./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:42:58,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:42:58,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-28 23:42:58,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:42:58,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:42:58,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:42:58,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:42:58,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:42:58,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:42:58,801 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:42:58,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:42:58,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:42:58,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:42:58,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:42:58,804 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:42:58,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:42:58,806 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:42:58,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:42:58,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:42:58,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:42:58,808 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-28 23:42:58,809 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-28 23:42:58,810 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-28 23:42:58,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:42:58,811 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 23:42:58,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:42:58,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:42:58,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:42:58,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:42:58,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:42:58,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:42:58,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:42:58,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:42:58,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:42:58,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:42:58,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:42:58,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:42:58,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:42:58,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:42:58,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:42:58,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:42:58,818 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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 [2023-11-28 23:42:59,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:42:59,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:42:59,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:42:59,138 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:42:59,139 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:42:59,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2023-11-28 23:43:02,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:43:02,679 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:43:02,680 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2023-11-28 23:43:02,700 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/67306b76d/abfebf30ef774d2081ddab8f75145c8b/FLAG223562bbd [2023-11-28 23:43:02,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/67306b76d/abfebf30ef774d2081ddab8f75145c8b [2023-11-28 23:43:02,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:43:02,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:43:02,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:02,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:43:02,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:43:02,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:02" (1/1) ... [2023-11-28 23:43:02,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bb4f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:02, skipping insertion in model container [2023-11-28 23:43:02,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:02" (1/1) ... [2023-11-28 23:43:02,798 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:43:03,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:03,363 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) [2023-11-28 23:43:03,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57bcb7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:03, skipping insertion in model container [2023-11-28 23:43:03,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:03,365 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-28 23:43:03,367 INFO L158 Benchmark]: Toolchain (without parser) took 650.51ms. Allocated memory is still 182.5MB. Free memory was 147.1MB in the beginning and 140.4MB in the end (delta: 6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 23:43:03,367 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 94.8MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:43:03,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.45ms. Allocated memory is still 182.5MB. Free memory was 147.1MB in the beginning and 140.4MB in the end (delta: 6.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 23:43:03,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory was 94.9MB in the beginning and 94.8MB in the end (delta: 126.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.45ms. Allocated memory is still 182.5MB. Free memory was 147.1MB in the beginning and 140.4MB in the end (delta: 6.7MB). Peak memory consumption was 10.5MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:43:05,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:43:05,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-28 23:43:05,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:43:05,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:43:05,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:43:05,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:43:05,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:43:05,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:43:05,558 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:43:05,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:43:05,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:43:05,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:43:05,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:43:05,561 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:43:05,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:43:05,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:43:05,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:43:05,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:43:05,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:43:05,565 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-28 23:43:05,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-28 23:43:05,566 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-28 23:43:05,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:43:05,567 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-28 23:43:05,568 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-28 23:43:05,568 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-28 23:43:05,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:43:05,569 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:43:05,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:43:05,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:43:05,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:43:05,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:43:05,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:43:05,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:43:05,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:43:05,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:43:05,573 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-28 23:43:05,573 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-28 23:43:05,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:43:05,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:43:05,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:43:05,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:43:05,574 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-28 23:43:05,575 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fff6eb11b5ece9f2655331435003a1af77ee5ac869f244677acc531eb435a19 [2023-11-28 23:43:05,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:43:05,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:43:05,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:43:05,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:43:05,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:43:05,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2023-11-28 23:43:08,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:43:09,348 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:43:09,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-2.i [2023-11-28 23:43:09,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/7dada95ca/e33aa51070964ce09b33e12ece31579b/FLAG87b420a7a [2023-11-28 23:43:09,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/data/7dada95ca/e33aa51070964ce09b33e12ece31579b [2023-11-28 23:43:09,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:43:09,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:43:09,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:09,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:43:09,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:43:09,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:09" (1/1) ... [2023-11-28 23:43:09,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff1c752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:09, skipping insertion in model container [2023-11-28 23:43:09,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:09" (1/1) ... [2023-11-28 23:43:09,480 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:43:10,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:10,086 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-28 23:43:10,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:43:10,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:10,203 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:43:10,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:43:10,340 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:43:10,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10 WrapperNode [2023-11-28 23:43:10,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:43:10,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:43:10,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:43:10,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:43:10,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,490 INFO L138 Inliner]: procedures = 180, calls = 401, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1340 [2023-11-28 23:43:10,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:43:10,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:43:10,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:43:10,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:43:10,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,684 INFO L175 MemorySlicer]: Split 367 memory accesses to 4 slices as follows [2, 5, 5, 355]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 92 writes are split as follows [0, 1, 1, 90]. [2023-11-28 23:43:10,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:43:10,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:43:10,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:43:10,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:43:10,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (1/1) ... [2023-11-28 23:43:10,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:43:10,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:10,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:43:10,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-28 23:43:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-28 23:43:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-28 23:43:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-28 23:43:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 23:43:10,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 23:43:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-28 23:43:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-28 23:43:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-28 23:43:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-28 23:43:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-28 23:43:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-28 23:43:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-28 23:43:10,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-28 23:43:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-28 23:43:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-28 23:43:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-28 23:43:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-28 23:43:10,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:43:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:43:11,180 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:43:11,183 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:43:11,187 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-28 23:43:11,250 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-28 23:43:11,277 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-28 23:43:11,303 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-28 23:43:17,719 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:43:17,947 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:43:17,948 INFO L309 CfgBuilder]: Removed 69 assume(true) statements. [2023-11-28 23:43:17,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:17 BoogieIcfgContainer [2023-11-28 23:43:17,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:43:17,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:43:17,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:43:17,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:43:17,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:43:09" (1/3) ... [2023-11-28 23:43:17,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c71575e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:43:17, skipping insertion in model container [2023-11-28 23:43:17,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:10" (2/3) ... [2023-11-28 23:43:17,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c71575e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:43:17, skipping insertion in model container [2023-11-28 23:43:17,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:17" (3/3) ... [2023-11-28 23:43:17,960 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-2.i [2023-11-28 23:43:17,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:43:17,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2023-11-28 23:43:18,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:43:18,070 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;@59fa18ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:43:18,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2023-11-28 23:43:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 574 states have (on average 2.559233449477352) internal successors, (1469), 1331 states have internal predecessors, (1469), 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) [2023-11-28 23:43:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-28 23:43:18,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:18,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-28 23:43:18,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:18,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 71454806, now seen corresponding path program 1 times [2023-11-28 23:43:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089367337] [2023-11-28 23:43:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:18,107 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 [2023-11-28 23:43:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:18,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:18,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:18,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:43:18,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:18,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:18,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089367337] [2023-11-28 23:43:18,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089367337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:18,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:18,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:43:18,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303302642] [2023-11-28 23:43:18,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:18,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:43:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:43:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:43:18,419 INFO L87 Difference]: Start difference. First operand has 1340 states, 574 states have (on average 2.559233449477352) internal successors, (1469), 1331 states have internal predecessors, (1469), 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) [2023-11-28 23:43:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:19,498 INFO L93 Difference]: Finished difference Result 1321 states and 1404 transitions. [2023-11-28 23:43:19,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:43:19,502 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 [2023-11-28 23:43:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:19,527 INFO L225 Difference]: With dead ends: 1321 [2023-11-28 23:43:19,527 INFO L226 Difference]: Without dead ends: 1320 [2023-11-28 23:43:19,528 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 [2023-11-28 23:43:19,532 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:19,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1261 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 23:43:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-28 23:43:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2023-11-28 23:43:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 565 states have (on average 2.426548672566372) internal successors, (1371), 1311 states have internal predecessors, (1371), 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) [2023-11-28 23:43:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1403 