./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:14:14,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:14:14,587 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 01:14:14,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:14:14,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:14:14,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:14:14,627 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:14:14,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:14:14,629 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:14:14,629 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:14:14,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:14:14,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:14:14,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:14:14,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:14:14,633 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:14:14,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:14:14,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:14:14,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:14:14,635 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:14:14,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:14:14,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:14:14,640 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:14:14,641 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:14:14,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:14:14,642 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:14:14,642 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:14:14,643 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:14:14,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:14:14,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:14:14,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:14:14,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:14:14,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:14:14,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:14:14,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:14:14,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:14:14,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:14:14,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:14:14,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:14:14,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:14:14,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:14:14,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:14:14,648 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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-11-29 01:14:14,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:14:14,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:14:14,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:14:14,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:14:14,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:14:14,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-29 01:14:18,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:14:18,658 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:14:18,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-29 01:14:18,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/db1eb4af4/ab16cf7a177844f896e2824be659325a/FLAG97e652a9d [2023-11-29 01:14:18,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/db1eb4af4/ab16cf7a177844f896e2824be659325a [2023-11-29 01:14:18,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:14:18,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:14:18,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:18,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:14:18,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:14:18,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:18" (1/1) ... [2023-11-29 01:14:18,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c39dfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:18, skipping insertion in model container [2023-11-29 01:14:18,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:18" (1/1) ... [2023-11-29 01:14:18,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:14:19,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:19,415 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-29 01:14:19,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5091f9c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:19, skipping insertion in model container [2023-11-29 01:14:19,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:19,417 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 01:14:19,419 INFO L158 Benchmark]: Toolchain (without parser) took 719.59ms. Allocated memory is still 161.5MB. Free memory was 125.4MB in the beginning and 103.0MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:14:19,420 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:14:19,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.36ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 103.0MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 01:14:19,422 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 161.5MB. Free memory is still 134.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.36ms. Allocated memory is still 161.5MB. Free memory was 124.9MB in the beginning and 103.0MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:14:21,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:14:21,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 01:14:21,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:14:21,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:14:21,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:14:21,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:14:21,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:14:21,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:14:21,674 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:14:21,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:14:21,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:14:21,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:14:21,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:14:21,677 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:14:21,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:14:21,679 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:14:21,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:14:21,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:14:21,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:14:21,681 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 01:14:21,682 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 01:14:21,682 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 01:14:21,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:14:21,683 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:14:21,684 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:14:21,684 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:14:21,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:14:21,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:14:21,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:14:21,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:14:21,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:14:21,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:14:21,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:14:21,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:14:21,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:14:21,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:14:21,688 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:14:21,689 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:14:21,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:14:21,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:14:21,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:14:21,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:14:21,690 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:14:21,690 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_c5ee5095-0aa9-4724-a777-a882ecd77ee0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2023-11-29 01:14:22,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:14:22,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:14:22,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:14:22,051 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:14:22,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:14:22,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-29 01:14:25,371 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:14:25,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:14:25,704 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-29 01:14:25,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/8ab96fd19/8e5af15ff1ed41a683a479cb186f07f8/FLAG95dd3ef89 [2023-11-29 01:14:25,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/data/8ab96fd19/8e5af15ff1ed41a683a479cb186f07f8 [2023-11-29 01:14:25,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:14:25,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:14:25,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:25,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:14:25,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:14:25,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:25" (1/1) ... [2023-11-29 01:14:25,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdfb36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:25, skipping insertion in model container [2023-11-29 01:14:25,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:14:25" (1/1) ... [2023-11-29 01:14:25,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:14:26,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:26,532 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 01:14:26,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:14:26,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:26,653 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:14:26,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:14:26,830 