:06,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:06,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:06,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 03:58:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:06,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:06,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1189273671, now seen corresponding path program 1 times [2023-11-29 03:58:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798290354] [2023-11-29 03:58:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:06,987 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 [2023-11-29 03:58:06,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:06,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:06,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:07,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:07,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:07,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,078 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 11 treesize of output 5 [2023-11-29 03:58:07,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:07,094 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:07,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:07,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798290354] [2023-11-29 03:58:07,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798290354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:07,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:07,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:58:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184313892] [2023-11-29 03:58:07,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:07,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:07,157 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:07,372 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2023-11-29 03:58:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:58:07,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:07,375 INFO L225 Difference]: With dead ends: 88 [2023-11-29 03:58:07,375 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 03:58:07,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:07,376 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:07,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 117 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 03:58:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2023-11-29 03:58:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2023-11-29 03:58:07,383 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 10 [2023-11-29 03:58:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:07,384 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2023-11-29 03:58:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2023-11-29 03:58:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 03:58:07,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:07,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:07,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:07,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:07,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:07,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash 379927045, now seen corresponding path program 1 times [2023-11-29 03:58:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:07,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445378382] [2023-11-29 03:58:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:07,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:07,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:07,587 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:07,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:07,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:58:07,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,679 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 13 treesize of output 7 [2023-11-29 03:58:07,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:07,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 03:58:07,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,713 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 10 treesize of output 8 [2023-11-29 03:58:07,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:07,732 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 13 treesize of output 7 [2023-11-29 03:58:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:07,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:07,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445378382] [2023-11-29 03:58:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445378382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:58:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181271981] [2023-11-29 03:58:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:07,886 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:08,091 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-11-29 03:58:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 03:58:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:08,093 INFO L225 Difference]: With dead ends: 65 [2023-11-29 03:58:08,093 INFO L226 Difference]: Without dead ends: 65 [2023-11-29 03:58:08,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:08,094 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 66 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:08,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 49 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-29 03:58:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2023-11-29 03:58:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 46 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2023-11-29 03:58:08,099 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 10 [2023-11-29 03:58:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:08,100 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2023-11-29 03:58:08,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2023-11-29 03:58:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 03:58:08,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:08,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:08,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 03:58:08,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:08,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:08,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 430762797, now seen corresponding path program 1 times [2023-11-29 03:58:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454902426] [2023-11-29 03:58:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:08,304 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 [2023-11-29 03:58:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:08,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:08,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:08,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:58:08,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:08,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:08,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:08,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454902426] [2023-11-29 03:58:08,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454902426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:08,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:08,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:58:08,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743574885] [2023-11-29 03:58:08,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:08,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:58:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:58:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:08,448 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:08,554 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2023-11-29 03:58:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:58:08,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 03:58:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:08,555 INFO L225 Difference]: With dead ends: 88 [2023-11-29 03:58:08,555 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 03:58:08,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:08,556 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 28 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:08,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 143 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 03:58:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2023-11-29 03:58:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.490909090909091) internal successors, (82), 65 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2023-11-29 03:58:08,563 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 12 [2023-11-29 03:58:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2023-11-29 03:58:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2023-11-29 03:58:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 03:58:08,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:08,564 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:08,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:08,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:08,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 37735787, now seen corresponding path program 1 times [2023-11-29 03:58:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950285727] [2023-11-29 03:58:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:08,766 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 [2023-11-29 03:58:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:08,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:08,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:08,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:58:08,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:08,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 03:58:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,876 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 10 treesize of output 8 [2023-11-29 03:58:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:58:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:08,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:58:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:09,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:09,452 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:09,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:09,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950285727] [2023-11-29 03:58:09,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950285727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:09,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:09,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 03:58:09,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945629673] [2023-11-29 03:58:09,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:09,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:58:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:58:09,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:09,493 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:10,313 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-11-29 03:58:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:58:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 03:58:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:10,314 INFO L225 Difference]: With dead ends: 73 [2023-11-29 03:58:10,315 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 03:58:10,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:58:10,316 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:10,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 106 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 03:58:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-11-29 03:58:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 71 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2023-11-29 03:58:10,321 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 12 [2023-11-29 03:58:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:10,321 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2023-11-29 03:58:10,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2023-11-29 03:58:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 03:58:10,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:10,322 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2023-11-29 03:58:10,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:10,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2016905739, now seen corresponding path program 2 times [2023-11-29 03:58:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423095683] [2023-11-29 03:58:10,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:58:10,524 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 [2023-11-29 03:58:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:10,525 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:10,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:10,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:58:10,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:10,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:58:10,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:10,640 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 13 treesize of output 7 [2023-11-29 03:58:10,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:10,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:10,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 03:58:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:10,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:11,614 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:11,615 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:11,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:11,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423095683] [2023-11-29 03:58:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423095683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:11,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:58:11,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709169931] [2023-11-29 03:58:11,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:11,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:58:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:11,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:58:11,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:58:11,699 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:15,017 INFO L93 Difference]: Finished difference Result 112 states and 143 transitions. [2023-11-29 03:58:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:58:15,018 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-29 03:58:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:15,018 INFO L225 Difference]: With dead ends: 112 [2023-11-29 03:58:15,019 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 03:58:15,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:58:15,020 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:15,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 148 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:58:15,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 03:58:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2023-11-29 03:58:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 95 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2023-11-29 03:58:15,026 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 14 [2023-11-29 03:58:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:15,026 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2023-11-29 03:58:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2023-11-29 03:58:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:58:15,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:15,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:15,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:15,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:15,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:15,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash -509374522, now seen corresponding path program 1 times [2023-11-29 03:58:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71939333] [2023-11-29 03:58:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:15,229 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 [2023-11-29 03:58:15,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:15,230 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:15,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 03:58:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:15,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:58:15,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:15,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:15,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:15,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71939333] [2023-11-29 03:58:15,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71939333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:15,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:15,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:58:15,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521288607] [2023-11-29 03:58:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:15,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:15,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:15,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:15,325 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:15,466 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2023-11-29 03:58:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:15,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 03:58:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:15,468 INFO L225 Difference]: With dead ends: 150 [2023-11-29 03:58:15,468 INFO L226 Difference]: Without dead ends: 150 [2023-11-29 03:58:15,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:15,469 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 65 