transitions. [2023-11-28 23:43:19,633 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1403 transitions. Word has length 4 [2023-11-28 23:43:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:19,633 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1403 transitions. [2023-11-28 23:43:19,633 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) [2023-11-28 23:43:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1403 transitions. [2023-11-28 23:43:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-28 23:43:19,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:19,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-28 23:43:19,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:19,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:19,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:19,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 71454868, now seen corresponding path program 1 times [2023-11-28 23:43:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:19,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249735608] [2023-11-28 23:43:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:19,837 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 [2023-11-28 23:43:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:19,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:19,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:19,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:19,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:20,026 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 [2023-11-28 23:43:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:20,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:20,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:20,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249735608] [2023-11-28 23:43:20,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249735608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:20,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:20,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:43:20,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16386620] [2023-11-28 23:43:20,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:43:20,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:43:20,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:43:20,052 INFO L87 Difference]: Start difference. First operand 1320 states and 1403 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) [2023-11-28 23:43:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:22,824 INFO L93 Difference]: Finished difference Result 1350 states and 1446 transitions. [2023-11-28 23:43:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:43:22,825 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 [2023-11-28 23:43:22,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:22,834 INFO L225 Difference]: With dead ends: 1350 [2023-11-28 23:43:22,834 INFO L226 Difference]: Without dead ends: 1350 [2023-11-28 23:43:22,835 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 [2023-11-28 23:43:22,836 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1042 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:22,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 838 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-28 23:43:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-11-28 23:43:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1293. [2023-11-28 23:43:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 631 states have (on average 2.223454833597464) internal successors, (1403), 1284 states have internal predecessors, (1403), 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) [2023-11-28 23:43:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1435 transitions. [2023-11-28 23:43:22,883 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1435 transitions. Word has length 4 [2023-11-28 23:43:22,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:22,883 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1435 transitions. [2023-11-28 23:43:22,883 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) [2023-11-28 23:43:22,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1435 transitions. [2023-11-28 23:43:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-28 23:43:22,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:22,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-28 23:43:22,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-28 23:43:23,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:23,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:23,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 71454869, now seen corresponding path program 1 times [2023-11-28 23:43:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457206148] [2023-11-28 23:43:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:23,089 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 [2023-11-28 23:43:23,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:23,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:23,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:23,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:43:23,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:23,220 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 [2023-11-28 23:43:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:23,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:23,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457206148] [2023-11-28 23:43:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457206148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:23,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:23,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:43:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238375290] [2023-11-28 23:43:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:43:23,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:43:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:43:23,246 INFO L87 Difference]: Start difference. First operand 1293 states and 1435 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) [2023-11-28 23:43:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:27,728 INFO L93 Difference]: Finished difference Result 1565 states and 1727 transitions. [2023-11-28 23:43:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:43:27,729 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 [2023-11-28 23:43:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:27,740 INFO L225 Difference]: With dead ends: 1565 [2023-11-28 23:43:27,740 INFO L226 Difference]: Without dead ends: 1565 [2023-11-28 23:43:27,740 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 [2023-11-28 23:43:27,742 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 456 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:27,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1462 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-28 23:43:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-11-28 23:43:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1416. [2023-11-28 23:43:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 764 states have (on average 2.193717277486911) internal successors, (1676), 1407 states have internal predecessors, (1676), 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) [2023-11-28 23:43:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1708 transitions. [2023-11-28 23:43:27,793 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1708 transitions. Word has length 4 [2023-11-28 23:43:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 1708 transitions. [2023-11-28 23:43:27,794 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) [2023-11-28 23:43:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1708 transitions. [2023-11-28 23:43:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-28 23:43:27,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:27,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-28 23:43:27,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:27,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:27,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:27,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:27,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2078175095, now seen corresponding path program 1 times [2023-11-28 23:43:27,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:27,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845756849] [2023-11-28 23:43:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:27,999 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 [2023-11-28 23:43:27,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:28,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:28,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:43:28,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:28,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:28,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:28,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845756849] [2023-11-28 23:43:28,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845756849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:28,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:28,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:43:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124952483] [2023-11-28 23:43:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:43:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:43:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:43:28,130 INFO L87 Difference]: Start difference. First operand 1416 states and 1708 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) [2023-11-28 23:43:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:30,020 INFO L93 Difference]: Finished difference Result 2605 states and 3158 transitions. [2023-11-28 23:43:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:43:30,022 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 [2023-11-28 23:43:30,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:30,034 INFO L225 Difference]: With dead ends: 2605 [2023-11-28 23:43:30,034 INFO L226 Difference]: Without dead ends: 2605 [2023-11-28 23:43:30,034 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 [2023-11-28 23:43:30,035 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 1029 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:30,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2710 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-28 23:43:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-11-28 23:43:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 1417. [2023-11-28 23:43:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 765 states have (on average 2.1921568627450982) internal successors, (1677), 1408 states have internal predecessors, (1677), 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) [2023-11-28 23:43:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1709 transitions. [2023-11-28 23:43:30,087 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1709 transitions. Word has length 5 [2023-11-28 23:43:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:30,087 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 1709 transitions. [2023-11-28 23:43:30,087 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) [2023-11-28 23:43:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1709 transitions. [2023-11-28 23:43:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-28 23:43:30,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:30,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:30,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:30,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:30,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:30,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash 9598878, now seen corresponding path program 1 times [2023-11-28 23:43:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710462970] [2023-11-28 23:43:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:30,295 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 [2023-11-28 23:43:30,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:30,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:30,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:43:30,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:30,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:30,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:30,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710462970] [2023-11-28 23:43:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710462970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:43:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513436376] [2023-11-28 23:43:30,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:30,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:43:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:43:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:43:30,517 INFO L87 Difference]: Start difference. First operand 1417 states and 1709 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) [2023-11-28 23:43:31,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:31,629 INFO L93 Difference]: Finished difference Result 1378 states and 1669 transitions. [2023-11-28 23:43:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:43:31,631 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 [2023-11-28 23:43:31,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:31,638 INFO L225 Difference]: With dead ends: 1378 [2023-11-28 23:43:31,638 INFO L226 Difference]: Without dead ends: 1378 [2023-11-28 23:43:31,638 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 [2023-11-28 23:43:31,639 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 70 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:31,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2169 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 23:43:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2023-11-28 23:43:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1378. [2023-11-28 23:43:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 750 states have (on average 2.1826666666666665) internal successors, (1637), 1369 states have internal predecessors, (1637), 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) [2023-11-28 23:43:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1669 transitions. [2023-11-28 23:43:31,672 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1669 transitions. Word has length 10 [2023-11-28 23:43:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:31,672 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1669 transitions. [2023-11-28 23:43:31,672 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) [2023-11-28 23:43:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1669 transitions. [2023-11-28 23:43:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-28 23:43:31,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:31,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:31,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:31,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:31,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:31,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash 634583864, now seen corresponding path program 1 times [2023-11-28 23:43:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085000945] [2023-11-28 23:43:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:31,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:31,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:31,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:31,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:32,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:32,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:32,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:32,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085000945] [2023-11-28 23:43:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085000945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:32,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:43:32,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937827521] [2023-11-28 23:43:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:32,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:43:32,061 INFO L87 Difference]: Start difference. First operand 1378 states and 1669 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) [2023-11-28 23:43:33,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:33,482 INFO L93 Difference]: Finished difference Result 1364 states and 1648 transitions. [2023-11-28 23:43:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:33,484 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 [2023-11-28 23:43:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:33,489 INFO L225 Difference]: With dead ends: 1364 [2023-11-28 23:43:33,489 INFO L226 Difference]: Without dead ends: 1364 [2023-11-28 23:43:33,490 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 [2023-11-28 23:43:33,490 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 58 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:33,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3210 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 23:43:33,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-11-28 23:43:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1363. [2023-11-28 23:43:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 749 states have (on average 2.156208277703605) internal successors, (1615), 1354 states have internal predecessors, (1615), 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) [2023-11-28 23:43:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1647 transitions. [2023-11-28 23:43:33,522 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1647 transitions. Word has length 12 [2023-11-28 23:43:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:33,523 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1647 transitions. [2023-11-28 23:43:33,523 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) [2023-11-28 23:43:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1647 transitions. [2023-11-28 23:43:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-28 23:43:33,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:33,524 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] [2023-11-28 23:43:33,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-28 