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:14:26,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26 WrapperNode [2023-11-29 01:14:26,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:14:26,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:14:26,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:14:26,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:14:26,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:26,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:26,979 INFO L138 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1449 [2023-11-29 01:14:26,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:14:26,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:14:26,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:14:26,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:14:26,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:26,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,154 INFO L175 MemorySlicer]: Split 413 memory accesses to 4 slices as follows [2, 5, 5, 401]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 100 writes are split as follows [0, 1, 1, 98]. [2023-11-29 01:14:27,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,238 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:14:27,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:14:27,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:14:27,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:14:27,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (1/1) ... [2023-11-29 01:14:27,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:14:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:14:27,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:14:27,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 01:14:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:14:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:14:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:14:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:14:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:14:27,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:14:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:14:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 01:14:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 01:14:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:14:27,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:14:27,668 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:14:27,670 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:14:27,674 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:14:27,735 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:14:27,761 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:14:27,785 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 01:14:35,497 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:14:35,805 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:14:35,806 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-29 01:14:35,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:35 BoogieIcfgContainer [2023-11-29 01:14:35,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:14:35,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:14:35,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:14:35,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:14:35,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:14:25" (1/3) ... [2023-11-29 01:14:35,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64572887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:35, skipping insertion in model container [2023-11-29 01:14:35,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:14:26" (2/3) ... [2023-11-29 01:14:35,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64572887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:14:35, skipping insertion in model container [2023-11-29 01:14:35,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:14:35" (3/3) ... [2023-11-29 01:14:35,818 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-3.i [2023-11-29 01:14:35,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:14:35,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-29 01:14:35,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:14:35,936 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;@26adc845, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:14:35,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-29 01:14:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 1485 states, 632 states have (on average 2.5838607594936707) internal successors, (1633), 1477 states have internal predecessors, (1633), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:14:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-29 01:14:35,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:35,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-29 01:14:35,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr850ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:35,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2385053, now seen corresponding path program 1 times [2023-11-29 01:14:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936843533] [2023-11-29 01:14:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:35,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:35,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:35,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:35,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 01:14:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:36,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:14:36,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:36,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:36,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:36,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936843533] [2023-11-29 01:14:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936843533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:36,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:14:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141143734] [2023-11-29 01:14:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:36,336 INFO L87 Difference]: Start difference. First operand has 1485 states, 632 states have (on average 2.5838607594936707) internal successors, (1633), 1477 states have internal predecessors, (1633), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:40,217 INFO L93 Difference]: Finished difference Result 1812 states and 1907 transitions. [2023-11-29 01:14:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:40,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2023-11-29 01:14:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:40,244 INFO L225 Difference]: With dead ends: 1812 [2023-11-29 01:14:40,244 INFO L226 Difference]: Without dead ends: 1809 [2023-11-29 01:14:40,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:40,251 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 364 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:40,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 2078 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 01:14:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-11-29 01:14:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1480. [2023-11-29 01:14:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 638 states have (on average 2.4357366771159876) internal successors, (1554), 1472 states have internal predecessors, (1554), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:14:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1566 transitions. [2023-11-29 01:14:40,368 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1566 transitions. Word has length 3 [2023-11-29 01:14:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1566 transitions. [2023-11-29 01:14:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1566 transitions. [2023-11-29 01:14:40,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:14:40,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:40,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:14:40,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:14:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:40,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:40,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2005150439, now seen corresponding path program 1 times [2023-11-29 01:14:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939988999] [2023-11-29 01:14:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:40,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:40,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 01:14:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:40,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:40,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:14:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:40,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:40,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939988999] [2023-11-29 01:14:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939988999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:14:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929141226] [2023-11-29 01:14:40,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:40,820 INFO L87 Difference]: Start difference. First operand 1480 states and 1566 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:44,321 INFO L93 Difference]: Finished difference Result 1510 states and 1607 transitions. [2023-11-29 01:14:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:14:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:44,332 INFO L225 Difference]: With dead ends: 1510 [2023-11-29 01:14:44,332 INFO L226 Difference]: Without dead ends: 1510 [2023-11-29 01:14:44,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:44,335 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1029 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1030 