./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:15:08,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:15:08,629 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:15:08,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:15:08,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:15:08,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:15:08,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:15:08,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:15:08,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:15:08,676 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:15:08,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:15:08,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:15:08,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:15:08,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:15:08,679 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:15:08,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:15:08,680 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:15:08,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:15:08,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:15:08,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:15:08,682 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:15:08,682 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:15:08,683 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:15:08,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:15:08,695 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:15:08,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:15:08,696 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:15:08,696 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:15:08,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:15:08,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:15:08,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:15:08,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:15:08,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:08,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:15:08,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:15:08,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:15:08,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:15:08,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:15:08,700 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:15:08,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:15:08,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:15:08,701 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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2023-11-29 01:15:08,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:15:08,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:15:08,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:15:08,961 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:15:08,961 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:15:08,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-29 01:15:11,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:15:12,029 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:15:12,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-29 01:15:12,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/26776f826/9b6b6cddab764ec584fbcb5dbfa79594/FLAG599c1d0aa [2023-11-29 01:15:12,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/26776f826/9b6b6cddab764ec584fbcb5dbfa79594 [2023-11-29 01:15:12,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:15:12,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:15:12,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:12,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:15:12,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:15:12,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:12" (1/1) ... [2023-11-29 01:15:12,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e340020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:12, skipping insertion in model container [2023-11-29 01:15:12,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:12" (1/1) ... [2023-11-29 01:15:12,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:12,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:12,623 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 01:15:12,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fbc2aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:12, skipping insertion in model container [2023-11-29 01:15:12,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:12,624 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 01:15:12,626 INFO L158 Benchmark]: Toolchain (without parser) took 547.39ms. Allocated memory is still 182.5MB. Free memory was 153.8MB in the beginning and 131.6MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:15:12,627 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:15:12,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.16ms. Allocated memory is still 182.5MB. Free memory was 153.8MB in the beginning and 131.6MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 01:15:12,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 127.9MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.16ms. Allocated memory is still 182.5MB. Free memory was 153.8MB in the beginning and 131.6MB in the end (delta: 22.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:15:14,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:15:14,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 01:15:14,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:15:14,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:15:14,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:15:14,476 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:15:14,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:15:14,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:15:14,478 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:15:14,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:15:14,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:15:14,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:15:14,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:15:14,481 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:15:14,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:15:14,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:15:14,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:15:14,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:15:14,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:15:14,484 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:15:14,485 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:15:14,486 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:15:14,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:15:14,487 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:15:14,487 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:15:14,487 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:15:14,488 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:15:14,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:15:14,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:15:14,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:15:14,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:15:14,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:15:14,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:15:14,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:14,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:15:14,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:15:14,491 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:15:14,491 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:15:14,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:15:14,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:15:14,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:15:14,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:15:14,492 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:15:14,492 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_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2023-11-29 01:15:14,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:15:14,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:15:14,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:15:14,829 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:15:14,830 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:15:14,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-29 01:15:17,643 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:15:17,925 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:15:17,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-29 01:15:17,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/8077b4516/0b71ac197bde47b8b7a275ec490fed33/FLAGb080262a0 [2023-11-29 01:15:17,960 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/data/8077b4516/0b71ac197bde47b8b7a275ec490fed33 [2023-11-29 01:15:17,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:15:17,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:15:17,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:17,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:15:17,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:15:17,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:17" (1/1) ... [2023-11-29 01:15:17,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7076308b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:17, skipping insertion in model container [2023-11-29 01:15:17,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:15:17" (1/1) ... [2023-11-29 01:15:18,045 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:18,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:18,577 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 01:15:18,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:15:18,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:18,677 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:15:18,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:15:18,820 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:15:18,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18 WrapperNode [2023-11-29 01:15:18,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:15:18,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:18,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:15:18,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:15:18,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:18,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:18,934 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1487 [2023-11-29 01:15:18,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:15:18,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:15:18,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:15:18,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:15:18,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:18,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:18,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,094 INFO L175 MemorySlicer]: Split 413 memory accesses to 4 slices as follows [401, 2, 5, 5]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 100 writes are split as follows [98, 0, 1, 1]. [2023-11-29 01:15:19,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:15:19,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:15:19,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:15:19,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:15:19,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (1/1) ... [2023-11-29 01:15:19,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:15:19,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:15:19,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:15:19,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:15:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 01:15:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 01:15:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 01:15:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:15:19,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:15:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:15:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:15:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:15:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:15:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:15:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:15:19,269 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:15:19,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:15:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:15:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:15:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:15:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:15:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:15:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:15:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:15:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 01:15:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 01:15:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 01:15:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 01:15:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:15:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 01:15:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 01:15:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 01:15:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:15:19,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:15:19,516 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:15:19,518 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:15:19,521 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:15:19,573 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:15:19,594 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:15:19,614 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:15:25,586 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:15:25,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:15:25,799 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-29 01:15:25,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:25 BoogieIcfgContainer [2023-11-29 01:15:25,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:15:25,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:15:25,802 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:15:25,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:15:25,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:15:17" (1/3) ... [2023-11-29 01:15:25,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a30306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:25, skipping insertion in model container [2023-11-29 01:15:25,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:15:18" (2/3) ... [2023-11-29 01:15:25,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a30306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:15:25, skipping insertion in model container [2023-11-29 01:15:25,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:15:25" (3/3) ... [2023-11-29 01:15:25,808 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2023-11-29 01:15:25,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:15:25,824 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-29 01:15:25,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:15:25,901 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;@238abee3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:15:25,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-29 01:15:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:15:25,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:25,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:15:25,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:25,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 79528167, now seen corresponding path program 1 times [2023-11-29 01:15:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325552355] [2023-11-29 01:15:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:25,945 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 01:15:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:25,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:25,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:26,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:15:26,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:26,218 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 01:15:26,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:26,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325552355] [2023-11-29 01:15:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325552355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:26,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293199304] [2023-11-29 01:15:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:26,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:15:26,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:15:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:15:26,263 INFO L87 Difference]: Start difference. First operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:27,194 INFO L93 Difference]: Finished difference Result 1486 states and 1577 transitions. [2023-11-29 01:15:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:15:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 01:15:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:27,215 INFO L225 Difference]: With dead ends: 1486 [2023-11-29 01:15:27,215 INFO L226 Difference]: Without dead ends: 1485 [2023-11-29 01:15:27,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:15:27,220 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:27,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1419 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:15:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-29 