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:15,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 94 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-29 03:58:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 113. [2023-11-29 03:58:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 112 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 149 transitions. [2023-11-29 03:58:15,473 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 149 transitions. Word has length 15 [2023-11-29 03:58:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:15,473 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 149 transitions. [2023-11-29 03:58:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 149 transitions. [2023-11-29 03:58:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:58:15,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:15,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:15,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 03:58:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:15,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -509373656, now seen corresponding path program 1 times [2023-11-29 03:58:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456354590] [2023-11-29 03:58:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:15,676 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 [2023-11-29 03:58:15,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:15,677 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:15,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 03:58:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:15,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:58:15,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:15,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:15,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456354590] [2023-11-29 03:58:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456354590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:15,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:15,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971895719] [2023-11-29 03:58:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:15,768 INFO L87 Difference]: Start difference. First operand 113 states and 149 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:15,847 INFO L93 Difference]: Finished difference Result 111 states and 147 transitions. [2023-11-29 03:58:15,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 03:58:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:15,848 INFO L225 Difference]: With dead ends: 111 [2023-11-29 03:58:15,848 INFO L226 Difference]: Without dead ends: 111 [2023-11-29 03:58:15,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:15,849 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:15,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-29 03:58:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-29 03:58:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 110 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 147 transitions. [2023-11-29 03:58:15,853 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 147 transitions. Word has length 15 [2023-11-29 03:58:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:15,853 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 147 transitions. [2023-11-29 03:58:15,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 147 transitions. [2023-11-29 03:58:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:58:15,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:15,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:15,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:16,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:16,054 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:16,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -509373655, now seen corresponding path program 1 times [2023-11-29 03:58:16,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:16,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44445654] [2023-11-29 03:58:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:16,055 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 [2023-11-29 03:58:16,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:16,056 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:16,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 03:58:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:16,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:16,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:16,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:16,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-29 03:58:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:16,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:16,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44445654] [2023-11-29 03:58:16,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44445654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:16,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:16,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 03:58:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054028623] [2023-11-29 03:58:16,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:16,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:58:16,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:58:16,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:16,439 INFO L87 Difference]: Start difference. First operand 111 states and 147 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:16,780 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2023-11-29 03:58:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:58:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 03:58:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:16,782 INFO L225 Difference]: With dead ends: 132 [2023-11-29 03:58:16,782 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 03:58:16,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:58:16,783 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:16,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 74 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:58:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 03:58:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2023-11-29 03:58:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 107 states have (on average 1.4485981308411215) internal successors, (155), 115 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2023-11-29 03:58:16,786 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 15 [2023-11-29 03:58:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:16,786 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2023-11-29 03:58:16,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2023-11-29 03:58:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 03:58:16,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:16,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:16,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 03:58:16,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:16,988 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:16,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1520491772, now seen corresponding path program 1 times [2023-11-29 03:58:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69723843] [2023-11-29 03:58:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:16,989 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 [2023-11-29 03:58:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:16,989 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:16,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 03:58:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:17,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:17,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:17,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:17,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69723843] [2023-11-29 03:58:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69723843] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:17,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:17,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-29 03:58:17,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751719032] [2023-11-29 03:58:17,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:17,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:58:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:17,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:58:17,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:58:17,247 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:17,509 INFO L93 Difference]: Finished difference Result 168 states and 218 transitions. [2023-11-29 03:58:17,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:58:17,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 03:58:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:17,511 INFO L225 Difference]: With dead ends: 168 [2023-11-29 03:58:17,511 INFO L226 Difference]: Without dead ends: 168 [2023-11-29 03:58:17,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:58:17,512 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 140 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:17,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 124 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-29 03:58:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 99. [2023-11-29 03:58:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.4666666666666666) internal successors, (132), 98 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 132 transitions. [2023-11-29 03:58:17,516 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 132 transitions. Word has length 15 [2023-11-29 03:58:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:17,517 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 132 transitions. [2023-11-29 03:58:17,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 132 transitions. [2023-11-29 03:58:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 03:58:17,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:17,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:17,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 03:58:17,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:17,718 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:17,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1389285891, now seen corresponding path program 1 times [2023-11-29 03:58:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664401598] [2023-11-29 03:58:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:17,719 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 [2023-11-29 03:58:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:17,720 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:17,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 03:58:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:17,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:58:17,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:17,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:17,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:17,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664401598] [2023-11-29 03:58:17,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664401598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:17,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715298059] [2023-11-29 03:58:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:17,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:17,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:17,813 INFO L87 Difference]: Start difference. First operand 99 states and 132 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:17,884 INFO L93 Difference]: Finished difference Result 98 states and 131 transitions. [2023-11-29 03:58:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 03:58:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:17,885 INFO L225 Difference]: With dead ends: 98 [2023-11-29 03:58:17,885 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 03:58:17,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:17,886 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:17,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 38 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 03:58:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-29 03:58:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 97 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2023-11-29 03:58:17,888 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 16 [2023-11-29 03:58:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:17,888 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2023-11-29 03:58:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2023-11-29 03:58:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 03:58:17,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:17,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:17,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 03:58:18,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:18,090 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:18,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1389285892, now seen corresponding path program 1 times [2023-11-29 03:58:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:18,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004208018] [2023-11-29 03:58:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:18,091 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 [2023-11-29 03:58:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:18,091 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:18,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 03:58:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:18,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:18,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:18,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:18,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-29 03:58:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:18,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:18,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004208018] [2023-11-29 03:58:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004208018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:18,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 03:58:18,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173147026] [2023-11-29 03:58:18,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:18,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:58:18,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:18,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:58:18,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:18,563 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:19,101 INFO L93 Difference]: Finished difference Result 118 states and 156 transitions. [2023-11-29 03:58:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:58:19,102 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-29 03:58:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:19,103 INFO L225 Difference]: With dead ends: 118 [2023-11-29 03:58:19,103 INFO L226 Difference]: Without dead ends: 118 [2023-11-29 03:58:19,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:58:19,103 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 135 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:19,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 96 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:58:19,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-29 03:58:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2023-11-29 03:58:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 100 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2023-11-29 03:58:19,106 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 16 [2023-11-29 03:58:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:19,106 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2023-11-29 03:58:19,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2023-11-29 03:58:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:58:19,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:19,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:19,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 03:58:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:19,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:19,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 118146942, now seen corresponding path program 1 times [2023-11-29 03:58:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416814919] [2023-11-29 03:58:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:19,309 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 [2023-11-29 03:58:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:19,310 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:19,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 03:58:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:19,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:19,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:19,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:19,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416814919] [2023-11-29 03:58:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416814919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:19,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:58:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823383868] [2023-11-29 03:58:19,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:19,423 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:19,534 INFO L93 Difference]: Finished difference Result 129 states and 167 transitions. [2023-11-29 03:58:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:58:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:19,536 INFO L225 Difference]: With dead ends: 129 [2023-11-29 03:58:19,536 INFO L226 Difference]: Without dead ends: 129 [2023-11-29 03:58:19,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:19,536 