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 01:14:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-11-29 01:14:44,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1453. [2023-11-29 01:14:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 704 states have (on average 2.25) internal successors, (1584), 1445 states have internal predecessors, (1584), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:14:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1596 transitions. [2023-11-29 01:14:44,405 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1596 transitions. Word has length 5 [2023-11-29 01:14:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:44,405 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1596 transitions. [2023-11-29 01:14:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1596 transitions. [2023-11-29 01:14:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 01:14:44,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:44,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 01:14:44,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 01:14:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:44,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:44,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2005150438, now seen corresponding path program 1 times [2023-11-29 01:14:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046865362] [2023-11-29 01:14:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:44,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:44,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:44,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:44,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 01:14:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:44,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:14:44,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:44,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:14:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:44,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:44,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046865362] [2023-11-29 01:14:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046865362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:44,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:44,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:14:44,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106759212] [2023-11-29 01:14:44,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:44,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:44,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:44,787 INFO L87 Difference]: Start difference. First operand 1453 states and 1596 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:50,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:50,113 INFO L93 Difference]: Finished difference Result 1725 states and 1888 transitions. [2023-11-29 01:14:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:50,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-29 01:14:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:50,122 INFO L225 Difference]: With dead ends: 1725 [2023-11-29 01:14:50,122 INFO L226 Difference]: Without dead ends: 1725 [2023-11-29 01:14:50,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:50,123 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 456 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1626 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 01:14:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-11-29 01:14:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1576. [2023-11-29 01:14:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 837 states have (on average 2.218637992831541) internal successors, (1857), 1568 states have internal predecessors, (1857), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:14:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1869 transitions. [2023-11-29 01:14:50,168 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1869 transitions. Word has length 5 [2023-11-29 01:14:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:50,168 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 1869 transitions. [2023-11-29 01:14:50,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1869 transitions. [2023-11-29 01:14:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:14:50,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:50,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:14:50,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 01:14:50,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:50,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:50,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2028430167, now seen corresponding path program 1 times [2023-11-29 01:14:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52617674] [2023-11-29 01:14:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:50,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:50,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:50,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:50,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 01:14:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:50,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:14:50,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:50,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:50,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:50,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52617674] [2023-11-29 01:14:50,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52617674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:50,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405399963] [2023-11-29 01:14:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:50,621 INFO L87 Difference]: Start difference. First operand 1576 states and 1869 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:53,925 INFO L93 Difference]: Finished difference Result 2679 states and 3172 transitions. [2023-11-29 01:14:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:14:53,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 01:14:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:53,938 INFO L225 Difference]: With dead ends: 2679 [2023-11-29 01:14:53,938 INFO L226 Difference]: Without dead ends: 2679 [2023-11-29 01:14:53,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:14:53,940 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1072 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:53,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 3550 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 01:14:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-11-29 01:14:53,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2022. [2023-11-29 01:14:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1283 states have (on average 2.176149649259548) internal successors, (2792), 2011 states have internal predecessors, (2792), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:14:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2810 transitions. [2023-11-29 01:14:53,988 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2810 transitions. Word has length 6 [2023-11-29 01:14:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:53,988 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2810 transitions. [2023-11-29 01:14:53,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2810 transitions. [2023-11-29 01:14:53,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 01:14:53,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:53,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:53,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 01:14:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:54,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:54,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash 593798675, now seen corresponding path program 1 times [2023-11-29 01:14:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:54,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200587119] [2023-11-29 01:14:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:54,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:54,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 01:14:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:54,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:14:54,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:54,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:54,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:54,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200587119] [2023-11-29 01:14:54,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200587119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:54,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:54,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:14:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767226672] [2023-11-29 01:14:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:14:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:14:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:54,387 INFO L87 Difference]: Start difference. First operand 2022 states and 2810 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:56,250 INFO L93 Difference]: Finished difference Result 2304 states and 2944 transitions. [2023-11-29 01:14:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:14:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-29 01:14:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:56,265 INFO L225 Difference]: With dead ends: 2304 [2023-11-29 01:14:56,265 INFO L226 Difference]: Without dead ends: 2304 [2023-11-29 01:14:56,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:14:56,267 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 543 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:56,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 2487 