01:15:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2023-11-29 01:15:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 632 states have (on average 2.4430379746835444) internal successors, (1544), 1476 states have internal predecessors, (1544), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1576 transitions. [2023-11-29 01:15:27,322 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1576 transitions. Word has length 4 [2023-11-29 01:15:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:27,323 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 1576 transitions. [2023-11-29 01:15:27,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1576 transitions. [2023-11-29 01:15:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:15:27,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:27,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:15:27,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:27,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:27,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 79528229, now seen corresponding path program 1 times [2023-11-29 01:15:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227994351] [2023-11-29 01:15:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:27,526 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 01:15:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:27,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:27,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:27,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:27,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:27,719 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 01:15:27,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:27,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:27,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227994351] [2023-11-29 01:15:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227994351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899050359] [2023-11-29 01:15:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:27,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:27,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:27,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:27,723 INFO L87 Difference]: Start difference. First operand 1485 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:30,442 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2023-11-29 01:15:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:30,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 01:15:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:30,452 INFO L225 Difference]: With dead ends: 1515 [2023-11-29 01:15:30,452 INFO L226 Difference]: Without dead ends: 1515 [2023-11-29 01:15:30,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:30,454 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1042 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:30,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1073 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 01:15:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-11-29 01:15:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1458. [2023-11-29 01:15:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 698 states have (on average 2.2578796561604584) internal successors, (1576), 1449 states have internal predecessors, (1576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1608 transitions. [2023-11-29 01:15:30,495 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1608 transitions. Word has length 4 [2023-11-29 01:15:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:30,496 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1608 transitions. [2023-11-29 01:15:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1608 transitions. [2023-11-29 01:15:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:15:30,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:30,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:15:30,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:15:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:30,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:30,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 79528230, now seen corresponding path program 1 times [2023-11-29 01:15:30,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:30,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992325489] [2023-11-29 01:15:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:30,699 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 01:15:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:30,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:30,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:15:30,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:30,826 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 01:15:30,845 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 01:15:30,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:30,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992325489] [2023-11-29 01:15:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992325489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:30,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:30,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809603423] [2023-11-29 01:15:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:30,848 INFO L87 Difference]: Start difference. First operand 1458 states and 1608 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:35,165 INFO L93 Difference]: Finished difference Result 1730 states and 1900 transitions. [2023-11-29 01:15:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:35,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 01:15:35,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:35,175 INFO L225 Difference]: With dead ends: 1730 [2023-11-29 01:15:35,175 INFO L226 Difference]: Without dead ends: 1730 [2023-11-29 01:15:35,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:35,177 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 456 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:35,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1701 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 01:15:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-11-29 01:15:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1581. [2023-11-29 01:15:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 831 states have (on average 2.2250300842358604) internal successors, (1849), 1572 states have internal predecessors, (1849), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1881 transitions. [2023-11-29 01:15:35,234 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1881 transitions. Word has length 4 [2023-11-29 01:15:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:35,234 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 1881 transitions. [2023-11-29 01:15:35,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:35,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1881 transitions. [2023-11-29 01:15:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:15:35,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:35,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:15:35,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:35,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:35,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:35,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1827900904, now seen corresponding path program 1 times [2023-11-29 01:15:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27401434] [2023-11-29 01:15:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:35,438 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 01:15:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:35,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:35,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:35,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:15:35,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:35,573 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 01:15:35,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:35,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:35,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27401434] [2023-11-29 01:15:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27401434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060334629] [2023-11-29 01:15:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:35,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:35,576 INFO L87 Difference]: Start difference. First operand 1581 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:37,113 INFO L93 Difference]: Finished difference Result 2770 states and 3331 transitions. [2023-11-29 01:15:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:37,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:15:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:37,130 INFO L225 Difference]: With dead ends: 2770 [2023-11-29 01:15:37,130 INFO L226 Difference]: Without dead ends: 2770 [2023-11-29 01:15:37,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:37,132 INFO L413 NwaCegarLoop]: 1316 mSDtfsCounter, 1029 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:37,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2627 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:15:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-29 01:15:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1582. [2023-11-29 01:15:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 832 states have (on average 2.2235576923076925) internal successors, (1850), 1573 states have internal predecessors, (1850), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1882 transitions. [2023-11-29 01:15:37,206 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1882 transitions. Word has length 5 [2023-11-29 01:15:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:37,206 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 1882 transitions. [2023-11-29 01:15:37,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1882 transitions. [2023-11-29 01:15:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:15:37,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:37,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:37,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:37,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:37,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:37,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1705953425, now seen corresponding path program 1 times [2023-11-29 01:15:37,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:37,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457227899] [2023-11-29 01:15:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:37,412 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 01:15:37,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:37,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:37,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:37,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:15:37,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:37,623 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 01:15:37,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:37,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457227899] [2023-11-29 01:15:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457227899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150436232] [2023-11-29 01:15:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:37,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:37,626 INFO L87 Difference]: Start difference. First operand 1582 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) 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 01:15:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:38,721 INFO L93 Difference]: Finished difference Result 1543 states and 1842 transitions. [2023-11-29 01:15:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 01:15:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:38,730 INFO L225 Difference]: With dead ends: 1543 [2023-11-29 01:15:38,730 INFO L226 Difference]: Without dead ends: 1543 [2023-11-29 01:15:38,730 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 01:15:38,731 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 70 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:38,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2485 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:15:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-11-29 01:15:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-11-29 01:15:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 817 states have (on average 2.215422276621787) internal successors, (1810), 1534 states have internal predecessors, (1810), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1842 transitions. [2023-11-29 01:15:38,767 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1842 transitions. Word has length 10 [2023-11-29 01:15:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:38,767 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1842 transitions. [2023-11-29 01:15:38,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 01:15:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1842 transitions. [2023-11-29 01:15:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 01:15:38,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:38,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:38,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:38,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:38,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1256262345, now seen corresponding path program 1 times [2023-11-29 01:15:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:38,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438165252] [2023-11-29 01:15:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:38,972 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 01:15:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:38,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:39,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:39,134 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 01:15:39,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:39,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:39,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438165252] [2023-11-29 01:15:39,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438165252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:39,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008337693] [2023-11-29 01:15:39,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:39,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:39,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:39,136 INFO L87 Difference]: Start difference. First operand 1543 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:40,585 INFO L93 Difference]: Finished difference Result 1529 states and 1821 transitions. [2023-11-29 01:15:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 01:15:40,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:40,593 INFO L225 Difference]: With dead ends: 1529 [2023-11-29 01:15:40,593 INFO L226 Difference]: Without dead ends: 1529 [2023-11-29 01:15:40,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 01:15:40,594 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 58 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:40,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3684 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:15:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-11-29 01:15:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1528. [2023-11-29 01:15:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 816 states have (on average 2.1911764705882355) internal successors, (1788), 1519 states have internal predecessors, (1788), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1820 transitions. [2023-11-29 01:15:40,627 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1820 transitions. Word has length 12 [2023-11-29 01:15:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:40,628 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1820 transitions. [2023-11-29 01:15:40,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1820 transitions. [2023-11-29 01:15:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:15:40,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:40,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:40,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:40,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:40,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1440591927, now seen corresponding path program 1 times [2023-11-29 01:15:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:40,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677843234] [2023-11-29 01:15:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:40,834 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 01:15:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:40,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:40,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:40,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:15:40,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:40,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:41,057 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 01:15:41,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:41,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677843234] [2023-11-29 01:15:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677843234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189591067] [2023-11-29 01:15:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:41,060 