23:43:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:33,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:33,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1624158822, now seen corresponding path program 1 times [2023-11-28 23:43:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:33,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8488272] [2023-11-28 23:43:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:33,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:33,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:33,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:33,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:43:33,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:33,871 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 [2023-11-28 23:43:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:33,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:33,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8488272] [2023-11-28 23:43:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8488272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:43:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903070765] [2023-11-28 23:43:33,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:43:33,954 INFO L87 Difference]: Start difference. First operand 1363 states and 1647 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) [2023-11-28 23:43:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:36,975 INFO L93 Difference]: Finished difference Result 1416 states and 1654 transitions. [2023-11-28 23:43:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:36,976 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 [2023-11-28 23:43:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:36,981 INFO L225 Difference]: With dead ends: 1416 [2023-11-28 23:43:36,981 INFO L226 Difference]: Without dead ends: 1416 [2023-11-28 23:43:36,982 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 [2023-11-28 23:43:36,982 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 977 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:36,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1267 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-28 23:43:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-11-28 23:43:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1359. [2023-11-28 23:43:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 749 states have (on average 2.15086782376502) internal successors, (1611), 1350 states have internal predecessors, (1611), 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) [2023-11-28 23:43:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1643 transitions. [2023-11-28 23:43:37,004 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1643 transitions. Word has length 26 [2023-11-28 23:43:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:37,004 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1643 transitions. [2023-11-28 23:43:37,005 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) [2023-11-28 23:43:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1643 transitions. [2023-11-28 23:43:37,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-28 23:43:37,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:37,005 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] [2023-11-28 23:43:37,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:37,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:37,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:37,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1624158823, now seen corresponding path program 1 times [2023-11-28 23:43:37,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:37,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547054007] [2023-11-28 23:43:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:37,207 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 [2023-11-28 23:43:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:37,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:37,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:37,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:43:37,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:37,382 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 [2023-11-28 23:43:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:37,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:37,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547054007] [2023-11-28 23:43:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547054007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:43:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641253872] [2023-11-28 23:43:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:43:37,556 INFO L87 Difference]: Start difference. First operand 1359 states and 1643 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) [2023-11-28 23:43:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:42,352 INFO L93 Difference]: Finished difference Result 1504 states and 1658 transitions. [2023-11-28 23:43:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:42,353 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 [2023-11-28 23:43:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:42,358 INFO L225 Difference]: With dead ends: 1504 [2023-11-28 23:43:42,358 INFO L226 Difference]: Without dead ends: 1504 [2023-11-28 23:43:42,358 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 [2023-11-28 23:43:42,359 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 393 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:42,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1938 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-28 23:43:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-11-28 23:43:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1355. [2023-11-28 23:43:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 749 states have (on average 2.145527369826435) internal successors, (1607), 1346 states have internal predecessors, (1607), 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) [2023-11-28 23:43:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1639 transitions. [2023-11-28 23:43:42,389 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1639 transitions. Word has length 26 [2023-11-28 23:43:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:42,390 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 1639 transitions. [2023-11-28 23:43:42,390 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) [2023-11-28 23:43:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1639 transitions. [2023-11-28 23:43:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:43:42,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:42,392 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] [2023-11-28 23:43:42,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-28 23:43:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:42,593 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:42,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash 869234144, now seen corresponding path program 1 times [2023-11-28 23:43:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:42,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645978532] [2023-11-28 23:43:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:42,594 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 [2023-11-28 23:43:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:42,595 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:42,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:42,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:42,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:42,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:42,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645978532] [2023-11-28 23:43:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645978532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:43:42,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537962615] [2023-11-28 23:43:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:43:42,829 INFO L87 Difference]: Start difference. First operand 1355 states and 1639 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) [2023-11-28 23:43:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:44,206 INFO L93 Difference]: Finished difference Result 1349 states and 1629 transitions. [2023-11-28 23:43:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:44,208 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 [2023-11-28 23:43:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:44,213 INFO L225 Difference]: With dead ends: 1349 [2023-11-28 23:43:44,213 INFO L226 Difference]: Without dead ends: 1349 [2023-11-28 23:43:44,213 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 [2023-11-28 23:43:44,214 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 23 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3196 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-28 23:43:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-11-28 23:43:44,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1349. [2023-11-28 23:43:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 743 states have (on average 2.149394347240915) internal successors, (1597), 1340 states have internal predecessors, (1597), 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) [2023-11-28 23:43:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1629 transitions. [2023-11-28 23:43:44,243 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1629 transitions. Word has length 42 [2023-11-28 23:43:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:44,244 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1629 transitions. [2023-11-28 23:43:44,244 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) [2023-11-28 23:43:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1629 transitions. [2023-11-28 23:43:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-28 23:43:44,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:44,246 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] [2023-11-28 23:43:44,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:44,446 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:44,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -132264064, now seen corresponding path program 1 times [2023-11-28 23:43:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:44,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303352210] [2023-11-28 23:43:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:44,447 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 [2023-11-28 23:43:44,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:44,448 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:44,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:44,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:43:44,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:44,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:44,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303352210] [2023-11-28 23:43:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303352210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:43:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496184935] [2023-11-28 23:43:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:44,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:43:44,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:43:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:43:44,980 INFO L87 Difference]: Start difference. First operand 1349 states and 1629 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) [2023-11-28 23:43:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:46,232 INFO L93 Difference]: Finished difference Result 1572 states and 1861 transitions. [2023-11-28 23:43:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:43:46,234 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 [2023-11-28 23:43:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:46,240 INFO L225 Difference]: With dead ends: 1572 [2023-11-28 23:43:46,241 INFO L226 Difference]: Without dead ends: 1572 [2023-11-28 23:43:46,241 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 [2023-11-28 23:43:46,241 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 246 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:46,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 2112 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 23:43:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2023-11-28 23:43:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1392. [2023-11-28 23:43:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 786 states have (on average 2.0865139949109417) internal successors, (1640), 1383 states have internal predecessors, (1640), 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) [2023-11-28 23:43:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1672 transitions. [2023-11-28 23:43:46,275 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1672 transitions. Word has length 46 [2023-11-28 23:43:46,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:46,276 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1672 transitions. [2023-11-28 23:43:46,276 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) [2023-11-28 23:43:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1672 transitions. [2023-11-28 23:43:46,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-28 23:43:46,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:46,278 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] [2023-11-28 23:43:46,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:46,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:46,481 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:46,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:46,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1901175151, now seen corresponding path program 1 times [2023-11-28 23:43:46,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:46,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934323076] [2023-11-28 23:43:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:46,483 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 [2023-11-28 23:43:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:46,484 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:46,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:46,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:43:46,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:46,810 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 [2023-11-28 23:43:46,819 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 [2023-11-28 23:43:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-28 23:43:47,341 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 [2023-11-28 23:43:47,360 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:43:47,360 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 [2023-11-28 23:43:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:47,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:47,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:47,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934323076] [2023-11-28 23:43:47,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934323076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:47,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:43:47,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895695855] [2023-11-28 23:43:47,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:47,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:43:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:47,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:43:47,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:43:47,386 INFO L87 Difference]: Start difference. First operand 1392 states and 1672 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) [2023-11-28 23:43:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:50,755 INFO L93 Difference]: Finished difference Result 1364 states and 1598 transitions. [2023-11-28 23:43:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:43:50,755 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 [2023-11-28 23:43:50,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:50,761 INFO L225 Difference]: With dead ends: 1364 [2023-11-28 23:43:50,761 INFO L226 Difference]: Without dead ends: 1364 [2023-11-28 23:43:50,761 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 [2023-11-28 23:43:50,762 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 943 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:50,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 702 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-28 23:43:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-11-28 23:43:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1175. [2023-11-28 23:43:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 653 states have (on average 1.9479326186830015) internal successors, (1272), 1166 states have internal predecessors, (1272), 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) [2023-11-28 23:43:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1304 transitions. [2023-11-28 23:43:50,784 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1304 transitions. Word has length 49 [2023-11-28 23:43:50,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:50,784 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1304 transitions. [2023-11-28 23:43:50,784 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) [2023-11-28 23:43:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1304 transitions. [2023-11-28 23:43:50,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-28 23:43:50,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:50,786 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] [2023-11-28 23:43:50,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-28 23:43:50,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:50,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:50,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 798272896, now seen corresponding path program 1 times [2023-11-28 23:43:50,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:50,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112288427] [2023-11-28 23:43:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:50,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:50,992 