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:19,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-29 03:58:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2023-11-29 03:58:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 117 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2023-11-29 03:58:19,539 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 17 [2023-11-29 03:58:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:19,539 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2023-11-29 03:58:19,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2023-11-29 03:58:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:58:19,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:19,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:19,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 03:58:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:19,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:19,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1161716736, now seen corresponding path program 1 times [2023-11-29 03:58:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:19,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209772822] [2023-11-29 03:58:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:19,742 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 [2023-11-29 03:58:19,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:19,742 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:19,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 03:58:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:19,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:58:19,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:19,827 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 11 treesize of output 7 [2023-11-29 03:58:19,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:19,832 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 1 [2023-11-29 03:58:19,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:19,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:58:19,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:19,843 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 1 [2023-11-29 03:58:19,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:19,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2023-11-29 03:58:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:19,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:58:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:19,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:19,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209772822] [2023-11-29 03:58:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209772822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:19,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481281364] [2023-11-29 03:58:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:58:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:58:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:58:19,889 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:19,943 INFO L93 Difference]: Finished difference Result 117 states and 159 transitions. [2023-11-29 03:58:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:58:19,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:58:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:19,944 INFO L225 Difference]: With dead ends: 117 [2023-11-29 03:58:19,944 INFO L226 Difference]: Without dead ends: 117 [2023-11-29 03:58:19,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:19,945 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:19,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:58:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-29 03:58:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-11-29 03:58:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 110 states have (on average 1.4454545454545455) internal successors, (159), 116 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2023-11-29 03:58:19,947 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 17 [2023-11-29 03:58:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:19,948 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2023-11-29 03:58:19,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2023-11-29 03:58:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:58:19,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:19,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:19,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:20,149 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:20,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1161716735, now seen corresponding path program 1 times [2023-11-29 03:58:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009240518] [2023-11-29 03:58:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:20,150 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 [2023-11-29 03:58:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:20,151 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 03:58:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:20,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:58:20,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:20,264 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 [2023-11-29 03:58:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:20,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:58:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:20,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:58:20,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:20,291 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 1 [2023-11-29 03:58:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:20,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2023-11-29 03:58:20,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:20,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 03:58:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:20,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:20,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009240518] [2023-11-29 03:58:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009240518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:20,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:20,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:58:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132281213] [2023-11-29 03:58:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:20,391 INFO L87 Difference]: Start difference. First operand 117 states and 159 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:20,597 INFO L93 Difference]: Finished difference Result 209 states and 283 transitions. [2023-11-29 03:58:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:58:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:20,599 INFO L225 Difference]: With dead ends: 209 [2023-11-29 03:58:20,599 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 03:58:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:20,600 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 96 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 91 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 03:58:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 167. [2023-11-29 03:58:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 160 states have (on average 1.44375) internal successors, (231), 166 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 231 transitions. [2023-11-29 03:58:20,604 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 231 transitions. Word has length 17 [2023-11-29 03:58:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:20,604 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 231 transitions. [2023-11-29 03:58:20,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 231 transitions. [2023-11-29 03:58:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:58:20,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:20,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:20,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 03:58:20,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:20,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:20,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2112182207, now seen corresponding path program 1 times [2023-11-29 03:58:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313109558] [2023-11-29 03:58:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:20,807 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 [2023-11-29 03:58:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:20,808 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:20,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 03:58:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:20,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:58:20,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:20,904 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 8 treesize of output 7 [2023-11-29 03:58:20,917 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 13 treesize of output 7 [2023-11-29 03:58:20,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 03:58:20,949 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 13 treesize of output 7 [2023-11-29 03:58:20,961 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 8 treesize of output 7 [2023-11-29 03:58:20,971 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 13 treesize of output 7 [2023-11-29 03:58:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:21,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:21,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313109558] [2023-11-29 03:58:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313109558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:58:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264004016] [2023-11-29 03:58:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:58:21,196 INFO L87 Difference]: Start difference. First operand 167 states and 231 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:21,444 INFO L93 Difference]: Finished difference Result 201 states and 279 transitions. [2023-11-29 03:58:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 03:58:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:21,446 INFO L225 Difference]: With dead ends: 201 [2023-11-29 03:58:21,446 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 03:58:21,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:58:21,447 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 98 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:21,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 39 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 03:58:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 147. [2023-11-29 03:58:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 140 states have (on average 1.4714285714285715) internal successors, (206), 146 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 206 transitions. [2023-11-29 03:58:21,451 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 206 transitions. Word has length 17 [2023-11-29 03:58:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:21,452 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 206 transitions. [2023-11-29 03:58:21,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 206 transitions. [2023-11-29 03:58:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 03:58:21,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:21,453 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:21,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:21,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:21,653 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:21,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1256882531, now seen corresponding path program 2 times [2023-11-29 03:58:21,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:21,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997348560] [2023-11-29 03:58:21,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:58:21,654 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 [2023-11-29 03:58:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:21,655 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:21,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 03:58:21,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:58:21,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:21,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:58:21,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:21,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:21,772 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 13 treesize of output 7 [2023-11-29 03:58:21,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 03:58:21,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:21,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:21,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:58:21,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:21,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:21,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 03:58:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:22,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:22,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:22,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997348560] [2023-11-29 03:58:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997348560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:22,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 03:58:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017002869] [2023-11-29 03:58:22,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:22,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:58:22,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:58:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:58:22,982 INFO L87 Difference]: Start difference. First operand 147 states and 206 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:28,380 INFO L93 Difference]: Finished difference Result 166 states and 231 transitions. [2023-11-29 03:58:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:58:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-29 03:58:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:28,382 INFO L225 Difference]: With dead ends: 166 [2023-11-29 03:58:28,383 INFO L226 Difference]: Without dead ends: 166 [2023-11-29 03:58:28,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=365, Invalid=691, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:58:28,384 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 132 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:28,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 131 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:58:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-29 03:58:28,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 159. [2023-11-29 03:58:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 152 states have (on average 1.4736842105263157) internal successors, (224), 158 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 224 transitions. [2023-11-29 03:58:28,389 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 224 transitions. Word has length 18 [2023-11-29 03:58:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 224 transitions. [2023-11-29 03:58:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 224 transitions. [2023-11-29 03:58:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:58:28,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:28,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:28,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 03:58:28,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:28,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:28,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 290293855, now seen corresponding path program 1 times [2023-11-29 03:58:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895788982] [2023-11-29 03:58:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:28,591 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 [2023-11-29 03:58:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:28,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:28,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 03:58:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:28,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:58:28,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:28,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:28,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895788982] [2023-11-29 03:58:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895788982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:28,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628588416] [2023-11-29 03:58:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:58:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:58:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:28,676 INFO L87 Difference]: Start difference. First operand 159 states and 224 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:28,711 INFO L93 Difference]: Finished difference Result 169 states and 235 transitions. [2023-11-29 03:58:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:58:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 03:58:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:28,713 INFO L225 Difference]: With dead ends: 169 [2023-11-29 03:58:28,713 INFO L226 Difference]: Without dead ends: 169 [2023-11-29 03:58:28,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:58:28,714 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:28,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:58:28,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-29 03:58:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2023-11-29 03:58:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 157 states have (on average 1.4522292993630572) internal successors, (228), 163 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2023-11-29 03:58:28,718 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 19 [2023-11-29 03:58:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:28,718 