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:14:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2023-11-29 01:14:56,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 1913. [2023-11-29 01:14:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1174 states have (on average 2.183986371379898) internal successors, (2564), 1902 states have internal predecessors, (2564), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:14:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2582 transitions. [2023-11-29 01:14:56,331 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2582 transitions. Word has length 8 [2023-11-29 01:14:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:56,332 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 2582 transitions. [2023-11-29 01:14:56,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:56,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2582 transitions. [2023-11-29 01:14:56,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 01:14:56,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:56,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:56,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:14:56,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:56,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:14:56,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:14:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1106372499, now seen corresponding path program 1 times [2023-11-29 01:14:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:14:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811022103] [2023-11-29 01:14:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:14:56,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:14:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:14:56,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:14:56,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 01:14:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:14:56,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:14:56,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:14:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:14:56,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:14:56,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:14:56,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811022103] [2023-11-29 01:14:56,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811022103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:14:56,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:14:56,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:14:56,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679357687] [2023-11-29 01:14:56,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:14:56,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:14:56,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:14:56,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:14:56,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:14:56,746 INFO L87 Difference]: Start difference. First operand 1913 states and 2582 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:59,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:14:59,906 INFO L93 Difference]: Finished difference Result 2304 states and 2943 transitions. [2023-11-29 01:14:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:14:59,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-29 01:14:59,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:14:59,921 INFO L225 Difference]: With dead ends: 2304 [2023-11-29 01:14:59,921 INFO L226 Difference]: Without dead ends: 2298 [2023-11-29 01:14:59,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:14:59,922 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 549 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3619 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:14:59,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 3619 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 01:14:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-11-29 01:14:59,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1907. [2023-11-29 01:14:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1168 states have (on average 2.1892123287671232) internal successors, (2557), 1896 states have internal predecessors, (2557), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:14:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2575 transitions. [2023-11-29 01:14:59,983 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2575 transitions. Word has length 11 [2023-11-29 01:14:59,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:14:59,983 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2575 transitions. [2023-11-29 01:14:59,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:14:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2575 transitions. [2023-11-29 01:14:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-29 01:14:59,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:14:59,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:14:59,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 01:15:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:00,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:00,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -251212221, now seen corresponding path program 1 times [2023-11-29 01:15:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:00,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140855107] [2023-11-29 01:15:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:00,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:00,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 01:15:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:00,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:15:00,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:00,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:00,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140855107] [2023-11-29 01:15:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140855107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:00,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:00,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:00,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654823988] [2023-11-29 01:15:00,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:00,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:15:00,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:00,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:15:00,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:00,395 INFO L87 Difference]: Start difference. First operand 1907 states and 2575 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:01,839 INFO L93 Difference]: Finished difference Result 1853 states and 2495 transitions. [2023-11-29 01:15:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:15:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-29 01:15:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:01,851 INFO L225 Difference]: With dead ends: 1853 [2023-11-29 01:15:01,851 INFO L226 Difference]: Without dead ends: 1853 [2023-11-29 01:15:01,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:15:01,852 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 70 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:01,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2409 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:15:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-11-29 01:15:01,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1853. [2023-11-29 01:15:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1138 states have (on average 2.1766256590509667) internal successors, (2477), 1842 states have internal predecessors, (2477), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2495 transitions. [2023-11-29 01:15:01,893 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2495 transitions. Word has length 11 [2023-11-29 01:15:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:01,894 INFO L495 AbstractCegarLoop]: Abstraction has 1853 states and 2495 transitions. [2023-11-29 01:15:01,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2495 transitions. [2023-11-29 01:15:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:15:01,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:01,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:01,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 01:15:02,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:02,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:02,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash -896778947, now seen corresponding path program 1 times [2023-11-29 01:15:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597665840] [2023-11-29 01:15:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:02,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:02,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:02,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:02,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 01:15:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:02,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:02,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:02,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:02,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:02,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597665840] [2023-11-29 01:15:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597665840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:02,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:02,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441686598] [2023-11-29 01:15:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:02,348 INFO L87 Difference]: Start difference. First operand 1853 states and 2495 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:04,157 INFO L93 Difference]: Finished difference Result 1839 states and 2453 transitions. [2023-11-29 