INFO L87 Difference]: Start difference. First operand 1528 states and 1820 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:44,227 INFO L93 Difference]: Finished difference Result 1581 states and 1827 transitions. [2023-11-29 01:15:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:44,236 INFO L225 Difference]: With dead ends: 1581 [2023-11-29 01:15:44,236 INFO L226 Difference]: Without dead ends: 1581 [2023-11-29 01:15:44,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 01:15:44,237 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 977 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:44,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1579 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 01:15:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-29 01:15:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1524. [2023-11-29 01:15:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 816 states have (on average 2.1862745098039214) internal successors, (1784), 1515 states have internal predecessors, (1784), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1816 transitions. [2023-11-29 01:15:44,268 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1816 transitions. Word has length 26 [2023-11-29 01:15:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:44,268 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1816 transitions. [2023-11-29 01:15:44,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1816 transitions. [2023-11-29 01:15:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:15:44,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:44,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:44,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:44,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:44,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1440591928, now seen corresponding path program 1 times [2023-11-29 01:15:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105062891] [2023-11-29 01:15:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:44,472 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 01:15:44,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:44,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:44,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:44,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:44,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:44,689 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 01:15:44,874 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 01:15:44,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:44,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:44,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105062891] [2023-11-29 01:15:44,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105062891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:44,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:44,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875789995] [2023-11-29 01:15:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:44,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:44,876 INFO L87 Difference]: Start difference. First operand 1524 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:49,751 INFO L93 Difference]: Finished difference Result 1669 states and 1831 transitions. [2023-11-29 01:15:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:49,758 INFO L225 Difference]: With dead ends: 1669 [2023-11-29 01:15:49,758 INFO L226 Difference]: Without dead ends: 1669 [2023-11-29 01:15:49,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 01:15:49,759 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 393 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:49,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2258 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 01:15:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-29 01:15:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1520. [2023-11-29 01:15:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 816 states have (on average 2.1813725490196076) internal successors, (1780), 1511 states have internal predecessors, (1780), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1812 transitions. [2023-11-29 01:15:49,782 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1812 transitions. Word has length 26 [2023-11-29 01:15:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 1812 transitions. [2023-11-29 01:15:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 01:15:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1812 transitions. [2023-11-29 01:15:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 01:15:49,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:49,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:49,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:49,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:49,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash 133345713, now seen corresponding path program 1 times [2023-11-29 01:15:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099784908] [2023-11-29 01:15:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:49,986 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 01:15:49,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:49,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:49,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:50,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:50,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:50,226 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 01:15:50,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:50,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099784908] [2023-11-29 01:15:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099784908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:50,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168762786] [2023-11-29 01:15:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:50,228 INFO L87 Difference]: Start difference. First operand 1520 states and 1812 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 01:15:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:51,609 INFO L93 Difference]: Finished difference Result 1514 states and 1802 transitions. [2023-11-29 01:15:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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) Word has length 42 [2023-11-29 01:15:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:51,616 INFO L225 Difference]: With dead ends: 1514 [2023-11-29 01:15:51,616 INFO L226 Difference]: Without dead ends: 1514 [2023-11-29 01:15:51,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 01:15:51,617 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 23 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:51,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3670 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:15:51,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2023-11-29 01:15:51,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2023-11-29 01:15:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 810 states have (on average 2.185185185185185) internal successors, (1770), 1505 states have internal predecessors, (1770), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1802 transitions. [2023-11-29 01:15:51,637 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1802 transitions. Word has length 42 [2023-11-29 01:15:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:51,637 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1802 transitions. [2023-11-29 01:15:51,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 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 01:15:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1802 transitions. [2023-11-29 01:15:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:15:51,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:51,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:51,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:51,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:51,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:51,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:51,840 INFO L85 PathProgramCache]: Analyzing trace with hash -27621487, now seen corresponding path program 1 times [2023-11-29 01:15:51,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973066530] [2023-11-29 01:15:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:51,841 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 01:15:51,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:51,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:51,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:52,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:52,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:52,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:52,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973066530] [2023-11-29 01:15:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973066530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:52,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:15:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478453595] [2023-11-29 01:15:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:52,274 INFO L87 Difference]: Start difference. First operand 1514 states and 1802 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 01:15:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:53,530 INFO L93 Difference]: Finished difference Result 1902 states and 2207 transitions. [2023-11-29 01:15:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 46 [2023-11-29 01:15:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:53,539 INFO L225 Difference]: With dead ends: 1902 [2023-11-29 01:15:53,539 INFO L226 Difference]: Without dead ends: 1902 [2023-11-29 01:15:53,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 01:15:53,540 INFO L413 NwaCegarLoop]: 1296 mSDtfsCounter, 419 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:53,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2426 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:15:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2023-11-29 01:15:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1557. [2023-11-29 01:15:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 853 states have (on average 2.1254396248534584) internal successors, (1813), 1548 states have internal predecessors, (1813), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1845 transitions. [2023-11-29 01:15:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1845 transitions. Word has length 46 [2023-11-29 01:15:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:53,569 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 1845 transitions. [2023-11-29 01:15:53,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 01:15:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1845 transitions. [2023-11-29 01:15:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 01:15:53,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:53,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:53,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:15:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:53,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:53,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1654546656, now seen corresponding path program 1 times [2023-11-29 01:15:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341406877] [2023-11-29 01:15:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:53,776 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 01:15:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:53,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:53,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:54,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:15:54,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:54,147 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 01:15:54,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:54,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:15:54,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:15:54,620 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:15:54,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:15:54,645 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 01:15:54,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:54,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341406877] [2023-11-29 01:15:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341406877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:54,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:54,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774954157] [2023-11-29 01:15:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:54,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:54,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:54,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:54,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:54,647 INFO L87 Difference]: Start difference. First operand 1557 states and 1845 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:57,971 INFO L93 Difference]: Finished difference Result 1529 states and 1771 transitions. [2023-11-29 01:15:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-29 01:15:57,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:57,977 INFO L225 Difference]: With dead ends: 1529 [2023-11-29 01:15:57,977 INFO L226 Difference]: Without dead ends: 1529 [2023-11-29 01:15:57,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:57,977 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1748 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:57,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 857 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:15:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-11-29 01:15:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1340. [2023-11-29 01:15:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 720 states have (on average 2.0069444444444446) internal successors, (1445), 1331 states have internal predecessors, (1445), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:15:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1477 transitions. [2023-11-29 01:15:57,999 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1477 transitions. Word has length 49 [2023-11-29 01:15:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:58,000 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1477 transitions. [2023-11-29 01:15:58,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:58,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1477 transitions. [2023-11-29 01:15:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:15:58,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:58,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:58,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:58,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:58,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:58,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1158164002, now seen corresponding path program 1 times [2023-11-29 01:15:58,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:58,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993317299] [2023-11-29 01:15:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:58,206 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 01:15:58,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:58,206 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:58,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:15:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:58,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:58,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:58,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:58,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:15:58,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:15:58,503 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 01:15:58,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:58,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:58,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993317299] [2023-11-29 01:15:58,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993317299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:58,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69872601] [2023-11-29 01:15:58,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:58,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:58,505 INFO L87 Difference]: Start difference. First operand 1340 states and 1477 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:16:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:02,551 INFO L93 Difference]: Finished difference Result 1339 states and 1476 transitions. [2023-11-29 01:16:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:16:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 01:16:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:02,556 INFO L225 Difference]: With dead ends: 1339 [2023-11-29 01:16:02,557 INFO L226 Difference]: Without dead ends: 1339 [2023-11-29 01:16:02,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:16:02,557 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 3 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:02,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2945 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 01:16:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-11-29 01:16:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-11-29 01:16:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 720 states have (on average 2.0055555555555555) internal successors, (1444), 1330 states have internal