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2023-11-29 03:58:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2023-11-29 03:58:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:58:28,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:28,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:28,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:28,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:28,919 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:28,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash -883463556, now seen corresponding path program 1 times [2023-11-29 03:58:28,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:28,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047895377] [2023-11-29 03:58:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:28,920 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 [2023-11-29 03:58:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:28,921 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:28,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 03:58:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:29,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:29,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:29,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:29,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047895377] [2023-11-29 03:58:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047895377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:29,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 03:58:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200117370] [2023-11-29 03:58:29,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:29,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:58:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:58:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:29,128 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:29,329 INFO L93 Difference]: Finished difference Result 172 states and 228 transitions. [2023-11-29 03:58:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:58:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-29 03:58:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:29,330 INFO L225 Difference]: With dead ends: 172 [2023-11-29 03:58:29,330 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 03:58:29,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:58:29,331 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:29,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 206 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 03:58:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 160. [2023-11-29 03:58:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 153 states have (on average 1.4379084967320261) internal successors, (220), 159 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2023-11-29 03:58:29,335 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 20 [2023-11-29 03:58:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:29,335 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2023-11-29 03:58:29,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2023-11-29 03:58:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 03:58:29,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:29,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:29,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 03:58:29,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:29,536 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:29,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:29,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1417359034, now seen corresponding path program 1 times [2023-11-29 03:58:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650676557] [2023-11-29 03:58:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:29,537 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 [2023-11-29 03:58:29,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:29,538 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:29,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 03:58:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:29,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:58:29,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:29,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:29,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:29,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650676557] [2023-11-29 03:58:29,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650676557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:29,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:29,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-11-29 03:58:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983041881] [2023-11-29 03:58:29,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:29,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:58:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:58:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:58:29,882 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:30,231 INFO L93 Difference]: Finished difference Result 212 states and 284 transitions. [2023-11-29 03:58:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:58:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-29 03:58:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:30,233 INFO L225 Difference]: With dead ends: 212 [2023-11-29 03:58:30,233 INFO L226 Difference]: Without dead ends: 212 [2023-11-29 03:58:30,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:58:30,234 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 103 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:30,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 244 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-29 03:58:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2023-11-29 03:58:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.446236559139785) internal successors, (269), 192 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 269 transitions. [2023-11-29 03:58:30,238 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 269 transitions. Word has length 20 [2023-11-29 03:58:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:30,238 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 269 transitions. [2023-11-29 03:58:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 269 transitions. [2023-11-29 03:58:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 03:58:30,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:30,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:30,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 03:58:30,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:30,439 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:30,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:30,440 INFO L85 PathProgramCache]: Analyzing trace with hash 165340398, now seen corresponding path program 1 times [2023-11-29 03:58:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316872916] [2023-11-29 03:58:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:30,440 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 [2023-11-29 03:58:30,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:30,441 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:30,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 03:58:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:30,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:58:30,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:30,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:30,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:30,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316872916] [2023-11-29 03:58:30,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316872916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:30,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:30,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-29 03:58:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087213190] [2023-11-29 03:58:30,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:58:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:58:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:58:30,726 INFO L87 Difference]: Start difference. First operand 193 states and 269 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:31,013 INFO L93 Difference]: Finished difference Result 200 states and 267 transitions. [2023-11-29 03:58:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:58:31,014 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 03:58:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:31,015 INFO L225 Difference]: With dead ends: 200 [2023-11-29 03:58:31,015 INFO L226 Difference]: Without dead ends: 200 [2023-11-29 03:58:31,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:58:31,016 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 162 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:31,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 113 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-29 03:58:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 155. [2023-11-29 03:58:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 149 states have (on average 1.4161073825503356) internal successors, (211), 154 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 211 transitions. [2023-11-29 03:58:31,019 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 211 transitions. Word has length 21 [2023-11-29 03:58:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 211 transitions. [2023-11-29 03:58:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 211 transitions. [2023-11-29 03:58:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 03:58:31,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:31,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:31,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 03:58:31,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:31,221 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:31,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1386661216, now seen corresponding path program 2 times [2023-11-29 03:58:31,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521681891] [2023-11-29 03:58:31,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:58:31,222 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 [2023-11-29 03:58:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:31,223 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:31,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 03:58:31,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:58:31,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:31,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:58:31,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:31,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:31,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-11-29 03:58:32,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:58:32,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521681891] [2023-11-29 03:58:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521681891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:32,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 03:58:32,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235422858] [2023-11-29 03:58:32,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:32,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:58:32,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:32,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:58:32,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:58:32,030 INFO L87 Difference]: Start difference. First operand 155 states and 211 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:33,065 INFO L93 Difference]: Finished difference Result 219 states and 286 transitions. [2023-11-29 03:58:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:58:33,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-29 03:58:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:33,068 INFO L225 Difference]: With dead ends: 219 [2023-11-29 03:58:33,068 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 03:58:33,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:58:33,069 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 256 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:33,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 204 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:58:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 03:58:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2023-11-29 03:58:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 159 states have (on average 1.4276729559748427) internal successors, (227), 164 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2023-11-29 03:58:33,077 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 227 transitions. Word has length 22 [2023-11-29 03:58:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:33,078 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 227 transitions. [2023-11-29 03:58:33,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 227 transitions. [2023-11-29 03:58:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 03:58:33,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:33,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:33,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 03:58:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:33,279 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:33,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:33,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1510716829, now seen corresponding path program 1 times [2023-11-29 03:58:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247329059] [2023-11-29 03:58:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:33,280 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 [2023-11-29 03:58:33,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:33,281 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:33,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 03:58:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:33,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:58:33,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:36,352 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ bv0 1))))) (exists ((|v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ BitVec 32))) (and (exists ((|v_ULTIMATE.start_main_#t~malloc11#1.base_22| (_ BitVec 32))) (and (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_22| (_ BitVec 32))) (and (exists ((v_DerPreprocessor_5 (_ BitVec 1)) (v_DerPreprocessor_4 (_ BitVec 1)) (v_DerPreprocessor_3 (_ BitVec 1))) (let ((.cse1 (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| v_DerPreprocessor_3) |v_ULTIMATE.start_main_#t~malloc11#1.base_22| v_DerPreprocessor_4) |v_ULTIMATE.start_main_#t~malloc12#1.base_22| v_DerPreprocessor_5))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| (select .cse1 |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)))) (and (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_#t~malloc11#1.base_22|)) (= (_ bv0 1) (select (store .cse0 |v_ULTIMATE.start_main_#t~malloc11#1.base_22| (select .cse1 |v_ULTIMATE.start_main_#t~malloc11#1.base_22|)) |v_ULTIMATE.start_main_#t~malloc12#1.base_22|)))))) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_main_#t~malloc11#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_main_#t~malloc12#1.base_22| (_ bv0 1))) (not (= |v_ULTIMATE.start_main_#t~malloc11#1.base_22| |v_ULTIMATE.start_main_#t~malloc12#1.base_22|)) (not (= |v_ULTIMATE.start_main_#t~malloc12#1.base_22| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)))) (not (= |v_ULTIMATE.start_main_#t~malloc11#1.base_22| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)))) (exists ((|v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)) (exists ((|v_ULTIMATE.start_main_#t~malloc11#1.base_22| (_ BitVec 32))) (and (not (= |v_ULTIMATE.start_main_#t~malloc11#1.base_22| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)) (exists ((|v_ULTIMATE.start_main_#t~malloc12#1.base_22| (_ BitVec 32))) (and (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_main_#t~malloc11#1.base_22| (_ bv0 1)) |v_ULTIMATE.start_main_#t~malloc12#1.base_22| (_ bv0 1))) (exists ((v_ArrVal_496 (_ BitVec 1)) (v_DerPreprocessor_1 (_ BitVec 1)) (v_DerPreprocessor_2 (_ BitVec 1))) (let ((.cse2 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc10#1.base_22| v_DerPreprocessor_1) |v_ULTIMATE.start_main_#t~malloc12#1.base_22| v_DerPreprocessor_2) |v_ULTIMATE.start_main_#t~malloc10#1.base_22|)))) (and (= (_ bv0 1) (select .cse2 |v_ULTIMATE.start_main_#t~malloc11#1.base_22|)) (= (select (store .cse2 |v_ULTIMATE.start_main_#t~malloc11#1.base_22| v_ArrVal_496) |v_ULTIMATE.start_main_#t~malloc12#1.base_22|) (_ bv0 1))))) (not (= |v_ULTIMATE.start_main_#t~malloc12#1.base_22| |v_ULTIMATE.start_main_#t~malloc10#1.base_22|))))))))) is different from true [2023-11-29 03:58:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:58:36,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:58:36,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247329059] [2023-11-29 03:58:36,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247329059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:58:36,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:58:36,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:58:36,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654187221] [2023-11-29 03:58:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:58:36,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:58:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:58:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 03:58:36,356 INFO L87 Difference]: Start difference. First operand 165 states and 227 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:36,576 INFO L93 Difference]: Finished difference Result 164 states and 226 transitions. [2023-11-29 03:58:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 