01:15:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:04,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-11-29 01:15:04,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:04,168 INFO L225 Difference]: With dead ends: 1839 [2023-11-29 01:15:04,168 INFO L226 Difference]: Without dead ends: 1839 [2023-11-29 01:15:04,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:04,169 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 58 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:04,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3570 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:15:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2023-11-29 01:15:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1837. [2023-11-29 01:15:04,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1136 states have (on average 2.141725352112676) internal successors, (2433), 1826 states have internal predecessors, (2433), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2451 transitions. [2023-11-29 01:15:04,204 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2451 transitions. Word has length 13 [2023-11-29 01:15:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:04,204 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2451 transitions. [2023-11-29 01:15:04,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2451 transitions. [2023-11-29 01:15:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:15:04,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:04,206 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] [2023-11-29 01:15:04,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:04,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:04,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:04,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:04,411 INFO L85 PathProgramCache]: Analyzing trace with hash 80004107, now seen corresponding path program 1 times [2023-11-29 01:15:04,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:04,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712874377] [2023-11-29 01:15:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:04,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:04,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 01:15:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:04,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:15:04,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:04,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:04,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:04,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:04,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712874377] [2023-11-29 01:15:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712874377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:04,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400916488] [2023-11-29 01:15:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:04,739 INFO L87 Difference]: Start difference. First operand 1837 states and 2451 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:09,028 INFO L93 Difference]: Finished difference Result 1890 states and 2454 transitions. [2023-11-29 01:15:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:09,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 01:15:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:09,040 INFO L225 Difference]: With dead ends: 1890 [2023-11-29 01:15:09,041 INFO L226 Difference]: Without dead ends: 1890 [2023-11-29 01:15:09,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:09,042 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 964 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:09,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1519 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 01:15:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-11-29 01:15:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1833. [2023-11-29 01:15:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1136 states have (on average 2.1346830985915495) internal successors, (2425), 1822 states have internal predecessors, (2425), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2443 transitions. [2023-11-29 01:15:09,107 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2443 transitions. Word has length 27 [2023-11-29 01:15:09,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:09,108 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2443 transitions. [2023-11-29 01:15:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2443 transitions. [2023-11-29 01:15:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:15:09,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:09,109 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] [2023-11-29 01:15:09,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 01:15:09,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:09,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:09,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 80004108, now seen corresponding path program 1 times [2023-11-29 01:15:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529426606] [2023-11-29 01:15:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:09,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:09,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:09,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:09,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 01:15:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:09,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:09,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:09,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:15:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:09,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:09,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529426606] [2023-11-29 01:15:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529426606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660914257] [2023-11-29 01:15:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:09,725 INFO L87 Difference]: Start difference. First operand 1833 states and 2443 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:16,227 INFO L93 Difference]: Finished difference Result 1978 states and 2454 transitions. [2023-11-29 01:15:16,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:16,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 01:15:16,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:16,237 INFO L225 Difference]: With dead ends: 1978 [2023-11-29 01:15:16,237 INFO L226 Difference]: Without dead ends: 1978 [2023-11-29 01:15:16,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:16,238 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 393 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:16,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2516 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 01:15:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-11-29 01:15:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1829. [2023-11-29 01:15:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1136 states have (on average 2.1276408450704225) internal successors, (2417), 1818 states have internal predecessors, (2417), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2435 transitions. [2023-11-29 01:15:16,281 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2435 transitions. Word has length 27 [2023-11-29 01:15:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:16,281 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2435 transitions. [2023-11-29 01:15:16,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2435 transitions. [2023-11-29 01:15:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 01:15:16,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:16,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:16,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 01:15:16,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:16,484 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:16,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash 935617745, now seen corresponding path program 1 times [2023-11-29 01:15:16,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:16,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226993633] [2023-11-29 01:15:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:16,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:16,488 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:16,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 01:15:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:16,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:16,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:16,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:16,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226993633] [2023-11-29 01:15:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226993633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:16,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917050535] [2023-11-29 01:15:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:16,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:16,845 INFO L87 Difference]: Start difference. First operand 1829 states and 2435 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:18,725 INFO L93 Difference]: Finished difference Result 1817 states and 2415 transitions. [2023-11-29 01:15:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:18,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-11-29 01:15:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:18,736 INFO L225 Difference]: With dead ends: 1817 [2023-11-29 01:15:18,736 INFO L226 Difference]: Without dead ends: 1817 [2023-11-29 01:15:18,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:18,737 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 23 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:18,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3556 