predecessors, (1444), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:16:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1476 transitions. [2023-11-29 01:16:02,573 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1476 transitions. Word has length 53 [2023-11-29 01:16:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:02,573 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1476 transitions. [2023-11-29 01:16:02,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:16:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1476 transitions. [2023-11-29 01:16:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 01:16:02,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:02,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:02,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:02,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:02,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:02,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1158164001, now seen corresponding path program 1 times [2023-11-29 01:16:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807528586] [2023-11-29 01:16:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:02,781 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 01:16:02,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:02,782 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:02,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:02,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:16:03,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:03,010 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 01:16:03,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:16:03,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:16:03,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 01:16:03,091 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 01:16:03,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:16:03,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807528586] [2023-11-29 01:16:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807528586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:03,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:03,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:16:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804599812] [2023-11-29 01:16:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:03,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:16:03,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:16:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:16:03,093 INFO L87 Difference]: Start difference. First operand 1339 states and 1476 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:16:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:08,460 INFO L93 Difference]: Finished difference Result 1338 states and 1475 transitions. [2023-11-29 01:16:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:16:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 01:16:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:08,466 INFO L225 Difference]: With dead ends: 1338 [2023-11-29 01:16:08,466 INFO L226 Difference]: Without dead ends: 1338 [2023-11-29 01:16:08,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:16:08,466 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:08,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2994 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 01:16:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2023-11-29 01:16:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2023-11-29 01:16:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 719 states have (on average 2.0069541029207234) internal successors, (1443), 1329 states have internal predecessors, (1443), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 01:16:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1475 transitions. [2023-11-29 01:16:08,484 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1475 transitions. Word has length 53 [2023-11-29 01:16:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:08,484 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1475 transitions. [2023-11-29 01:16:08,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 01:16:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1475 transitions. [2023-11-29 01:16:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:16:08,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:08,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:08,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:16:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:08,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:08,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -628389054, now seen corresponding path program 1 times [2023-11-29 01:16:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69182721] [2023-11-29 01:16:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:08,687 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 01:16:08,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:08,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:08,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:08,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:16:08,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:08,988 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 01:16:08,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:16:08,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:08,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69182721] [2023-11-29 01:16:08,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69182721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:16:08,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:16:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:16:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283366461] [2023-11-29 01:16:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:16:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:16:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:08,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:16:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:16:08,990 INFO L87 Difference]: Start difference. First operand 1338 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:16:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:10,396 INFO L93 Difference]: Finished difference Result 1340 states and 1479 transitions. [2023-11-29 01:16:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:16:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-11-29 01:16:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:10,404 INFO L225 Difference]: With dead ends: 1340 [2023-11-29 01:16:10,404 INFO L226 Difference]: Without dead ends: 1340 [2023-11-29 01:16:10,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 01:16:10,405 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 1 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:10,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3465 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:16:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2023-11-29 01:16:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2023-11-29 01:16:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 720 states have (on average 2.0069444444444446) internal successors, (1445), 1331 states have internal predecessors, (1445), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:16:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1479 transitions. [2023-11-29 01:16:10,427 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1479 transitions. Word has length 59 [2023-11-29 01:16:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:10,428 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1479 transitions. [2023-11-29 01:16:10,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:16:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1479 transitions. [2023-11-29 01:16:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 01:16:10,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:10,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:10,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:10,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:10,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:10,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash -735350554, now seen corresponding path program 1 times [2023-11-29 01:16:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70055623] [2023-11-29 01:16:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:16:10,633 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 01:16:10,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:10,634 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:10,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:16:10,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:16:10,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:10,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:10,999 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70055623] [2023-11-29 01:16:10,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70055623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:10,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:10,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:16:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325698833] [2023-11-29 01:16:11,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:11,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:16:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:16:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:16:11,001 INFO L87 Difference]: Start difference. First operand 1340 states and 1479 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:12,860 INFO L93 Difference]: Finished difference Result 1349 states and 1494 transitions. [2023-11-29 01:16:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:16:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2023-11-29 01:16:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:12,866 INFO L225 Difference]: With dead ends: 1349 [2023-11-29 01:16:12,866 INFO L226 Difference]: Without dead ends: 1349 [2023-11-29 01:16:12,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:16:12,867 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 6 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:12,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4612 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:16:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-11-29 01:16:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1348. [2023-11-29 01:16:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 727 states have (on average 2.0055020632737275) internal successors, (1458), 1338 states have internal predecessors, (1458), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:16:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1492 transitions. [2023-11-29 01:16:12,884 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1492 transitions. Word has length 60 [2023-11-29 01:16:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:12,884 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1492 transitions. [2023-11-29 01:16:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1492 transitions. [2023-11-29 01:16:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:16:12,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:12,885 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:12,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:13,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:13,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:13,086 INFO L85 PathProgramCache]: Analyzing trace with hash 908710978, now seen corresponding path program 2 times [2023-11-29 01:16:13,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422771213] [2023-11-29 01:16:13,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:16:13,087 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 01:16:13,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:13,087 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:13,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:13,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:16:13,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:13,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:16:13,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:13,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:13,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422771213] [2023-11-29 01:16:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422771213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:13,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:13,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 01:16:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737545356] [2023-11-29 01:16:13,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:16:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:16:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:16:13,641 INFO L87 Difference]: Start difference. First operand 1348 states and 1492 transitions. Second operand has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:16,538 INFO L93 Difference]: Finished difference Result 1363 states and 1518 transitions. [2023-11-29 01:16:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:16:16,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-11-29 01:16:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:16,551 INFO L225 Difference]: With dead ends: 1363 [2023-11-29 01:16:16,551 INFO L226 Difference]: Without dead ends: 1361 [2023-11-29 01:16:16,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:16:16,552 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 12 mSDsluCounter, 5765 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6920 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:16,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6920 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:16:16,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2023-11-29 01:16:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1357. [2023-11-29 01:16:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 736 states have (on average 1.997282608695652) internal successors, (1470), 1347 states have internal predecessors, (1470), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:16:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1504 transitions. [2023-11-29 01:16:16,573 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1504 transitions. Word has length 63 [2023-11-29 01:16:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:16,573 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1504 transitions. [2023-11-29 01:16:16,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1504 transitions. [2023-11-29 01:16:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 01:16:16,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:16,574 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:16,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:16,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:16,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:16,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1337708994, now seen corresponding path program 3 times [2023-11-29 01:16:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:16,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282245024] [2023-11-29 01:16:16,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:16:16,776 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 01:16:16,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:16,777 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:16,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:17,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 01:16:17,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:17,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:16:17,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:17,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:18,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282245024] [2023-11-29 01:16:18,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282245024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:18,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:18,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 01:16:18,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444137218] [2023-11-29 01:16:18,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:18,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:16:18,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:16:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:16:18,143 INFO L87 Difference]: Start difference. First operand 1357 states and 1504 transitions. Second operand has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:25,404 INFO L93 Difference]: Finished difference Result 1387 states and 1568 transitions. [2023-11-29 01:16:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:16:25,404 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2023-11-29 01:16:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:25,410 INFO L225 Difference]: With dead ends: 1387 [2023-11-29 01:16:25,410 INFO L226 Difference]: Without dead ends: 1384 [2023-11-29 01:16:25,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:16:25,411 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 24 mSDsluCounter, 12657 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 13810 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:25,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 13810 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 01:16:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2023-11-29 01:16:25,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1375. [2023-11-29 01:16:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 754 states have (on average 