03:58:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:36,578 INFO L225 Difference]: With dead ends: 164 [2023-11-29 03:58:36,578 INFO L226 Difference]: Without dead ends: 162 [2023-11-29 03:58:36,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 03:58:36,579 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:36,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 48 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2023-11-29 03:58:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-29 03:58:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-29 03:58:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.4076433121019107) internal successors, (221), 161 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2023-11-29 03:58:36,585 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 23 [2023-11-29 03:58:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:36,585 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2023-11-29 03:58:36,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2023-11-29 03:58:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 03:58:36,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:36,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:36,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 03:58:36,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:36,787 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:36,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1510715962, now seen corresponding path program 1 times [2023-11-29 03:58:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469951294] [2023-11-29 03:58:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:36,787 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 [2023-11-29 03:58:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:36,788 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:36,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 03:58:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:36,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:58:36,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:58:36,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:58:36,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469951294] [2023-11-29 03:58:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469951294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:36,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:37,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 03:58:37,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450392310] [2023-11-29 03:58:37,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:58:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:37,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:58:37,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:58:37,001 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:37,135 INFO L93 Difference]: Finished difference Result 230 states and 305 transitions. [2023-11-29 03:58:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:58:37,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 03:58:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:37,137 INFO L225 Difference]: With dead ends: 230 [2023-11-29 03:58:37,137 INFO L226 Difference]: Without dead ends: 198 [2023-11-29 03:58:37,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:58:37,138 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 123 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:58:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-29 03:58:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2023-11-29 03:58:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.402116402116402) internal successors, (265), 193 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:37,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 265 transitions. [2023-11-29 03:58:37,144 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 265 transitions. Word has length 23 [2023-11-29 03:58:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:37,144 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 265 transitions. [2023-11-29 03:58:37,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 265 transitions. [2023-11-29 03:58:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 03:58:37,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:37,145 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:37,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-29 03:58:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:37,346 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:37,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1291861244, now seen corresponding path program 1 times [2023-11-29 03:58:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:37,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321762707] [2023-11-29 03:58:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:58:37,346 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 [2023-11-29 03:58:37,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:37,347 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:37,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 03:58:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:58:37,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:58:37,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:37,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:37,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:37,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321762707] [2023-11-29 03:58:37,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321762707] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:37,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-29 03:58:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809604284] [2023-11-29 03:58:37,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:37,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:58:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:58:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:58:37,709 INFO L87 Difference]: Start difference. First operand 194 states and 265 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:37,996 INFO L93 Difference]: Finished difference Result 262 states and 349 transitions. [2023-11-29 03:58:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:58:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 03:58:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:37,998 INFO L225 Difference]: With dead ends: 262 [2023-11-29 03:58:37,998 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 03:58:37,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:58:37,999 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:37,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 151 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:58:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 03:58:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 194. [2023-11-29 03:58:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.3968253968253967) internal successors, (264), 193 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2023-11-29 03:58:38,003 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 23 [2023-11-29 03:58:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:38,003 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2023-11-29 03:58:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2023-11-29 03:58:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 03:58:38,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:38,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:38,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 03:58:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:38,204 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:38,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1144700534, now seen corresponding path program 2 times [2023-11-29 03:58:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236231624] [2023-11-29 03:58:38,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:58:38,205 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 [2023-11-29 03:58:38,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:38,206 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:38,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 03:58:38,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:58:38,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:38,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:58:38,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:38,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:38,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2023-11-29 03:58:38,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:58:38,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:38,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236231624] [2023-11-29 03:58:38,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236231624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:38,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:38,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 03:58:38,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981862520] [2023-11-29 03:58:38,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:38,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:58:38,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:58:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:58:38,932 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:39,648 INFO L93 Difference]: Finished difference Result 300 states and 400 transitions. [2023-11-29 03:58:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 03:58:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 03:58:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:39,650 INFO L225 Difference]: With dead ends: 300 [2023-11-29 03:58:39,650 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 03:58:39,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:58:39,651 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 136 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:39,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 180 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:58:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 03:58:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 231. [2023-11-29 03:58:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.3805309734513274) internal successors, (312), 230 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 312 transitions. [2023-11-29 03:58:39,656 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 312 transitions. Word has length 25 [2023-11-29 03:58:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:39,656 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 312 transitions. [2023-11-29 03:58:39,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 312 transitions. [2023-11-29 03:58:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:58:39,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:39,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:58:39,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-11-29 03:58:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:39,860 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:39,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1828444904, now seen corresponding path program 3 times [2023-11-29 03:58:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891366353] [2023-11-29 03:58:39,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:58:39,861 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 [2023-11-29 03:58:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:39,862 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 03:58:39,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:58:39,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:39,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 03:58:39,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 03:58:40,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,027 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 10 treesize of output 8 [2023-11-29 03:58:40,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:58:40,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:40,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:58:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:58:40,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:41,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 03:58:41,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891366353] [2023-11-29 03:58:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891366353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:41,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:41,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 03:58:41,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412314593] [2023-11-29 03:58:41,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:41,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:58:41,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:41,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:58:41,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:58:41,614 INFO L87 Difference]: Start difference. First operand 231 states and 312 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:58:44,279 INFO L93 Difference]: Finished difference Result 492 states and 629 transitions. [2023-11-29 03:58:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:58:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-29 03:58:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:58:44,282 INFO L225 Difference]: With dead ends: 492 [2023-11-29 03:58:44,282 INFO L226 Difference]: Without dead ends: 492 [2023-11-29 03:58:44,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:58:44,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 569 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:58:44,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 112 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:58:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-29 03:58:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 307. [2023-11-29 03:58:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 302 states have (on average 1.4172185430463575) internal successors, (428), 306 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 428 transitions. [2023-11-29 03:58:44,293 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 428 transitions. Word has length 26 [2023-11-29 03:58:44,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:58:44,294 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 428 transitions. [2023-11-29 03:58:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:58:44,294 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 428 transitions. [2023-11-29 03:58:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 03:58:44,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:58:44,294 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1] [2023-11-29 03:58:44,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 03:58:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:58:44,495 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:58:44,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:58:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2021071079, now seen corresponding path program 3 times [2023-11-29 03:58:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:58:44,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465092259] [2023-11-29 03:58:44,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:58:44,496 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 [2023-11-29 03:58:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:58:44,497 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:58:44,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 03:58:44,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 03:58:44,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:58:44,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:58:44,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:58:44,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:44,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:44,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 03:58:44,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:58:44,830 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 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 03:58:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:45,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:58:48,020 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:48,021 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:58:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:58:48,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:58:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465092259] [2023-11-29 03:58:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465092259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:58:48,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:58:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 03:58:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234478751] [2023-11-29 03:58:48,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:58:48,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:58:48,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:58:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:58:48,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:58:48,178 INFO L87 Difference]: Start difference. First operand 307 states and 428 transitions. Second operand has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:59:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:59:13,904 INFO L93 Difference]: Finished difference Result 393 states and 538 transitions. [2023-11-29 03:59:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 03:59:13,905 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-29 03:59:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:59:13,906 INFO L225 Difference]: With dead ends: 393 [2023-11-29 03:59:13,906 INFO L226 Difference]: Without dead ends: 393 [2023-11-29 