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:50,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:51,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:43:51,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:51,227 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 [2023-11-28 23:43:51,246 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 [2023-11-28 23:43:51,270 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 [2023-11-28 23:43:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:51,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:51,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112288427] [2023-11-28 23:43:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112288427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:51,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:43:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247987640] [2023-11-28 23:43:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:51,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:43:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:51,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:43:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:43:51,284 INFO L87 Difference]: Start difference. First operand 1175 states and 1304 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) [2023-11-28 23:43:55,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:55,205 INFO L93 Difference]: Finished difference Result 1174 states and 1303 transitions. [2023-11-28 23:43:55,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:43:55,205 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 [2023-11-28 23:43:55,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:55,210 INFO L225 Difference]: With dead ends: 1174 [2023-11-28 23:43:55,210 INFO L226 Difference]: Without dead ends: 1174 [2023-11-28 23:43:55,210 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 [2023-11-28 23:43:55,210 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 3 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:55,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2556 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-28 23:43:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-11-28 23:43:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2023-11-28 23:43:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 653 states have (on average 1.9464012251148546) internal successors, (1271), 1165 states have internal predecessors, (1271), 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) [2023-11-28 23:43:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1303 transitions. [2023-11-28 23:43:55,230 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1303 transitions. Word has length 53 [2023-11-28 23:43:55,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:55,231 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1303 transitions. [2023-11-28 23:43:55,231 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) [2023-11-28 23:43:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1303 transitions. [2023-11-28 23:43:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-28 23:43:55,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:55,232 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] [2023-11-28 23:43:55,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:43:55,437 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:43:55,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash 798272897, now seen corresponding path program 1 times [2023-11-28 23:43:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:43:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420492765] [2023-11-28 23:43:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:55,439 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 [2023-11-28 23:43:55,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:43:55,439 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:43:55,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:43:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:55,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:43:55,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:55,705 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 [2023-11-28 23:43:55,722 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 [2023-11-28 23:43:55,729 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 [2023-11-28 23:43:55,768 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 [2023-11-28 23:43:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:55,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:55,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:43:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420492765] [2023-11-28 23:43:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420492765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:43:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49444079] [2023-11-28 23:43:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:43:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:43:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:43:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:43:55,794 INFO L87 Difference]: Start difference. First operand 1174 states and 1303 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) [2023-11-28 23:44:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:00,663 INFO L93 Difference]: Finished difference Result 1173 states and 1302 transitions. [2023-11-28 23:44:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:44:00,664 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 [2023-11-28 23:44:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:00,669 INFO L225 Difference]: With dead ends: 1173 [2023-11-28 23:44:00,669 INFO L226 Difference]: Without dead ends: 1173 [2023-11-28 23:44:00,669 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 [2023-11-28 23:44:00,670 INFO L413 NwaCegarLoop]: 1000 mSDtfsCounter, 1 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:00,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2593 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-28 23:44:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-11-28 23:44:00,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2023-11-28 23:44:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 652 states have (on average 1.9478527607361964) internal successors, (1270), 1164 states have internal predecessors, (1270), 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) [2023-11-28 23:44:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1302 transitions. [2023-11-28 23:44:00,683 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1302 transitions. Word has length 53 [2023-11-28 23:44:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:00,684 INFO L495 AbstractCegarLoop]: Abstraction has 1173 states and 1302 transitions. [2023-11-28 23:44:00,684 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) [2023-11-28 23:44:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1302 transitions. [2023-11-28 23:44:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-28 23:44:00,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:00,684 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] [2023-11-28 23:44:00,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:00,885 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:00,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash 846185892, now seen corresponding path program 1 times [2023-11-28 23:44:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72851300] [2023-11-28 23:44:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:00,886 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 [2023-11-28 23:44:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:00,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:00,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:01,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:44:01,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:01,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:44:01,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72851300] [2023-11-28 23:44:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72851300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:44:01,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:44:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:44:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249570436] [2023-11-28 23:44:01,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:44:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:44:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:44:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:44:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:44:01,153 INFO L87 Difference]: Start difference. First operand 1173 states and 1302 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) [2023-11-28 23:44:02,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:02,666 INFO L93 Difference]: Finished difference Result 1175 states and 1306 transitions. [2023-11-28 23:44:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:44:02,666 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 [2023-11-28 23:44:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:02,673 INFO L225 Difference]: With dead ends: 1175 [2023-11-28 23:44:02,673 INFO L226 Difference]: Without dead ends: 1175 [2023-11-28 23:44:02,673 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 [2023-11-28 23:44:02,674 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 1 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:02,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2991 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 23:44:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-28 23:44:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2023-11-28 23:44:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 653 states have (on average 1.9479326186830015) internal successors, (1272), 1166 states have internal predecessors, (1272), 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) [2023-11-28 23:44:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1306 transitions. [2023-11-28 23:44:02,692 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1306 transitions. Word has length 59 [2023-11-28 23:44:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:02,692 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1306 transitions. [2023-11-28 23:44:02,693 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) [2023-11-28 23:44:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1306 transitions. [2023-11-28 23:44:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-28 23:44:02,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:02,693 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] [2023-11-28 23:44:02,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:02,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:02,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 960552479, now seen corresponding path program 1 times [2023-11-28 23:44:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928369326] [2023-11-28 23:44:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:02,895 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 [2023-11-28 23:44:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:02,895 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:03,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:44:03,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:03,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:03,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928369326] [2023-11-28 23:44:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928369326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:03,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:44:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-28 23:44:03,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335160834] [2023-11-28 23:44:03,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:03,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:44:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:44:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:44:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:44:03,249 INFO L87 Difference]: Start difference. First operand 1175 states and 1306 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) [2023-11-28 23:44:04,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:04,689 INFO L93 Difference]: Finished difference Result 1184 states and 1321 transitions. [2023-11-28 23:44:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:44:04,690 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 [2023-11-28 23:44:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:04,695 INFO L225 Difference]: With dead ends: 1184 [2023-11-28 23:44:04,695 INFO L226 Difference]: Without dead ends: 1184 [2023-11-28 23:44:04,695 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 [2023-11-28 23:44:04,695 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 7 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:04,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2987 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 23:44:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2023-11-28 23:44:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1183. [2023-11-28 23:44:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 660 states have (on average 1.946969696969697) internal successors, (1285), 1173 states have internal predecessors, (1285), 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) [2023-11-28 23:44:04,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1319 transitions. [2023-11-28 23:44:04,712 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1319 transitions. Word has length 60 [2023-11-28 23:44:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:04,712 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1319 transitions. [2023-11-28 23:44:04,712 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) [2023-11-28 23:44:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1319 transitions. [2023-11-28 23:44:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:44:04,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:04,713 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] [2023-11-28 23:44:04,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:04,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:04,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:04,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash -365982620, now seen corresponding path program 2 times [2023-11-28 23:44:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:04,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755349014] [2023-11-28 23:44:04,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:44:04,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:04,916 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:04,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:05,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:44:05,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:44:05,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:44:05,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:05,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:05,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755349014] [2023-11-28 23:44:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755349014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:05,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:44:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-28 23:44:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418346673] [2023-11-28 23:44:05,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 23:44:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:44:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 23:44:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:44:05,476 INFO L87 Difference]: Start difference. First operand 1183 states and 1319 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) [2023-11-28 23:44:08,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:08,455 INFO L93 Difference]: Finished difference Result 1198 states and 1345 transitions. [2023-11-28 23:44:08,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-28 23:44:08,456 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 [2023-11-28 23:44:08,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:08,460 INFO L225 Difference]: With dead ends: 1198 [2023-11-28 23:44:08,460 INFO L226 Difference]: Without dead ends: 1196 [2023-11-28 23:44:08,461 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 [2023-11-28 23:44:08,461 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 12 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:08,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5972 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-28 23:44:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-11-28 23:44:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1192. [2023-11-28 23:44:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 669 states have (on average 1.9387144992526157) internal successors, (1297), 1182 states have internal predecessors, (1297), 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) [2023-11-28 23:44:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1331 transitions. [2023-11-28 23:44:08,477 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1331 transitions. Word has length 63 [2023-11-28 23:44:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:08,477 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1331 transitions. [2023-11-28 23:44:08,477 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) [2023-11-28 23:44:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1331 transitions. [2023-11-28 23:44:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 23:44:08,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:08,478 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] [2023-11-28 23:44:08,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:08,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:08,678 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:08,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1048289924, now seen corresponding path program 3 times [2023-11-28 23:44:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845162216] [2023-11-28 23:44:08,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:44:08,679 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 [2023-11-28 