1.9801061007957559) internal successors, (1493), 1365 states have internal predecessors, (1493), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:16:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1527 transitions. [2023-11-29 01:16:25,434 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1527 transitions. Word has length 69 [2023-11-29 01:16:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:25,434 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1527 transitions. [2023-11-29 01:16:25,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1527 transitions. [2023-11-29 01:16:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 01:16:25,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:25,436 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:25,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:25,639 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:25,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash 993750210, now seen corresponding path program 4 times [2023-11-29 01:16:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:25,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459652222] [2023-11-29 01:16:25,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:16:25,641 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 01:16:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:25,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:25,969 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:16:25,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:25,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:16:25,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:26,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:27,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459652222] [2023-11-29 01:16:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459652222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:27,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 01:16:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884703087] [2023-11-29 01:16:27,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 01:16:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:27,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 01:16:27,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:16:27,751 INFO L87 Difference]: Start difference. First operand 1375 states and 1527 transitions. Second operand has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:45,761 INFO L93 Difference]: Finished difference Result 1432 states and 1637 transitions. [2023-11-29 01:16:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 01:16:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-29 01:16:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:45,767 INFO L225 Difference]: With dead ends: 1432 [2023-11-29 01:16:45,767 INFO L226 Difference]: Without dead ends: 1430 [2023-11-29 01:16:45,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 01:16:45,772 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 47 mSDsluCounter, 28821 mSDsCounter, 0 mSdLazyCounter, 6816 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 29976 SdHoareTripleChecker+Invalid, 6921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 6816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:45,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 29976 Invalid, 6921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 6816 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-11-29 01:16:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-11-29 01:16:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1409. [2023-11-29 01:16:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 788 states have (on average 1.9530456852791878) internal successors, (1539), 1399 states have internal predecessors, (1539), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:16:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1573 transitions. [2023-11-29 01:16:45,816 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1573 transitions. Word has length 81 [2023-11-29 01:16:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:45,817 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1573 transitions. [2023-11-29 01:16:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1573 transitions. [2023-11-29 01:16:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 01:16:45,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:45,818 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:16:45,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:16:46,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:46,019 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:46,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash 254357058, now seen corresponding path program 5 times [2023-11-29 01:16:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541595191] [2023-11-29 01:16:46,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:16:46,020 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 01:16:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:46,021 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:46,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:16:47,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:16:47,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:47,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 01:16:47,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:47,475 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:16:47,476 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 12 treesize of output 22 [2023-11-29 01:16:47,860 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-29 01:16:47,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2023-11-29 01:16:47,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:16:48,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 01:16:50,539 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:16:50,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 59 [2023-11-29 01:16:50,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-11-29 01:16:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:16:50,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:51,153 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1648 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1648) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:16:51,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541595191] [2023-11-29 01:16:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541595191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:51,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2018115577] [2023-11-29 01:16:51,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:16:51,156 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:16:51,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:16:51,157 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:16:51,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-29 01:17:57,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:17:57,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:57,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 01:17:57,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:57,322 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:17:57,323 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 14 treesize of output 20 [2023-11-29 01:17:57,702 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:17:57,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:17:57,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:17:58,409 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:17:58,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:17:58,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:17:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:17:58,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:58,974 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-11-29 01:17:58,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-11-29 01:17:58,981 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2092 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2092) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-29 01:17:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2018115577] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:17:58,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:17:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2023-11-29 01:17:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689513677] [2023-11-29 01:17:58,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:17:58,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:17:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:17:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=410, Unknown=2, NotChecked=82, Total=552 [2023-11-29 01:17:58,986 INFO L87 Difference]: Start difference. First operand 1409 states and 1573 transitions. Second operand has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:18:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:21,963 INFO L93 Difference]: Finished difference Result 2737 states and 2963 transitions. [2023-11-29 01:18:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:18:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2023-11-29 01:18:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:21,968 INFO L225 Difference]: With dead ends: 2737 [2023-11-29 01:18:21,968 INFO L226 Difference]: Without dead ends: 2733 [2023-11-29 01:18:21,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=271, Invalid=1627, Unknown=2, NotChecked=170, Total=2070 [2023-11-29 01:18:21,969 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 5601 mSDsluCounter, 6835 mSDsCounter, 0 mSdLazyCounter, 9868 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5601 SdHoareTripleChecker+Valid, 7487 SdHoareTripleChecker+Invalid, 10113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 9868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:21,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5601 Valid, 7487 Invalid, 10113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [245 Valid, 9868 Invalid, 0 Unknown, 0 Unchecked, 21.7s Time] [2023-11-29 01:18:21,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2023-11-29 01:18:21,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1455. [2023-11-29 01:18:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 834 states have (on average 1.9004796163069544) internal successors, (1585), 1444 states have internal predecessors, (1585), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:18:22,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1619 transitions. [2023-11-29 01:18:22,004 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1619 transitions. Word has length 103 [2023-11-29 01:18:22,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:22,005 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1619 transitions. [2023-11-29 01:18:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:18:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1619 transitions. [2023-11-29 01:18:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 01:18:22,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:22,007 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:18:22,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:18:22,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-11-29 01:18:22,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:18:22,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:18:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash 254357059, now seen corresponding path program 1 times [2023-11-29 01:18:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:18:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197925924] [2023-11-29 01:18:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:22,414 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 01:18:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:18:22,415 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:18:22,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:18:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:23,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-29 01:18:23,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:23,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:18:23,442 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 01:18:23,455 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:18:23,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:18:23,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:18:23,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:18:23,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:18:23,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:18:24,402 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:18:24,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:18:24,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:18:24,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:18:24,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:18:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:18:24,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:26,204 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2629 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2629) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2628 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2629 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2629) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2628) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:18:26,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:18:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197925924] [2023-11-29 01:18:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197925924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1321891922] [2023-11-29 01:18:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:26,212 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:18:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:18:26,213 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:18:26,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-29 01:20:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:02,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 01:20:02,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:02,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:20:02,856 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 01:20:02,868 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:20:02,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:20:02,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:20:02,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:20:02,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:20:02,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:20:03,499 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:03,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:20:03,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:20:03,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:20:03,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:20:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:03,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:04,756 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3165 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3165) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3165 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3165) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3166) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:20:04,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1321891922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:04,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:04,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 01:20:04,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612629168] [2023-11-29 01:20:04,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:04,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:20:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:20:04,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:20:04,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=88, Unknown=2, NotChecked=38, Total=156 [2023-11-29 01:20:04,764 INFO L87 Difference]: Start difference. First operand 1455 states and 1619 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:20:16,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:16,648 INFO L93 Difference]: Finished difference Result 1798 states and 1930 transitions. [2023-11-29 01:20:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:20:16,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-11-29 01:20:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:16,653 INFO L225 Difference]: With dead ends: 1798 [2023-11-29 01:20:16,653 INFO L226 Difference]: Without dead ends: 1798 [2023-11-29 01:20:16,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2023-11-29 01:20:16,653 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 706 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 5427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 5438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:16,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3375 Invalid, 5438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5427 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-11-29 01:20:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2023-11-29 01:20:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1454. [2023-11-29 01:20:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 834 states have (on average 1.8992805755395683) internal successors, (1584), 1443 states have internal predecessors, (1584), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:20:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1618 transitions. [2023-11-29 