03:59:13,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=1131, Invalid=2409, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:59:13,908 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 210 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:59:13,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 212 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 03:59:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-29 03:59:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 355. [2023-11-29 03:59:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.4285714285714286) internal successors, (500), 354 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:59:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 500 transitions. [2023-11-29 03:59:13,914 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 500 transitions. Word has length 26 [2023-11-29 03:59:13,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:59:13,914 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 500 transitions. [2023-11-29 03:59:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:59:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 500 transitions. [2023-11-29 03:59:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 03:59:13,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:59:13,915 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:59:13,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 03:59:14,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:59:14,115 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 03:59:14,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:59:14,116 INFO L85 PathProgramCache]: Analyzing trace with hash 8747137, now seen corresponding path program 3 times [2023-11-29 03:59:14,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 03:59:14,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323435072] [2023-11-29 03:59:14,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:59:14,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 03:59:14,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 03:59:14,117 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 03:59:14,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 03:59:14,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 03:59:14,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:59:14,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:59:14,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:59:14,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:59:14,417 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 13 treesize of output 7 [2023-11-29 03:59:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:59:14,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:59:14,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 03:59:14,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:59:14,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 03:59:14,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 03:59:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:59:15,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:59:17,778 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 03:59:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:59:17,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 03:59:17,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323435072] [2023-11-29 03:59:17,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323435072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:59:17,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:59:17,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2023-11-29 03:59:17,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871931509] [2023-11-29 03:59:17,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:59:17,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:59:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 03:59:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:59:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:59:17,947 INFO L87 Difference]: Start difference. First operand 355 states and 500 transitions. Second operand has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:34,744 INFO L93 Difference]: Finished difference Result 441 states and 610 transitions. [2023-11-29 04:00:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 04:00:34,745 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-29 04:00:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:34,747 INFO L225 Difference]: With dead ends: 441 [2023-11-29 04:00:34,748 INFO L226 Difference]: Without dead ends: 441 [2023-11-29 04:00:34,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 942 ImplicationChecksByTransitivity, 76.8s TimeCoverageRelationStatistics Valid=1304, Invalid=2728, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 04:00:34,749 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 214 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:34,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 155 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 04:00:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-29 04:00:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 403. [2023-11-29 04:00:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 398 states have (on average 1.4371859296482412) internal successors, (572), 402 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 572 transitions. [2023-11-29 04:00:34,755 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 572 transitions. Word has length 30 [2023-11-29 04:00:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:34,755 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 572 transitions. [2023-11-29 04:00:34,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 572 transitions. [2023-11-29 04:00:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:00:34,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:34,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:34,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 04:00:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:34,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:34,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1733449593, now seen corresponding path program 1 times [2023-11-29 04:00:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:34,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255620616] [2023-11-29 04:00:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:00:34,957 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 [2023-11-29 04:00:34,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:34,958 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:34,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 04:00:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:00:35,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:00:35,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:35,123 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 13 treesize of output 7 [2023-11-29 04:00:35,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:35,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 04:00:35,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:35,151 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 8 treesize of output 1 [2023-11-29 04:00:35,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:35,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:00:35,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:35,167 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 8 treesize of output 1 [2023-11-29 04:00:35,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:35,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:00:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:00:35,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:00:36,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:36,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255620616] [2023-11-29 04:00:36,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255620616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:36,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:36,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 04:00:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755256308] [2023-11-29 04:00:36,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:36,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:00:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:00:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:00:36,325 INFO L87 Difference]: Start difference. First operand 403 states and 572 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:37,122 INFO L93 Difference]: Finished difference Result 462 states and 650 transitions. [2023-11-29 04:00:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:00:37,123 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 04:00:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:37,125 INFO L225 Difference]: With dead ends: 462 [2023-11-29 04:00:37,125 INFO L226 Difference]: Without dead ends: 462 [2023-11-29 04:00:37,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:00:37,126 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 162 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:37,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 157 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:00:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-29 04:00:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 456. [2023-11-29 04:00:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 451 states have (on average 1.441241685144124) internal successors, (650), 455 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 650 transitions. [2023-11-29 04:00:37,135 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 650 transitions. Word has length 33 [2023-11-29 04:00:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:37,136 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 650 transitions. [2023-11-29 04:00:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 650 transitions. [2023-11-29 04:00:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:00:37,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:37,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:37,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 04:00:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:37,337 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:37,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2139747545, now seen corresponding path program 3 times [2023-11-29 04:00:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:37,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928072721] [2023-11-29 04:00:37,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:00:37,338 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 [2023-11-29 04:00:37,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:37,339 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:37,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 04:00:37,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 04:00:37,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:37,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:00:37,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:37,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:37,605 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 13 treesize of output 7 [2023-11-29 04:00:37,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:00:37,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:37,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:37,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:37,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 04:00:38,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:00:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:00:38,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:00:39,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:39,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928072721] [2023-11-29 04:00:39,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928072721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:39,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:39,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2023-11-29 04:00:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852382377] [2023-11-29 04:00:39,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:39,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:00:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:39,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:00:39,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:00:39,235 INFO L87 Difference]: Start difference. First operand 456 states and 650 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:40,914 INFO L93 Difference]: Finished difference Result 677 states and 952 transitions. [2023-11-29 04:00:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:00:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-11-29 04:00:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:40,917 INFO L225 Difference]: With dead ends: 677 [2023-11-29 04:00:40,917 INFO L226 Difference]: Without dead ends: 617 [2023-11-29 04:00:40,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:00:40,918 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 183 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:40,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 247 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:00:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-29 04:00:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 543. [2023-11-29 04:00:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 538 states have (on average 1.446096654275093) internal successors, (778), 542 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 778 transitions. [2023-11-29 04:00:40,926 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 778 transitions. Word has length 33 [2023-11-29 04:00:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:40,926 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 778 transitions. [2023-11-29 04:00:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 778 transitions. [2023-11-29 04:00:40,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 04:00:40,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:40,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:40,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-11-29 04:00:41,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:41,128 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:41,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:41,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1767138771, now seen corresponding path program 4 times [2023-11-29 04:00:41,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:41,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262008796] [2023-11-29 04:00:41,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:00:41,129 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 [2023-11-29 04:00:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:41,130 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:41,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 04:00:41,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:00:41,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:41,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:00:41,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:00:41,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:42,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-29 04:00:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:00:42,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:42,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262008796] [2023-11-29 04:00:42,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262008796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:42,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:42,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 04:00:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519230654] [2023-11-29 04:00:42,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:00:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:00:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:00:42,708 INFO L87 Difference]: Start difference. First operand 543 states and 778 transitions. Second operand has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:44,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:44,125 INFO L93 Difference]: Finished difference Result 813 states and 1159 transitions. [2023-11-29 04:00:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:00:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-29 04:00:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:44,128 INFO L225 Difference]: With dead ends: 813 [2023-11-29 04:00:44,128 INFO L226 Difference]: Without dead ends: 813 [2023-11-29 04:00:44,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:00:44,129 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 116 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:44,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 260 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:00:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2023-11-29 04:00:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 651. [2023-11-29 04:00:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 646 states have (on average 1.4427244582043344) internal successors, (932), 650 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 932 transitions. [2023-11-29 04:00:44,145 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 932 transitions. Word has length 35 [2023-11-29 04:00:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:44,145 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 932 transitions. [2023-11-29 04:00:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 932 transitions. [2023-11-29 04:00:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:00:44,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:44,146 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:44,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-11-29 