23:44:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:08,680 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:08,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:09,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-28 23:44:09,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:44:09,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:44:09,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:09,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:09,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845162216] [2023-11-28 23:44:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845162216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:09,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:44:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-28 23:44:09,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633293157] [2023-11-28 23:44:09,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:09,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:44:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:44:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:44:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:44:09,995 INFO L87 Difference]: Start difference. First operand 1192 states and 1331 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) [2023-11-28 23:44:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:17,651 INFO L93 Difference]: Finished difference Result 1222 states and 1395 transitions. [2023-11-28 23:44:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-28 23:44:17,652 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 [2023-11-28 23:44:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:17,657 INFO L225 Difference]: With dead ends: 1222 [2023-11-28 23:44:17,657 INFO L226 Difference]: Without dead ends: 1219 [2023-11-28 23:44:17,658 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 [2023-11-28 23:44:17,659 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 24 mSDsluCounter, 13888 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 14883 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:17,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 14883 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-28 23:44:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-11-28 23:44:17,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1210. [2023-11-28 23:44:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 687 states have (on average 1.9213973799126638) internal successors, (1320), 1200 states have internal predecessors, (1320), 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) [2023-11-28 23:44:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1354 transitions. [2023-11-28 23:44:17,684 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1354 transitions. Word has length 69 [2023-11-28 23:44:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1354 transitions. [2023-11-28 23:44:17,685 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) [2023-11-28 23:44:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1354 transitions. [2023-11-28 23:44:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-28 23:44:17,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:17,686 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] [2023-11-28 23:44:17,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-28 23:44:17,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:17,887 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:17,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash -454916412, now seen corresponding path program 4 times [2023-11-28 23:44:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:17,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828574252] [2023-11-28 23:44:17,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 23:44:17,888 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 [2023-11-28 23:44:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:17,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:17,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:18,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 23:44:18,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:44:18,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:44:18,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:18,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:20,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:20,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828574252] [2023-11-28 23:44:20,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828574252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:20,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:44:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-28 23:44:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713048674] [2023-11-28 23:44:20,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:20,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-28 23:44:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:44:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-28 23:44:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-28 23:44:20,215 INFO L87 Difference]: Start difference. First operand 1210 states and 1354 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) [2023-11-28 23:44:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:36,497 INFO L93 Difference]: Finished difference Result 1267 states and 1464 transitions. [2023-11-28 23:44:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-28 23:44:36,498 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 [2023-11-28 23:44:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:36,503 INFO L225 Difference]: With dead ends: 1267 [2023-11-28 23:44:36,503 INFO L226 Difference]: Without dead ends: 1265 [2023-11-28 23:44:36,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2023-11-28 23:44:36,508 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 47 mSDsluCounter, 22885 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 23882 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:36,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 23882 Invalid, 6133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 6068 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-11-28 23:44:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-11-28 23:44:36,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1244. [2023-11-28 23:44:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 721 states have (on average 1.8945908460471568) internal successors, (1366), 1234 states have internal predecessors, (1366), 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) [2023-11-28 23:44:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1400 transitions. [2023-11-28 23:44:36,542 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1400 transitions. Word has length 81 [2023-11-28 23:44:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:36,543 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1400 transitions. [2023-11-28 23:44:36,543 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) [2023-11-28 23:44:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1400 transitions. [2023-11-28 23:44:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-28 23:44:36,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:36,544 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] [2023-11-28 23:44:36,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:36,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:44:36,745 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:44:36,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash 9547748, now seen corresponding path program 5 times [2023-11-28 23:44:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:44:36,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150113702] [2023-11-28 23:44:36,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 23:44:36,746 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 [2023-11-28 23:44:36,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:44:36,747 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:44:36,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:44:38,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-28 23:44:38,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:44:38,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-28 23:44:38,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:38,125 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-28 23:44:38,125 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 [2023-11-28 23:44:38,514 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-28 23:44:38,515 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 [2023-11-28 23:44:38,597 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 [2023-11-28 23:44:38,768 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 [2023-11-28 23:44:41,306 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:44:41,306 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 [2023-11-28 23:44:41,390 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 [2023-11-28 23:44:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:44:41,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:45,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:44:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150113702] [2023-11-28 23:44:45,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150113702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [383399792] [2023-11-28 23:44:45,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 23:44:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:44:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:44:45,930 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:44:45,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-28 23:45:43,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-28 23:45:43,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:45:43,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-28 23:45:43,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:45:43,323 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-28 23:45:43,323 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 [2023-11-28 23:45:43,774 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-28 23:45:43,775 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 [2023-11-28 23:45:43,828 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 [2023-11-28 23:45:44,532 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:45:44,533 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 [2023-11-28 23:45:44,610 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 [2023-11-28 23:45:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:45:44,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:45:45,136 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-11-28 23:45:45,136 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 [2023-11-28 23:45:45,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [383399792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:45:45,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:45:45,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2023-11-28 23:45:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109535486] [2023-11-28 23:45:45,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:45:45,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 23:45:45,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:45:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 23:45:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=480, Unknown=11, NotChecked=0, Total=552 [2023-11-28 23:45:45,237 INFO L87 Difference]: Start difference. First operand 1244 states and 1400 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) [2023-11-28 23:46:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:46:09,514 INFO L93 Difference]: Finished difference Result 2416 states and 2626 transitions. [2023-11-28 23:46:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-28 23:46:09,515 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 [2023-11-28 23:46:09,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:46:09,522 INFO L225 Difference]: With dead ends: 2416 [2023-11-28 23:46:09,523 INFO L226 Difference]: Without dead ends: 2412 [2023-11-28 23:46:09,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=278, Invalid=1779, Unknown=13, NotChecked=0, Total=2070 [2023-11-28 23:46:09,524 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 5263 mSDsluCounter, 7594 mSDsCounter, 0 mSdLazyCounter, 10885 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5263 SdHoareTripleChecker+Valid, 8097 SdHoareTripleChecker+Invalid, 11128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 10885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:46:09,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5263 Valid, 8097 Invalid, 11128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 10885 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2023-11-28 23:46:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2023-11-28 23:46:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1290. [2023-11-28 23:46:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 767 states have (on average 1.8409387222946545) internal successors, (1412), 1279 states have internal predecessors, (1412), 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) [2023-11-28 23:46:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1446 transitions. [2023-11-28 23:46:09,550 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1446 transitions. Word has length 103 [2023-11-28 23:46:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:46:09,550 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1446 transitions. [2023-11-28 23:46:09,551 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) [2023-11-28 23:46:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1446 transitions. [2023-11-28 23:46:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-28 23:46:09,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:46:09,552 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] [2023-11-28 23:46:09,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-11-28 23:46:09,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:46:09,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:46:09,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:46:09,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:46:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash 9547749, now seen corresponding path program 1 times [2023-11-28 23:46:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:46:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071327796] [2023-11-28 23:46:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:09,959 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 [2023-11-28 23:46:09,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:46:09,960 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:46:09,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:46:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:46:10,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-28 23:46:10,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:46:10,659 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 [2023-11-28 23:46:10,910 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 [2023-11-28 23:46:10,929 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:46:10,929 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 [2023-11-28 23:46:10,958 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 [2023-11-28 23:46:10,975 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 [2023-11-28 23:46:11,080 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 [2023-11-28 23:46:11,085 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 [2023-11-28 23:46:11,826 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:46:11,827 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 [2023-11-28 23:46:11,837 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 [2023-11-28 23:46:11,879 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 [2023-11-28 23:46:11,885 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 [2023-11-28 23:46:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:46:11,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:46:13,407 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2628 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2629 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2629) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2628) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2629 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2629) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-11-28 23:46:13,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:46:13,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071327796] [2023-11-28 23:46:13,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071327796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:46:13,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [568705350] [2023-11-28 23:46:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:46:13,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:46:13,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:46:13,415 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:46:13,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-28 23:47:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:47:49,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-28 23:47:49,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:47:49,099 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 [2023-11-28 23:47:49,385 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:47:49,385 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 [2023-11-28 23:47:49,399 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 [2023-11-28 23:47:49,417 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 [2023-11-28 23:47:49,430 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 [2023-11-28 23:47:49,495 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 [2023-11-28 23:47:49,500 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 [2023-11-28 23:47:50,201 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:47:50,201 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 [2023-11-28 23:47:50,212 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 [2023-11-28 23:47:50,248 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 [2023-11-28 23:47:50,253 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 [2023-11-28 23:47:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:47:50,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:47:51,491 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3165 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3165) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3166) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3165 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3165) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2023-11-28 23:47:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [568705350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:47:51,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:47:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-28 23:47:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122320448] [2023-11-28 23:47:51,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:47:51,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:47:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:47:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:47:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=88, Unknown=2, NotChecked=38, Total=156 [2023-11-28 23:47:51,498 INFO L87 Difference]: Start difference. First operand 1290 states and 1446 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) [2023-11-28 23:48:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:05,410 INFO L93 Difference]: Finished difference Result 1633 states and 1757 transitions. [2023-11-28 23:48:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:48:05,411 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 [2023-11-28 23:48:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:05,415 INFO L225 Difference]: With dead ends: 1633 [2023-11-28 23:48:05,416 INFO L226 Difference]: Without dead ends: 1633 [2023-11-28 23:48:05,416 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 [2023-11-28 23:48:05,416 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 706 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 5642 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 5653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:05,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3071 Invalid, 5653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5642 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-11-28 23:48:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-28 23:48:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1289. [2023-11-28 23:48:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 767 states have (on average 1.8396349413298565) internal successors, (1411), 1278 states have internal predecessors, (1411), 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) [2023-11-28 23:48:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1445 transitions. [2023-11-28 23:48:05,434 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1445 transitions. Word has length 103 [2023-11-28 23:48:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:48:05,434 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1445 transitions. [2023-11-28 23:48:05,435 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) [2023-11-28 23:48:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1445 transitions. [2023-11-28 23:48:05,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-28 23:48:05,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:48:05,436 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] [2023-11-28 23:48:05,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-28 23:48:05,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:48:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:48:05,836 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:48:05,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash 587448315, now seen corresponding path program 1 times [2023-11-28 23:48:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:48:05,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971010145] [2023-11-28 23:48:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:05,838 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 [2023-11-28 23:48:05,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:48:05,839 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:48:05,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:48:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:06,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-28 23:48:06,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:06,607 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 [2023-11-28 23:48:06,745 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-28 23:48:06,745 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 [2023-11-28 23:48:06,774 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 [2023-11-28 23:48:06,881 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 [2023-11-28 23:48:07,776 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:48:07,776 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 [2023-11-28 23:48:07,894 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:48:07,894 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 [2023-11-28 23:48:07,911 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 [2023-11-28 23:48:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:48:07,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:48:08,015 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$#3.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 [2023-11-28 23:48:08,028 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3572) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2023-11-28 23:48:08,429 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3618 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.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)) (_ bv0 1))) is different from false [2023-11-28 23:48:08,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:48:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971010145] [2023-11-28 23:48:08,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971010145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:08,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [735377519] [2023-11-28 23:48:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:08,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:48:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:48:08,434 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:48:08,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-28 23:48:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:11,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-28 23:48:11,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:11,792 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-28 23:48:11,793 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 [2023-11-28 23:48:12,246 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-28 23:48:12,246 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 [2023-11-28 23:48:12,304 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 [2023-11-28 23:48:12,983 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:48:12,983 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 [2023-11-28 23:48:13,138 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:48:13,138 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 [2023-11-28 23:48:13,155 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 [2023-11-28 23:48:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:48:13,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:48:21,874 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-11-28 23:48:21,874 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 [2023-11-28 23:48:21,885 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4023 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.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)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-28 23:48:21,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [735377519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:21,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:48:21,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2023-11-28 23:48:21,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848633826] [2023-11-28 23:48:21,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:48:21,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 23:48:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:48:21,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 23:48:21,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=516, Unknown=15, NotChecked=196, Total=812 [2023-11-28 23:48:21,890 INFO L87 Difference]: Start difference. First operand 1289 states and 1445 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) [2023-11-28 23:48:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:48:39,938 INFO L93 Difference]: Finished difference Result 2408 states and 2614 transitions. [2023-11-28 23:48:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 23:48:39,938 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 [2023-11-28 23:48:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:48:39,944 INFO L225 Difference]: With dead ends: 2408 [2023-11-28 23:48:39,944 INFO L226 Difference]: Without dead ends: 2408 [2023-11-28 23:48:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=211, Invalid=1272, Unknown=15, NotChecked=308, Total=1806 [2023-11-28 23:48:39,945 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 3186 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 8145 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 6220 SdHoareTripleChecker+Invalid, 8269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 8145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:48:39,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3209 Valid, 6220 Invalid, 8269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 8145 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-11-28 23:48:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2023-11-28 23:48:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1288. [2023-11-28 23:48:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 767 states have (on average 1.8383311603650587) internal successors, (1410), 1277 states have internal predecessors, (1410), 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) [2023-11-28 23:48:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1444 transitions. [2023-11-28 23:48:39,974 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1444 transitions. Word has length 105 [2023-11-28 23:48:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:48:39,974 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1444 transitions. [2023-11-28 23:48:39,974 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) [2023-11-28 23:48:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1444 transitions. [2023-11-28 23:48:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-28 23:48:39,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:48:39,976 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] [2023-11-28 23:48:39,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-28 23:48:40,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-28 23:48:40,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-28 23:48:40,376 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:48:40,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:48:40,377 INFO L85 PathProgramCache]: Analyzing trace with hash 587448316, now seen corresponding path program 1 times [2023-11-28 23:48:40,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:48:40,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998891980] [2023-11-28 23:48:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:40,378 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 [2023-11-28 23:48:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:48:40,379 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:48:40,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:48:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:41,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-28 23:48:41,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:41,199 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 [2023-11-28 23:48:41,295 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 [2023-11-28 23:48:41,306 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:48:41,306 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 [2023-11-28 23:48:41,329 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 [2023-11-28 23:48:41,336 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 [2023-11-28 23:48:41,427 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 [2023-11-28 23:48:41,432 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 [2023-11-28 23:48:42,138 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:48:42,138 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 [2023-11-28 23:48:42,147 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 [2023-11-28 23:48:42,258 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:48:42,259 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 [2023-11-28 23:48:42,265 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 [2023-11-28 23:48:42,285 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 [2023-11-28 23:48:42,292 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 [2023-11-28 23:48:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:48:42,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:48:42,482 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$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.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 [2023-11-28 23:48:42,521 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_4521) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-11-28 23:48:43,929 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4614) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4521 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4613))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4614) .cse2 v_ArrVal_4522) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4521) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-28 23:48:43,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:48:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998891980] [2023-11-28 23:48:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998891980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:43,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286117835] [2023-11-28 23:48:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:48:43,942 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:48:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:48:43,943 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:48:43,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-11-28 23:48:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:48:47,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-28 23:48:47,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:48:47,590 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 [2023-11-28 23:48:47,871 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 [2023-11-28 23:48:47,889 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:48:47,890 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 [2023-11-28 23:48:47,946 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 [2023-11-28 23:48:47,953 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 [2023-11-28 23:48:48,100 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 [2023-11-28 23:48:48,105 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 [2023-11-28 23:48:48,751 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:48:48,752 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 [2023-11-28 23:48:48,757 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 [2023-11-28 23:48:48,928 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:48:48,929 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 [2023-11-28 23:48:48,940 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 [2023-11-28 23:48:48,957 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 [2023-11-28 23:48:48,964 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 [2023-11-28 23:48:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:48:48,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:48:49,025 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$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-28 23:48:49,059 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-11-28 23:48:50,413 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5067 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5158))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5159) .cse0 v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5158 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5159 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5066 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5159) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5158) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5066) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-11-28 23:48:50,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286117835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:48:50,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:48:50,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-28 23:48:50,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721119419] [2023-11-28 23:48:50,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:48:50,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:48:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:48:50,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:48:50,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-28 23:48:50,425 INFO L87 Difference]: Start difference. First operand 1288 states and 1444 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) [2023-11-28 23:49:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:49:11,744 INFO L93 Difference]: Finished difference Result 1641 states and 1766 transitions. [2023-11-28 23:49:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:49:11,744 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 [2023-11-28 23:49:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:49:11,748 INFO L225 Difference]: With dead ends: 1641 [2023-11-28 23:49:11,749 INFO L226 Difference]: Without dead ends: 1641 [2023-11-28 23:49:11,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-28 