01:20:16,682 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1618 transitions. Word has length 103 [2023-11-29 01:20:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:16,682 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 1618 transitions. [2023-11-29 01:20:16,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:20:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1618 transitions. [2023-11-29 01:20:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 01:20:16,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:16,684 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:20:16,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:20:16,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-29 01:20:17,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:17,084 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:20:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -373745624, now seen corresponding path program 1 times [2023-11-29 01:20:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:20:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068412786] [2023-11-29 01:20:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:17,086 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 01:20:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:20:17,086 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:20:17,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:20:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:17,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 01:20:17,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:17,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:20:17,977 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:20:17,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:20:18,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:20:18,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:20:18,824 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:18,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:20:18,921 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:18,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:20:18,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:20:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:18,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:19,040 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3572) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:20:19,049 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3572) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:20:19,400 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3618 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3618))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3572)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:20:19,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:20:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068412786] [2023-11-29 01:20:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068412786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1553911569] [2023-11-29 01:20:19,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:19,403 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:19,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:20:19,404 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:20:19,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-29 01:20:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:21,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 01:20:21,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:21,511 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:20:21,511 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 14 treesize of output 20 [2023-11-29 01:20:21,849 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:20:21,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:20:21,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:20:22,389 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:22,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:20:22,522 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:22,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:20:22,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:20:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:22,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:22,582 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4023) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:20:22,590 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4023) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 01:20:22,960 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-11-29 01:20:22,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 01:20:22,970 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4069))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4023)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-11-29 01:20:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1553911569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:22,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:22,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2023-11-29 01:20:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86973758] [2023-11-29 01:20:22,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:20:22,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:20:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:20:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=446, Unknown=6, NotChecked=282, Total=812 [2023-11-29 01:20:22,974 INFO L87 Difference]: Start difference. First operand 1454 states and 1618 transitions. Second operand has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:20:44,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:44,218 INFO L93 Difference]: Finished difference Result 2729 states and 2951 transitions. [2023-11-29 01:20:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:20:44,218 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2023-11-29 01:20:44,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:44,223 INFO L225 Difference]: With dead ends: 2729 [2023-11-29 01:20:44,223 INFO L226 Difference]: Without dead ends: 2729 [2023-11-29 01:20:44,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=1152, Unknown=6, NotChecked=450, Total=1806 [2023-11-29 01:20:44,224 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 1954 mSDsluCounter, 9892 mSDsCounter, 0 mSdLazyCounter, 13205 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 10635 SdHoareTripleChecker+Invalid, 13298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 13205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:44,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 10635 Invalid, 13298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 13205 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2023-11-29 01:20:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2023-11-29 01:20:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1453. [2023-11-29 01:20:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 834 states have (on average 1.8980815347721822) internal successors, (1583), 1442 states have internal predecessors, (1583), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:20:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1617 transitions. [2023-11-29 01:20:44,246 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1617 transitions. Word has length 105 [2023-11-29 01:20:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:44,247 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1617 transitions. [2023-11-29 01:20:44,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:20:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1617 transitions. [2023-11-29 01:20:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 01:20:44,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:44,248 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:20:44,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:20:44,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-29 01:20:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:44,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:20:44,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -373745623, now seen corresponding path program 1 times [2023-11-29 01:20:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:20:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741595480] [2023-11-29 01:20:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:44,649 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 01:20:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:20:44,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:20:44,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:20:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:45,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-29 01:20:45,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:45,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:20:45,623 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:20:45,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:20:45,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:20:45,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:20:45,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:20:45,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:20:45,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:20:46,296 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:46,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:20:46,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:20:46,396 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:46,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:20:46,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:20:46,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:20:46,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:20:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:46,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:46,576 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4521) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:20:46,612 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_4521) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))))) is different from false [2023-11-29 01:20:47,979 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4613))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4614) .cse0 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4521) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4614) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-11-29 01:20:47,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:20:47,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741595480] [2023-11-29 01:20:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741595480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:47,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1512510064] [2023-11-29 01:20:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:47,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:47,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:20:47,991 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:20:47,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-11-29 01:22:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:26,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 01:22:26,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:26,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:22:27,176 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:22:27,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:22:27,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:22:27,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:22:27,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:22:27,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:22:27,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:22:27,916 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:22:27,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:22:27,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:22:28,066 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:22:28,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:22:28,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:22:28,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:22:28,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:22:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:22:28,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:28,147 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-29 01:22:28,177 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:22:29,452 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5159) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5158))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5159) .cse2 v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:22:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1512510064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:29,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:29,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:22:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466925907] [2023-11-29 01:22:29,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:22:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:22:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:22:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-29 01:22:29,463 INFO L87 Difference]: Start difference. First operand 1453 states and 1617 transitions. Second operand has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:22:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:45,133 INFO L93 Difference]: Finished difference Result 1806 states and 1939 transitions. [2023-11-29 01:22:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:22:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2023-11-29 01:22:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:45,137 INFO L225 Difference]: With dead ends: 1806 [2023-11-29 01:22:45,137 INFO L226 Difference]: Without dead ends: 1806 [2023-11-29 01:22:45,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-29 01:22:45,138 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1822 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 8411 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 8444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 8411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:45,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 4298 Invalid, 8444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 8411 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-11-29 01:22:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2023-11-29 01:22:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1452. [2023-11-29 01:22:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 834 states have (on average 1.8968824940047961) internal successors, (1582), 1441 states have internal predecessors, (1582), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:22:45,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1616 transitions. [2023-11-29 01:22:45,159 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1616 transitions. Word has length 105 [2023-11-29 01:22:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:45,160 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1616 transitions. [2023-11-29 01:22:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:22:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1616 transitions. [2023-11-29 01:22:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:22:45,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:45,161 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:45,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-11-29 01:22:45,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:22:45,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:22:45,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:22:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1609960168, now seen corresponding path program 1 times [2023-11-29 01:22:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:22:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543045237] [2023-11-29 01:22:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:45,563 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 01:22:45,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:22:45,564 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:22:45,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:22:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:46,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 01:22:46,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:46,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:22:46,586 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:22:46,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:22:46,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:22:46,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:22:47,402 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:22:47,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:22:47,483 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:22:47,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:22:47,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:22:47,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:22:47,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:22:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:22:47,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:51,692 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5581) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:22:51,705 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5580))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:22:51,718 