04:00:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:44,347 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:44,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -751307016, now seen corresponding path program 4 times [2023-11-29 04:00:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806397532] [2023-11-29 04:00:44,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:00:44,348 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 [2023-11-29 04:00:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:44,349 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:44,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 04:00:44,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:00:44,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:44,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:00:44,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 42 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:00:44,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 42 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:00:45,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:45,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806397532] [2023-11-29 04:00:45,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806397532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:45,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:45,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-11-29 04:00:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671532720] [2023-11-29 04:00:45,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:00:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:00:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:00:45,126 INFO L87 Difference]: Start difference. First operand 651 states and 932 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:46,863 INFO L93 Difference]: Finished difference Result 1297 states and 1740 transitions. [2023-11-29 04:00:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:00:46,864 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-11-29 04:00:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:46,868 INFO L225 Difference]: With dead ends: 1297 [2023-11-29 04:00:46,868 INFO L226 Difference]: Without dead ends: 1183 [2023-11-29 04:00:46,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:00:46,869 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 304 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:46,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 431 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:00:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2023-11-29 04:00:46,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 939. [2023-11-29 04:00:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 934 states have (on average 1.423982869379015) internal successors, (1330), 938 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1330 transitions. [2023-11-29 04:00:46,887 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1330 transitions. Word has length 42 [2023-11-29 04:00:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:46,887 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1330 transitions. [2023-11-29 04:00:46,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 23 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1330 transitions. [2023-11-29 04:00:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 04:00:46,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:46,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:46,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-11-29 04:00:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:47,089 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:47,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash 51843274, now seen corresponding path program 5 times [2023-11-29 04:00:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841105615] [2023-11-29 04:00:47,090 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:00:47,091 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 [2023-11-29 04:00:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:47,092 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:47,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 04:00:47,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 04:00:47,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:47,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:00:47,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:00:47,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:00:48,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841105615] [2023-11-29 04:00:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841105615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:48,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-29 04:00:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111048869] [2023-11-29 04:00:48,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:48,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 04:00:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 04:00:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:00:48,244 INFO L87 Difference]: Start difference. First operand 939 states and 1330 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:48,948 INFO L93 Difference]: Finished difference Result 1617 states and 2271 transitions. [2023-11-29 04:00:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:00:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-29 04:00:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:48,956 INFO L225 Difference]: With dead ends: 1617 [2023-11-29 04:00:48,956 INFO L226 Difference]: Without dead ends: 1417 [2023-11-29 04:00:48,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:00:48,957 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 244 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:48,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 389 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:00:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2023-11-29 04:00:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1226. [2023-11-29 04:00:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1221 states have (on average 1.416871416871417) internal successors, (1730), 1225 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1730 transitions. [2023-11-29 04:00:48,983 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1730 transitions. Word has length 43 [2023-11-29 04:00:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:48,983 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 1730 transitions. [2023-11-29 04:00:48,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1730 transitions. [2023-11-29 04:00:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:00:48,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:48,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:48,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-29 04:00:49,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:49,186 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:49,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash 531880493, now seen corresponding path program 2 times [2023-11-29 04:00:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:49,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152604394] [2023-11-29 04:00:49,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:00:49,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:49,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:49,188 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:49,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-11-29 04:00:49,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:00:49,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:49,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:00:49,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:49,375 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 8 treesize of output 7 [2023-11-29 04:00:49,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:49,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:00:49,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:49,392 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 8 treesize of output 1 [2023-11-29 04:00:49,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:49,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:00:49,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:49,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:00:49,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:49,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 04:00:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:00:50,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:00:51,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152604394] [2023-11-29 04:00:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152604394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:51,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 04:00:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672818425] [2023-11-29 04:00:51,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:51,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:00:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:00:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:00:51,522 INFO L87 Difference]: Start difference. First operand 1226 states and 1730 transitions. Second operand has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:52,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:52,831 INFO L93 Difference]: Finished difference Result 1429 states and 2003 transitions. [2023-11-29 04:00:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:00:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 04:00:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:52,836 INFO L225 Difference]: With dead ends: 1429 [2023-11-29 04:00:52,836 INFO L226 Difference]: Without dead ends: 1298 [2023-11-29 04:00:52,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:00:52,837 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 210 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:52,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 270 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:00:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-29 04:00:52,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1125. [2023-11-29 04:00:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1120 states have (on average 1.4276785714285714) internal successors, (1599), 1124 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1599 transitions. [2023-11-29 04:00:52,859 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1599 transitions. Word has length 45 [2023-11-29 04:00:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:52,860 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1599 transitions. [2023-11-29 04:00:52,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.684210526315789) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1599 transitions. [2023-11-29 04:00:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:00:52,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:52,862 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:52,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-11-29 04:00:53,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:53,062 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:53,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -666759088, now seen corresponding path program 6 times [2023-11-29 04:00:53,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475626452] [2023-11-29 04:00:53,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:00:53,063 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 [2023-11-29 04:00:53,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:53,064 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:53,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 04:00:53,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 04:00:53,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:53,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 04:00:53,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:53,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 04:00:53,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:00:53,230 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 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 04:00:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:00:53,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:00:55,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:00:55,102 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:00:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:00:55,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:00:55,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475626452] [2023-11-29 04:00:55,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475626452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:00:55,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:00:55,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 04:00:55,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775895576] [2023-11-29 04:00:55,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:00:55,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:00:55,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:00:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:00:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:00:55,159 INFO L87 Difference]: Start difference. First operand 1125 states and 1599 transitions. Second operand has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:00:58,472 INFO L93 Difference]: Finished difference Result 3128 states and 4420 transitions. [2023-11-29 04:00:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:00:58,473 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-29 04:00:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:00:58,484 INFO L225 Difference]: With dead ends: 3128 [2023-11-29 04:00:58,484 INFO L226 Difference]: Without dead ends: 3128 [2023-11-29 04:00:58,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:00:58,485 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 379 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:00:58,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 179 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:00:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2023-11-29 04:00:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 2942. [2023-11-29 04:00:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2937 states have (on average 1.4337759618658494) internal successors, (4211), 2941 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4211 transitions. [2023-11-29 04:00:58,523 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4211 transitions. Word has length 45 [2023-11-29 04:00:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:00:58,523 INFO L495 AbstractCegarLoop]: Abstraction has 2942 states and 4211 transitions. [2023-11-29 04:00:58,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:00:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4211 transitions. [2023-11-29 04:00:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:00:58,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:00:58,524 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:00:58,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-29 04:00:58,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:00:58,725 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:00:58,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:00:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1422326614, now seen corresponding path program 5 times [2023-11-29 04:00:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:00:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523271325] [2023-11-29 04:00:58,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:00:58,726 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 [2023-11-29 04:00:58,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:00:58,727 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:00:58,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-11-29 04:00:59,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-29 04:00:59,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:00:59,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:00:59,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:00:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:00:59,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:01:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:01:00,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:01:00,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523271325] [2023-11-29 04:01:00,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523271325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:01:00,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:01:00,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2023-11-29 04:01:00,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561846207] [2023-11-29 04:01:00,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:01:00,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 04:01:00,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:01:00,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 04:01:00,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:01:00,368 INFO L87 Difference]: Start difference. First operand 2942 states and 4211 transitions. Second operand has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:01:03,743 INFO L93 Difference]: Finished difference Result 5591 states and 7572 transitions. [2023-11-29 04:01:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 04:01:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-29 04:01:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:01:03,763 INFO L225 Difference]: With dead ends: 5591 [2023-11-29 04:01:03,763 INFO L226 Difference]: Without dead ends: 5456 [2023-11-29 04:01:03,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=650, Invalid=2656, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 