23:49:11,750 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1126 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 9389 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 9409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:49:11,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 4205 Invalid, 9409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 9389 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-11-28 23:49:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-11-28 23:49:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1287. [2023-11-28 23:49:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 767 states have (on average 1.8370273794002607) internal successors, (1409), 1276 states have internal predecessors, (1409), 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) [2023-11-28 23:49:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1443 transitions. [2023-11-28 23:49:11,773 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1443 transitions. Word has length 105 [2023-11-28 23:49:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:49:11,773 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1443 transitions. [2023-11-28 23:49:11,774 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) [2023-11-28 23:49:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1443 transitions. [2023-11-28 23:49:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-28 23:49:11,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:49:11,775 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] [2023-11-28 23:49:11,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-28 23:49:11,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2023-11-28 23:49:12,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-28 23:49:12,175 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:49:12,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:49:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1899106476, now seen corresponding path program 1 times [2023-11-28 23:49:12,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:49:12,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852972676] [2023-11-28 23:49:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:49:12,177 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 [2023-11-28 23:49:12,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:49:12,177 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:49:12,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:49:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:13,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-28 23:49:13,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:49:13,067 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 [2023-11-28 23:49:13,210 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-28 23:49:13,211 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 [2023-11-28 23:49:13,244 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 [2023-11-28 23:49:13,343 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 [2023-11-28 23:49:14,217 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:49:14,217 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 [2023-11-28 23:49:14,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:49:14,317 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 [2023-11-28 23:49:14,395 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:49:14,396 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 44 treesize of output 43 [2023-11-28 23:49:14,408 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 [2023-11-28 23:49:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:49:14,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:49:14,508 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5581) |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 [2023-11-28 23:49:14,519 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5581) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-28 23:49:16,166 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.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))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-28 23:49:16,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:49:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852972676] [2023-11-28 23:49:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852972676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:49:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2147427384] [2023-11-28 23:49:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:49:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:49:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:49:16,171 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:49:16,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-28 23:49:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:49:49,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-28 23:49:49,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:49:49,449 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-28 23:49:49,449 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 [2023-11-28 23:49:49,886 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-28 23:49:49,886 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 [2023-11-28 23:49:49,947 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 [2023-11-28 23:49:50,654 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:49:50,654 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 [2023-11-28 23:49:50,836 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:49:50,836 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 [2023-11-28 23:49:50,950 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:49:50,951 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 [2023-11-28 23:49:50,969 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 [2023-11-28 23:49:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:49:51,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:49:55,154 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6048 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6048) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-28 23:49:55,694 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-11-28 23:49:55,694 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 [2023-11-28 23:49:55,708 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6094 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.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_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)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-28 23:49:55,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2147427384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:49:55,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:49:55,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2023-11-28 23:49:55,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850269001] [2023-11-28 23:49:55,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:49:55,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:49:55,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:49:55,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:49:55,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=657, Unknown=16, NotChecked=280, Total=1056 [2023-11-28 23:49:55,713 INFO L87 Difference]: Start difference. First operand 1287 states and 1443 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) [2023-11-28 23:50:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:50:18,125 INFO L93 Difference]: Finished difference Result 2404 states and 2610 transitions. [2023-11-28 23:50:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 23:50:18,125 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 [2023-11-28 23:50:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:50:18,129 INFO L225 Difference]: With dead ends: 2404 [2023-11-28 23:50:18,129 INFO L226 Difference]: Without dead ends: 2404 [2023-11-28 23:50:18,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=244, Invalid=1565, Unknown=17, NotChecked=430, Total=2256 [2023-11-28 23:50:18,130 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 2471 mSDsluCounter, 7281 mSDsCounter, 0 mSdLazyCounter, 10455 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 7793 SdHoareTripleChecker+Invalid, 10561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 10455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:50:18,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2494 Valid, 7793 Invalid, 10561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 10455 Invalid, 0 Unknown, 0 Unchecked, 21.5s Time] [2023-11-28 23:50:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-11-28 23:50:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1286. [2023-11-28 23:50:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 767 states have (on average 1.8357235984354627) internal successors, (1408), 1275 states have internal predecessors, (1408), 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) [2023-11-28 23:50:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1442 transitions. [2023-11-28 23:50:18,152 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1442 transitions. Word has length 107 [2023-11-28 23:50:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:50:18,152 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1442 transitions. [2023-11-28 23:50:18,152 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) [2023-11-28 23:50:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1442 transitions. [2023-11-28 23:50:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-28 23:50:18,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:50:18,153 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] [2023-11-28 23:50:18,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-28 23:50:18,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-28 23:50:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-28 23:50:18,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:50:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:50:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1899106477, now seen corresponding path program 1 times [2023-11-28 23:50:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:50:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166955826] [2023-11-28 23:50:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:50:18,555 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 [2023-11-28 23:50:18,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:50:18,556 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:50:18,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:50:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:50:19,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-28 23:50:19,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:50:19,489 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 [2023-11-28 23:50:19,610 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:50:19,610 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 [2023-11-28 23:50:19,619 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 [2023-11-28 23:50:19,642 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 [2023-11-28 23:50:19,659 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 [2023-11-28 23:50:19,764 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 22 treesize of output 10 [2023-11-28 23:50:19,769 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 [2023-11-28 23:50:20,463 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:50:20,463 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 [2023-11-28 23:50:20,477 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 [2023-11-28 23:50:20,586 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:50:20,586 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 [2023-11-28 23:50:20,594 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 [2023-11-28 23:50:20,678 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:50:20,678 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 [2023-11-28 23:50:20,683 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 [2023-11-28 23:50:20,703 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 [2023-11-28 23:50:20,711 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 [2023-11-28 23:50:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:50:20,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:50:20,919 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-28 23:50:20,956 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-28 23:50:21,059 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$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6562))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6561) .cse0 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6561) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6562) |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 [2023-11-28 23:50:21,155 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6561) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_6562) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6561 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6562 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6563 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6564 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_6562))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6561) .cse3 v_ArrVal_6563) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6564) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-28 23:50:30,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:50:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166955826] [2023-11-28 23:50:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166955826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:50:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221634742] [2023-11-28 23:50:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:50:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:50:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:50:30,418 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:50:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-28 23:51:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:06,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-28 23:51:06,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:06,167 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 [2023-11-28 23:51:08,741 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:51:08,741 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 [2023-11-28 23:51:08,792 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 [2023-11-28 23:51:09,230 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 [2023-11-28 23:51:09,281 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 [2023-11-28 23:51:10,497 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 [2023-11-28 23:51:10,523 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 [2023-11-28 23:51:15,283 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:51:15,284 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 [2023-11-28 23:51:15,335 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 [2023-11-28 23:51:16,513 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:51:16,513 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 [2023-11-28 23:51:16,587 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 [2023-11-28 23:51:17,326 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:51:17,326 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 [2023-11-28 23:51:17,353 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 [2023-11-28 23:51:17,481 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 [2023-11-28 23:51:17,507 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 [2023-11-28 23:51:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:51:17,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:51:17,776 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-28 23:51:17,888 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-11-28 23:51:18,084 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$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7123) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7124) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7124))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7123) .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 [2023-11-28 23:51:18,356 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_7123) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_7124) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7125 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_7124))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_7123) .