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5580))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:22:52,108 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5627))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5580)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 01:22:52,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:22:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543045237] [2023-11-29 01:22:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543045237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [197473647] [2023-11-29 01:22:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:52,112 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:22:52,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:22:52,113 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:22:52,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 01:23:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:18,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:23:18,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:18,665 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:23:18,665 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 14 treesize of output 20 [2023-11-29 01:23:19,095 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:23:19,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:23:19,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:23:19,809 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:23:19,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:23:19,996 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:23:19,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:23:20,116 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:23:20,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:23:20,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:23:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:23:20,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:24,267 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6047 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6047))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:23:24,281 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6047 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6047))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:23:24,730 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-11-29 01:23:24,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-11-29 01:23:24,742 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6047 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6094))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6047)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5581)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-11-29 01:23:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [197473647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:24,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2023-11-29 01:23:24,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228319682] [2023-11-29 01:23:24,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:24,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:23:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:23:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:23:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=575, Unknown=9, NotChecked=378, Total=1056 [2023-11-29 01:23:24,747 INFO L87 Difference]: Start difference. First operand 1452 states and 1616 transitions. Second operand has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:23:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:54,673 INFO L93 Difference]: Finished difference Result 2725 states and 2947 transitions. [2023-11-29 01:23:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:23:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2023-11-29 01:23:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:54,677 INFO L225 Difference]: With dead ends: 2725 [2023-11-29 01:23:54,677 INFO L226 Difference]: Without dead ends: 2725 [2023-11-29 01:23:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=228, Invalid=1431, Unknown=9, NotChecked=588, Total=2256 [2023-11-29 01:23:54,678 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1948 mSDsluCounter, 11253 mSDsCounter, 0 mSdLazyCounter, 15062 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 11995 SdHoareTripleChecker+Invalid, 15155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 15062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:54,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 11995 Invalid, 15155 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 15062 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time] [2023-11-29 01:23:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2023-11-29 01:23:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1451. [2023-11-29 01:23:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 834 states have (on average 1.89568345323741) internal successors, (1581), 1440 states have internal predecessors, (1581), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:23:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1615 transitions. [2023-11-29 01:23:54,694 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1615 transitions. Word has length 107 [2023-11-29 01:23:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:54,695 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1615 transitions. [2023-11-29 01:23:54,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:23:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1615 transitions. [2023-11-29 01:23:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:23:54,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:54,696 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:54,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-29 01:23:54,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:55,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:23:55,096 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:23:55,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1609960169, now seen corresponding path program 1 times [2023-11-29 01:23:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:23:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778275861] [2023-11-29 01:23:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:55,098 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 01:23:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:23:55,098 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:23:55,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:23:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:56,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-29 01:23:56,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:56,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:23:56,183 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:23:56,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:23:56,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:23:56,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:23:56,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:23:56,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:23:56,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:23:57,012 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:57,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:23:57,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:23:57,145 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:57,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:23:57,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:23:57,248 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:57,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:23:57,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:23:57,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:23:57,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:23:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:23:57,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:57,462 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 01:23:57,494 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-11-29 01:23:57,589 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6561))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6562) .cse0 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6562) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6561) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-11-29 01:24:00,699 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6655))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_6561))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6656) .cse0 v_ArrVal_6562) .cse1 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_6655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6655))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6656) .cse6 v_ArrVal_6562) (select (select (store .cse7 .cse6 v_ArrVal_6561) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6563))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 01:24:00,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:24:00,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778275861] [2023-11-29 01:24:00,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778275861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:00,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1111265277] [2023-11-29 01:24:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:00,709 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:24:00,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:24:00,710 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:24:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 01:24:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:30,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-29 01:24:30,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:30,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:24:30,595 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:24:30,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:24:30,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:24:30,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:24:30,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:24:30,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:24:30,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:24:31,897 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:31,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:24:31,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:24:32,142 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:32,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:24:32,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:24:32,309 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:32,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:24:32,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:24:32,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:24:32,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:24:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:24:32,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:32,422 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:24:32,459 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:24:32,562 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7124) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7123) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7123))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7124) .cse2 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:24:32,705 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7124) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7123) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7123))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7124) .cse3 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 01:24:34,971 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7218 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7217 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7217))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7123))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7218) .cse0 v_ArrVal_7124) .cse1 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7218 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7217 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7217))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7218) .cse6 v_ArrVal_7124) (select (select (store .cse7 .cse6 v_ArrVal_7123) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7126))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 01:24:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1111265277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:34,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:34,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 01:24:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30307280] [2023-11-29 01:24:34,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:24:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:24:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:24:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=315, Unknown=13, NotChecked=396, Total=812 [2023-11-29 01:24:34,987 INFO L87 Difference]: Start difference. First operand 1451 states and 1615 transitions. Second operand has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:24:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:57,817 INFO L93 Difference]: Finished difference Result 1804 states and 1937 transitions. [2023-11-29 01:24:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:24:57,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2023-11-29 01:24:57,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:57,820 INFO L225 Difference]: With dead ends: 1804 [2023-11-29 01:24:57,821 INFO L226 Difference]: Without dead ends: 1804 [2023-11-29 01:24:57,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=146, Invalid=527, Unknown=13, NotChecked=504, Total=1190 [2023-11-29 01:24:57,821 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1117 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 6852 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3790 SdHoareTripleChecker+Invalid, 6871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:57,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3790 Invalid, 6871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 6852 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2023-11-29 01:24:57,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-11-29 01:24:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1450. [2023-11-29 01:24:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 834 states have (on average 1.894484412470024) internal successors, (1580), 1439 states have internal predecessors, (1580), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:24:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1614 transitions. [2023-11-29 01:24:57,835 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1614 transitions. Word has length 107 [2023-11-29 01:24:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:57,835 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1614 transitions. [2023-11-29 01:24:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:24:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1614 transitions. [2023-11-29 01:24:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 01:24:57,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:57,836 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:57,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:58,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-11-29 01:24:58,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:24:58,237 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:24:58,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 985742275, now seen corresponding path program 1 times [2023-11-29 01:24:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:24:58,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29088241] [2023-11-29 01:24:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:24:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:24:58,239 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:24:58,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:24:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:59,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 01:24:59,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:59,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:24:59,734 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:24:59,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:24:59,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:24:59,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:25:01,267 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:01,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:01,432 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:01,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:01,575 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:01,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:01,715 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:01,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:01,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:25:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:25:01,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:01,912 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7656) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2023-11-29 01:25:02,170 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7655))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:02,188 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7655))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:02,209 