04:01:03,764 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 411 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:01:03,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1266 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:01:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2023-11-29 04:01:03,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 3790. [2023-11-29 04:01:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3790 states, 3785 states have (on average 1.441215323645971) internal successors, (5455), 3789 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 5455 transitions. [2023-11-29 04:01:03,815 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 5455 transitions. Word has length 48 [2023-11-29 04:01:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:01:03,815 INFO L495 AbstractCegarLoop]: Abstraction has 3790 states and 5455 transitions. [2023-11-29 04:01:03,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6363636363636362) internal successors, (87), 33 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 5455 transitions. [2023-11-29 04:01:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:01:03,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:01:03,818 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:01:03,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-11-29 04:01:04,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:01:04,018 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:01:04,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:01:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1213211760, now seen corresponding path program 6 times [2023-11-29 04:01:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:01:04,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192793982] [2023-11-29 04:01:04,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 04:01:04,019 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 [2023-11-29 04:01:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:01:04,020 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:01:04,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-29 04:01:04,330 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-29 04:01:04,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:01:04,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:01:04,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:01:04,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:04,357 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 13 treesize of output 7 [2023-11-29 04:01:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:04,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:04,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 04:01:04,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:04,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:04,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:01:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:01:05,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:01:07,672 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:01:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 04:01:07,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:01:07,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192793982] [2023-11-29 04:01:07,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192793982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:01:07,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:01:07,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-29 04:01:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141766380] [2023-11-29 04:01:07,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:01:07,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:01:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:01:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:01:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:01:07,784 INFO L87 Difference]: Start difference. First operand 3790 states and 5455 transitions. Second operand has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:01:26,873 INFO L93 Difference]: Finished difference Result 10352 states and 13477 transitions. [2023-11-29 04:01:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 04:01:26,875 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 04:01:26,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:01:26,904 INFO L225 Difference]: With dead ends: 10352 [2023-11-29 04:01:26,905 INFO L226 Difference]: Without dead ends: 10352 [2023-11-29 04:01:26,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=870, Invalid=2210, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 04:01:26,906 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 1563 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:01:26,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 337 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 04:01:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10352 states. [2023-11-29 04:01:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10352 to 4942. [2023-11-29 04:01:26,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 4937 states have (on average 1.4759975693741139) internal successors, (7287), 4941 states have internal predecessors, (7287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 7287 transitions. [2023-11-29 04:01:26,998 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 7287 transitions. Word has length 50 [2023-11-29 04:01:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:01:26,999 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 7287 transitions. [2023-11-29 04:01:26,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.12) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:01:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 7287 transitions. [2023-11-29 04:01:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:01:27,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:01:27,001 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1] [2023-11-29 04:01:27,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-11-29 04:01:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:01:27,201 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:01:27,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:01:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 266533023, now seen corresponding path program 4 times [2023-11-29 04:01:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:01:27,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506140423] [2023-11-29 04:01:27,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:01:27,202 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 [2023-11-29 04:01:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:01:27,203 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:01:27,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-11-29 04:01:27,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:01:27,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:01:27,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:01:27,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:01:27,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:27,549 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 13 treesize of output 15 [2023-11-29 04:01:27,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:01:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:01:27,589 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:01:27,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2023-11-29 04:01:27,600 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 10 treesize of output 8 [2023-11-29 04:01:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:01:30,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:01:40,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:01:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:01:41,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:01:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506140423] [2023-11-29 04:01:41,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506140423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:01:41,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:01:41,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-29 04:01:41,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136182460] [2023-11-29 04:01:41,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:01:41,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 04:01:41,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:01:41,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 04:01:41,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1971, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 04:01:41,111 INFO L87 Difference]: Start difference. First operand 4942 states and 7287 transitions. Second operand has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 52 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:02:05,327 WARN L293 SmtUtils]: Spent 14.45s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:02:45,300 WARN L293 SmtUtils]: Spent 38.80s on a formula simplification. DAG size of input: 255 DAG size of output: 254 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:03:01,610 WARN L293 SmtUtils]: Spent 15.02s on a formula simplification that was a NOOP. DAG size: 248 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:03:37,275 WARN L293 SmtUtils]: Spent 34.28s on a formula simplification. DAG size of input: 244 DAG size of output: 243 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:03:52,535 WARN L293 SmtUtils]: Spent 13.78s on a formula simplification that was a NOOP. DAG size: 237 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:04:21,140 WARN L293 SmtUtils]: Spent 27.06s on a formula simplification. DAG size of input: 233 DAG size of output: 232 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:04:30,555 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:04:53,010 WARN L293 SmtUtils]: Spent 20.72s on a formula simplification. DAG size of input: 223 DAG size of output: 222 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:03,000 WARN L293 SmtUtils]: Spent 8.63s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:25,858 WARN L293 SmtUtils]: Spent 21.32s on a formula simplification. DAG size of input: 212 DAG size of output: 211 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:35,358 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:05:53,145 WARN L293 SmtUtils]: Spent 16.27s on a formula simplification. DAG size of input: 201 DAG size of output: 200 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:03,037 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 194 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:20,445 WARN L293 SmtUtils]: Spent 15.74s on a formula simplification. DAG size of input: 190 DAG size of output: 189 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:28,691 WARN L293 SmtUtils]: Spent 6.93s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:45,924 WARN L293 SmtUtils]: Spent 15.68s on a formula simplification. DAG size of input: 180 DAG size of output: 179 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:06:53,453 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 173 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:07:06,368 WARN L293 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 169 DAG size of output: 168 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:07:22,441 WARN L293 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 158 DAG size of output: 157 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:07:34,755 WARN L293 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 147 DAG size of output: 146 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:08:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:29,934 INFO L93 Difference]: Finished difference Result 5120 states and 7513 transitions. [2023-11-29 04:08:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 04:08:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 52 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 04:08:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:29,942 INFO L225 Difference]: With dead ends: 5120 [2023-11-29 04:08:29,942 INFO L226 Difference]: Without dead ends: 5120 [2023-11-29 04:08:29,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3681 ImplicationChecksByTransitivity, 408.7s TimeCoverageRelationStatistics Valid=4425, Invalid=9855, Unknown=0, NotChecked=0, Total=14280 [2023-11-29 04:08:29,946 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 704 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:29,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 320 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-11-29 04:08:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2023-11-29 04:08:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 5038. [2023-11-29 04:08:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 5033 states have (on average 1.47645539439698) internal successors, (7431), 5037 states have internal predecessors, (7431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:08:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 7431 transitions. [2023-11-29 04:08:30,015 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 7431 transitions. Word has length 50 [2023-11-29 04:08:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:30,015 INFO L495 AbstractCegarLoop]: Abstraction has 5038 states and 7431 transitions. [2023-11-29 04:08:30,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 52 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:08:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 7431 transitions. [2023-11-29 04:08:30,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 04:08:30,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:30,018 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:08:30,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-11-29 04:08:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:08:30,218 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-29 04:08:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -539801015, now seen corresponding path program 4 times [2023-11-29 04:08:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:08:30,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804380045] [2023-11-29 04:08:30,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:08:30,220 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 [2023-11-29 04:08:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:08:30,221 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 04:08:30,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e232e7a9-c45e-4954-8f80-89fcdd2cca68/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-11-29 04:08:30,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:08:30,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:08:30,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:08:30,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:30,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:08:30,632 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 13 treesize of output 7 [2023-11-29 04:08:30,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 04:08:30,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:08:30,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:08:30,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 04:08:30,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:08:30,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:08:30,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2023-11-29 04:08:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:08:32,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:08:48,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:08:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:08:49,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:08:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804380045] [2023-11-29 04:08:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804380045] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:08:49,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:08:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2023-11-29 04:08:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171478519] [2023-11-29 04:08:49,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:08:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 04:08:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:08:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 04:08:49,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=852, Invalid=2454, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 04:08:49,257 INFO L87 Difference]: Start difference. First operand 5038 states and 7431 transitions. Second operand has 58 states, 57 states have (on average 1.8596491228070176) internal successors, (106), 58 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:09:13,855 WARN L293 SmtUtils]: Spent 14.58s on a formula simplification. DAG size of input: 261 DAG size of output: 208 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:09:24,758 WARN L293 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 257 DAG size of output: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:09:48,178 WARN L293 SmtUtils]: Spent 13.95s on a formula simplification. DAG size of input: 250 DAG size of output: 199 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:10:31,902 WARN L293 SmtUtils]: Spent 12.00s on a formula simplification. DAG size of input: 239 DAG size of output: 190 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:10:50,268 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 235 DAG size of output: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:11:27,083 WARN L293 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 229 DAG size of output: 182 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:12:33,313 WARN L293 SmtUtils]: Spent 11.04s on a formula simplification. DAG size of input: 218 DAG size of output: 173 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)