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 [2023-11-28 23:51:23,150 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$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7218))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7124))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7217) .cse0 v_ArrVal_7123) .cse1 v_ArrVal_7126) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7125) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7218 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7217 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7123 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7124 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7218))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7217) .cse6 v_ArrVal_7123) (select (select (store .cse7 .cse6 v_ArrVal_7124) |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 [2023-11-28 23:51:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1221634742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:51:23,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:51:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-28 23:51:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35643971] [2023-11-28 23:51:23,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:51:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 23:51:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:51:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 23:51:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=317, Unknown=17, NotChecked=396, Total=812 [2023-11-28 23:51:23,179 INFO L87 Difference]: Start difference. First operand 1286 states and 1442 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) [2023-11-28 23:53:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:53:18,034 INFO L93 Difference]: Finished difference Result 1639 states and 1764 transitions. [2023-11-28 23:53:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:53:18,034 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 [2023-11-28 23:53:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:53:18,037 INFO L225 Difference]: With dead ends: 1639 [2023-11-28 23:53:18,037 INFO L226 Difference]: Without dead ends: 1639 [2023-11-28 23:53:18,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=136, Invalid=533, Unknown=17, NotChecked=504, Total=1190 [2023-11-28 23:53:18,038 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1816 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 8372 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 8405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 8372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:53:18,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 3718 Invalid, 8405 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 8372 Invalid, 0 Unknown, 0 Unchecked, 112.9s Time] [2023-11-28 23:53:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2023-11-28 23:53:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1285. [2023-11-28 23:53:18,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 767 states have (on average 1.834419817470665) internal successors, (1407), 1274 states have internal predecessors, (1407), 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) [2023-11-28 23:53:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1441 transitions. [2023-11-28 23:53:18,055 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1441 transitions. Word has length 107 [2023-11-28 23:53:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:53:18,055 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1441 transitions. [2023-11-28 23:53:18,055 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) [2023-11-28 23:53:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1441 transitions. [2023-11-28 23:53:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-28 23:53:18,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:53:18,056 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] [2023-11-28 23:53:18,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-11-28 23:53:18,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-11-28 23:53:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:53:18,457 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:53:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -317790408, now seen corresponding path program 1 times [2023-11-28 23:53:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:53:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213522746] [2023-11-28 23:53:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:18,458 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 [2023-11-28 23:53:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:53:18,459 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:53:18,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:53:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:53:19,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-28 23:53:19,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:19,571 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 [2023-11-28 23:53:21,005 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-28 23:53:21,006 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 [2023-11-28 23:53:21,238 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 [2023-11-28 23:53:21,873 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 [2023-11-28 23:53:28,192 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:53:28,192 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 [2023-11-28 23:53:28,909 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:53:28,909 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 [2023-11-28 23:53:29,523 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:53:29,523 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 [2023-11-28 23:53:30,152 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-28 23:53:30,153 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 [2023-11-28 23:53:30,254 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 [2023-11-28 23:53:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:53:30,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:31,073 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.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|)))))) is different from false [2023-11-28 23:53:35,575 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$#3.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 [2023-11-28 23:53:35,667 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.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)))) is different from false [2023-11-28 23:53:35,760 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$#3.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 [2023-11-28 23:53:35,858 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7654 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.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)))) (_ bv0 1))) is different from false [2023-11-28 23:53:37,554 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7702 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7656 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7655 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7654 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#3.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)))) is different from false [2023-11-28 23:53:37,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:53:37,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213522746] [2023-11-28 23:53:37,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213522746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:37,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1698703599] [2023-11-28 23:53:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:37,571 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:53:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:53:37,572 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:53:37,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-28 23:54:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:54:18,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-28 23:54:18,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:54:18,682 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-28 23:54:18,682 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 [2023-11-28 23:54:22,676 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-28 23:54:22,676 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 [2023-11-28 23:54:23,163 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 [2023-11-28 23:54:28,688 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:54:28,688 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 [2023-11-28 23:54:30,085 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:54:30,086 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 [2023-11-28 23:54:30,999 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:54:30,999 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 [2023-11-28 23:54:31,927 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:54:31,927 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 [2023-11-28 23:54:32,031 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 [2023-11-28 23:54:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:54:32,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:54:37,580 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8139) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-28 23:54:37,686 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.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_8139)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-28 23:54:37,793 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.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_8139)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-28 23:54:37,901 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.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_8139)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-28 23:54:38,011 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.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_8139)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-28 23:54:39,961 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2023-11-28 23:54:39,961 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 [2023-11-28 23:54:40,026 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#3.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_8139)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-28 23:54:40,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1698703599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:54:40,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:54:40,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2023-11-28 23:54:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176475012] [2023-11-28 23:54:40,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:54:40,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 23:54:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-28 23:54:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 23:54:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=716, Unknown=19, NotChecked=780, Total=1640 [2023-11-28 23:54:40,042 INFO L87 Difference]: Start difference. First operand 1285 states and 1441 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) [2023-11-28 23:57:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:57:03,586 INFO L93 Difference]: Finished difference Result 2400 states and 2606 transitions. [2023-11-28 23:57:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:57:03,586 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 [2023-11-28 23:57:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:57:03,590 INFO L225 Difference]: With dead ends: 2400 [2023-11-28 23:57:03,591 INFO L226 Difference]: Without dead ends: 2400 [2023-11-28 23:57:03,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=279, Invalid=1730, Unknown=19, NotChecked=1164, Total=3192 [2023-11-28 23:57:03,592 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 3160 mSDsluCounter, 6983 mSDsCounter, 0 mSdLazyCounter, 10122 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 133.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 7494 SdHoareTripleChecker+Invalid, 10244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 10122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:57:03,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 7494 Invalid, 10244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 10122 Invalid, 0 Unknown, 0 Unchecked, 137.3s Time] [2023-11-28 23:57:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-11-28 23:57:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1284. [2023-11-28 23:57:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 767 states have (on average 1.833116036505867) internal successors, (1406), 1273 states have internal predecessors, (1406), 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) [2023-11-28 23:57:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1440 transitions. [2023-11-28 23:57:03,609 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1440 transitions. Word has length 109 [2023-11-28 23:57:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:57:03,610 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1440 transitions. [2023-11-28 23:57:03,610 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) [2023-11-28 23:57:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1440 transitions. [2023-11-28 23:57:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-28 23:57:03,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:57:03,611 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] [2023-11-28 23:57:03,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2023-11-28 23:57:03,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:57:04,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-28 23:57:04,012 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-28 23:57:04,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -317790407, now seen corresponding path program 1 times [2023-11-28 23:57:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-28 23:57:04,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021606339] [2023-11-28 23:57:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:04,013 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 [2023-11-28 23:57:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-28 23:57:04,014 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-28 23:57:04,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-28 23:57:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:57:05,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-28 23:57:05,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:57:05,341 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 [2023-11-28 23:57:07,719 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-28 23:57:07,719 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 [2023-11-28 23:57:07,771 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 [2023-11-28 23:57:08,042 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 [2023-11-28 23:57:08,068 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 [2023-11-28 23:57:08,909 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 [2023-11-28 23:57:08,936 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 [2023-11-28 23:57:14,192 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:57:14,192 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 [2023-11-28 23:57:14,247 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 [2023-11-28 23:57:15,135 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:57:15,135 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 [2023-11-28 23:57:15,216 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 [2023-11-28 23:57:15,875 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:57:15,875 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 [2023-11-28 23:57:15,903 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 [2023-11-28 23:57:16,643 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-28 23:57:16,643 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 [2023-11-28 23:57:16,716 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 [2023-11-28 23:57:16,768 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 [2023-11-28 23:57:16,816 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 [2023-11-28 23:57:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-28 23:57:17,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:57:17,820 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-28 23:57:17,936 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2023-11-28 23:57:18,061 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8669))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8670) .cse0 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8670) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-11-28 23:57:18,202 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8670) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8669))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8670) .cse3 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-28 23:57:18,372 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$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8668))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8669))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8667) .cse0 v_ArrVal_8670) .cse1 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8668))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8667) .cse6 v_ArrVal_8670) (select (select (store .cse7 .cse6 v_ArrVal_8669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8672))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-11-28 23:57:18,555 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8668))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8667) .cse2 v_ArrVal_8670) (select (select (store .cse3 .cse2 v_ArrVal_8669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8672))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8668))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8669))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8667) .cse5 v_ArrVal_8670) .cse6 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2023-11-28 23:57:22,668 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8671 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8763 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8764))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8668))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8669))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8763) .cse0 v_ArrVal_8667) .cse1 v_ArrVal_8670) .cse2 v_ArrVal_8672) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8671) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8672 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8670 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8668 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8667 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8764 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8763 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8764))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8668))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8763) .cse8 v_ArrVal_8667) .cse9 v_ArrVal_8670) (select (select (store .cse10 .cse9 v_ArrVal_8669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8672))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2023-11-28 23:57:22,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-28 23:57:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021606339] [2023-11-28 23:57:22,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021606339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:57:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [807859624] [2023-11-28 23:57:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-28 23:57:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-28 23:57:22,705 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-28 23:57:22,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c14f61b1-c0bf-4f27-949c-a799f492fe3b/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process