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7654 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7654))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7655)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:25:02,233 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7654 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7654))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7655)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:25:02,752 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7654 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7702))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7654)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7655)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:02,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:25:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29088241] [2023-11-29 01:25:02,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29088241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:02,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138790229] [2023-11-29 01:25:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:02,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:25:02,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:25:02,759 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:25:02,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-29 01:25:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:34,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 01:25:34,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:34,161 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:25:34,161 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 14 treesize of output 20 [2023-11-29 01:25:34,912 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:25:34,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:25:34,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:25:36,070 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:36,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:25:36,379 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:36,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:25:36,563 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:36,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:25:36,738 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:36,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:25:36,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:25:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:25:36,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:41,265 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8138))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 01:25:41,283 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8138))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 01:25:41,305 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8137))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8138)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:25:41,329 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8137))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8138)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:41,806 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2023-11-29 01:25:41,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 108 [2023-11-29 01:25:41,825 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8185))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8137)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8138)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7656)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-29 01:25:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [138790229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:41,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2023-11-29 01:25:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005180176] [2023-11-29 01:25:41,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:25:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:25:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:25:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=717, Unknown=14, NotChecked=704, Total=1560 [2023-11-29 01:25:41,831 INFO L87 Difference]: Start difference. First operand 1450 states and 1614 transitions. Second operand has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:26:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:26:25,330 INFO L93 Difference]: Finished difference Result 2721 states and 2943 transitions. [2023-11-29 01:26:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:26:25,331 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 109 [2023-11-29 01:26:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:26:25,336 INFO L225 Difference]: With dead ends: 2721 [2023-11-29 01:26:25,336 INFO L226 Difference]: Without dead ends: 2721 [2023-11-29 01:26:25,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=279, Invalid=1731, Unknown=14, NotChecked=1056, Total=3080 [2023-11-29 01:26:25,337 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 3325 mSDsluCounter, 10178 mSDsCounter, 0 mSdLazyCounter, 13688 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3348 SdHoareTripleChecker+Valid, 10919 SdHoareTripleChecker+Invalid, 13812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 13688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:26:25,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3348 Valid, 10919 Invalid, 13812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 13688 Invalid, 0 Unknown, 0 Unchecked, 42.0s Time] [2023-11-29 01:26:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2023-11-29 01:26:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1449. [2023-11-29 01:26:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 834 states have (on average 1.8932853717026379) internal successors, (1579), 1438 states have internal predecessors, (1579), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 01:26:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1613 transitions. [2023-11-29 01:26:25,353 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1613 transitions. Word has length 109 [2023-11-29 01:26:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:26:25,353 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1613 transitions. [2023-11-29 01:26:25,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:26:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1613 transitions. [2023-11-29 01:26:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 01:26:25,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:26:25,354 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:26:25,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-11-29 01:26:25,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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)] Ended with exit code 0 [2023-11-29 01:26:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:26:25,755 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:26:25,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:26:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 985742276, now seen corresponding path program 1 times [2023-11-29 01:26:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:26:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999362565] [2023-11-29 01:26:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:25,756 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 01:26:25,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:26:25,757 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:26:25,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/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 01:26:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:27,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-29 01:26:27,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:27,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:26:27,368 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:26:27,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:26:27,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:26:27,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:26:27,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-11-29 01:26:27,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:26:27,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:26:28,700 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:26:28,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:26:28,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:26:28,881 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:26:28,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:26:28,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:26:29,034 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:26:29,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:26:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:26:29,177 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:26:29,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:26:29,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:26:29,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:26:29,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-11-29 01:26:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:26:29,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:29,482 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2023-11-29 01:26:29,523 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:26:29,700 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8669) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8670))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8669) .cse2 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:26:29,760 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8670))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8669) .cse1 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8669) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-11-29 01:26:30,175 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8667))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8670))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8668) .cse0 v_ArrVal_8669) .cse1 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8667))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8668) .cse6 v_ArrVal_8669) (select (select (store .cse7 .cse6 v_ArrVal_8670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8671))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-11-29 01:26:30,459 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8667))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8670))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8668) .cse1 v_ArrVal_8669) .cse2 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8667))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8668) .cse7 v_ArrVal_8669) (select (select (store .cse8 .cse7 v_ArrVal_8670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8671))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2023-11-29 01:26:36,364 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8763 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8763))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8667))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8764) .cse1 v_ArrVal_8668) .cse2 v_ArrVal_8669) (select (select (store .cse3 .cse2 v_ArrVal_8670) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8671))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8763 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8763))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8667))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8670))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8764) .cse6 v_ArrVal_8668) .cse7 v_ArrVal_8669) .cse8 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-11-29 01:26:36,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:26:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999362565] [2023-11-29 01:26:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999362565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412012547] [2023-11-29 01:26:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:26:36,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:26:36,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:26:36,401 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:26:36,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fff65178-3d3e-4745-a9a1-3760d7f4d84b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-11-29 01:27:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:20,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 01:27:20,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:20,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:27:22,394 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 01:27:22,556 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:27:22,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:27:22,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-29 01:27:22,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:27:24,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:27:24,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:27:28,433 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:28,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:28,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:29,551 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:29,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:29,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:30,320 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:30,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:31,073 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:31,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:31,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:31,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:27:31,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:27:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:27:31,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:31,456 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:27:31,562 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:27:31,705 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9249))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9248) .cse0 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9248) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9249) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-11-29 01:27:31,857 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_9248) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_9249) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_9249))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_9248) .cse3 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 01:27:32,512 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9247))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_9249))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9246) .cse0 v_ArrVal_9248) .cse1 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9247))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9246) .cse6 v_ArrVal_9248) (select (select (store .cse7 .cse6 v_ArrVal_9249) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9250))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-11-29 01:27:33,715 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_9247))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_9249))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_9246) .cse1 v_ArrVal_9248) .cse2 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_9247))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_9246) .cse7 v_ArrVal_9248) (select (select (store .cse8 .cse7 v_ArrVal_9249) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9250))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2023-11-29 01:27:41,827 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9343 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9343))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_9247))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9342) .cse1 v_ArrVal_9246) .cse2 v_ArrVal_9248) (select (select (store .cse3 .cse2 v_ArrVal_9249) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9250))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9343 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9251 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9250 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9249 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9248 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9343))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_9247))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_9249))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9342) .cse6 v_ArrVal_9246) .cse7 v_ArrVal_9248) .cse8 v_ArrVal_9250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_9251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-11-29 01:27:41,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1412012547] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:41,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:27:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-29 01:27:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576996737] [2023-11-29 01:27:41,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:27:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:27:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:27:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=14, NotChecked=714, Total=1190 [2023-11-29 01:27:41,868 INFO L87 Difference]: Start difference. First operand 1449 states and 1613 transitions. Second operand has 19 states, 16 states have (on average 7.75) internal successors, (124), 19 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)