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:15:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-11-29 01:15:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1817. [2023-11-29 01:15:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1124 states have (on average 2.132562277580071) internal successors, (2397), 1806 states have internal predecessors, (2397), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2415 transitions. [2023-11-29 01:15:18,766 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2415 transitions. Word has length 46 [2023-11-29 01:15:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:18,766 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 2415 transitions. [2023-11-29 01:15:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2415 transitions. [2023-11-29 01:15:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 01:15:18,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:18,769 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] [2023-11-29 01:15:18,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-29 01:15:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:18,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:18,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash 560683185, now seen corresponding path program 1 times [2023-11-29 01:15:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:18,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557418159] [2023-11-29 01:15:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:18,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:18,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:18,974 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:18,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 01:15:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:19,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:15:19,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:19,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:19,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:15:19,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:15:19,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-29 01:15:20,017 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:15:20,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:15:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:20,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:20,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557418159] [2023-11-29 01:15:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557418159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:15:20,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874044840] [2023-11-29 01:15:20,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:20,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:20,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:20,041 INFO L87 Difference]: Start difference. First operand 1817 states and 2415 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:24,939 INFO L93 Difference]: Finished difference Result 1789 states and 2299 transitions. [2023-11-29 01:15:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 01:15:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:24,949 INFO L225 Difference]: With dead ends: 1789 [2023-11-29 01:15:24,949 INFO L226 Difference]: Without dead ends: 1789 [2023-11-29 01:15:24,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:24,950 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 943 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:24,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 860 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 01:15:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-11-29 01:15:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1600. [2023-11-29 01:15:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 991 states have (on average 2.005045408678103) internal successors, (1987), 1589 states have internal predecessors, (1987), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2005 transitions. [2023-11-29 01:15:24,974 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2005 transitions. Word has length 50 [2023-11-29 01:15:24,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:24,974 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2005 transitions. [2023-11-29 01:15:24,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2005 transitions. [2023-11-29 01:15:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:15:24,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:24,976 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] [2023-11-29 01:15:24,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 01:15:25,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:25,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:25,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash -852831317, now seen corresponding path program 1 times [2023-11-29 01:15:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220903323] [2023-11-29 01:15:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:25,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:25,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:25,180 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:25,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 01:15:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:25,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:15:25,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:25,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:15:25,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:15:25,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:15:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:25,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:25,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220903323] [2023-11-29 01:15:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220903323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:25,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559677481] [2023-11-29 01:15:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:25,551 INFO L87 Difference]: Start difference. First operand 1600 states and 2005 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:30,954 INFO L93 Difference]: Finished difference Result 1599 states and 2003 transitions. [2023-11-29 01:15:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-29 01:15:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:30,964 INFO L225 Difference]: With dead ends: 1599 [2023-11-29 01:15:30,964 INFO L226 Difference]: Without dead ends: 1599 [2023-11-29 01:15:30,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:30,965 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 3 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:30,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2796 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 01:15:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2023-11-29 01:15:30,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1599. [2023-11-29 01:15:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 991 states have (on average 2.003027245206862) internal successors, (1985), 1588 states have internal predecessors, (1985), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2003 transitions. [2023-11-29 01:15:30,991 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2003 transitions. Word has length 54 [2023-11-29 01:15:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:30,992 INFO L495 AbstractCegarLoop]: Abstraction has 1599 states and 2003 transitions. [2023-11-29 01:15:30,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2003 transitions. [2023-11-29 01:15:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:15:30,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:30,994 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] [2023-11-29 01:15:30,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 01:15:31,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:31,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:31,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash -852831316, now seen corresponding path program 1 times [2023-11-29 01:15:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210096015] [2023-11-29 01:15:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:31,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:31,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:31,203 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:31,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 01:15:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:31,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:15:31,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:31,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:15:31,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:15:31,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:15:31,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 01:15:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:31,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:31,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210096015] [2023-11-29 01:15:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210096015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644620521] [2023-11-29 01:15:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:15:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:15:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:31,634 INFO L87 Difference]: Start difference. First operand 1599 states and 2003 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:38,466 INFO L93 Difference]: Finished difference Result 1598 states and 2001 transitions. [2023-11-29 01:15:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:15:38,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-29 01:15:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:38,473 INFO L225 Difference]: With dead ends: 1598 [2023-11-29 01:15:38,474 INFO L226 Difference]: Without dead ends: 1598 [2023-11-29 01:15:38,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:15:38,474 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 1 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:38,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2845 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-11-29 01:15:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-11-29 01:15:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1598. [2023-11-29 01:15:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 989 states have (on average 2.005055611729019) internal successors, (1983), 1587 states have internal predecessors, (1983), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:15:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2001 transitions. [2023-11-29 01:15:38,498 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2001 transitions. Word has length 54 [2023-11-29 01:15:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:38,499 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2001 transitions. [2023-11-29 01:15:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:15:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2001 transitions. [2023-11-29 01:15:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 01:15:38,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:38,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:15:38,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 01:15:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:38,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:38,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 980342063, now seen corresponding path program 1 times [2023-11-29 01:15:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830817329] [2023-11-29 01:15:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:38,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:38,703 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:38,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 01:15:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:39,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:15:39,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:39,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:15:39,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830817329] [2023-11-29 01:15:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830817329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:15:39,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:15:39,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:15:39,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475052131] [2023-11-29 01:15:39,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:15:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:15:39,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:39,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:15:39,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:15:39,043 INFO L87 Difference]: Start difference. First operand 1598 states and 2001 transitions. Second operand has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:15:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:40,821 INFO L93 Difference]: Finished difference Result 1600 states and 2006 transitions. [2023-11-29 01:15:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:15:40,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 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 60 [2023-11-29 01:15:40,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:40,833 INFO L225 Difference]: With dead ends: 1600 [2023-11-29 01:15:40,833 INFO L226 Difference]: Without dead ends: 1600 [2023-11-29 01:15:40,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:15:40,834 INFO L413 NwaCegarLoop]: 1119 mSDtfsCounter, 1 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:40,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3351 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:15:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-11-29 01:15:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2023-11-29 01:15:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 990 states have (on average 2.005050505050505) internal successors, (1985), 1589 states have internal predecessors, (1985), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:15:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2006 transitions. [2023-11-29 01:15:40,869 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2006 transitions. Word has length 60 [2023-11-29 01:15:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:40,870 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2006 transitions. [2023-11-29 01:15:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:15:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2006 transitions. [2023-11-29 01:15:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 01:15:40,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:40,871 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, 1] [2023-11-29 01:15:40,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 01:15:41,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:41,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:41,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash -160912010, now seen corresponding path program 1 times [2023-11-29 01:15:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:41,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951984966] [2023-11-29 01:15:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:15:41,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:41,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:41,074 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:41,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 01:15:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:15:41,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:15:41,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:41,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:41,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951984966] [2023-11-29 01:15:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951984966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:41,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:41,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:15:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030712989] [2023-11-29 01:15:41,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:15:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:15:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:15:41,516 INFO L87 Difference]: Start difference. First operand 1600 states and 2006 transitions. Second operand has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:15:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:43,648 INFO L93 Difference]: Finished difference Result 1609 states and 2022 transitions. [2023-11-29 01:15:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:15:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 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 61 [2023-11-29 01:15:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:43,654 INFO L225 Difference]: With dead ends: 1609 [2023-11-29 01:15:43,655 INFO L226 Difference]: Without dead ends: 1609 [2023-11-29 01:15:43,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:15:43,656 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 6 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:43,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3347 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:15:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-11-29 01:15:43,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1608. [2023-11-29 01:15:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 997 states have (on average 2.004012036108325) internal successors, (1998), 1596 states have internal predecessors, (1998), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:15:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2019 transitions. [2023-11-29 01:15:43,697 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2019 transitions. Word has length 61 [2023-11-29 01:15:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:43,698 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2019 transitions. [2023-11-29 01:15:43,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:15:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2019 transitions. [2023-11-29 01:15:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 01:15:43,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:43,699 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, 1] [2023-11-29 01:15:43,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 01:15:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:43,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1447440111, now seen corresponding path program 2 times [2023-11-29 01:15:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633789212] [2023-11-29 01:15:43,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:15:43,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:43,902 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:43,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 01:15:44,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:15:44,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:44,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:15:44,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:44,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:44,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:44,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633789212] [2023-11-29 01:15:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633789212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:44,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:44,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 01:15:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737073591] [2023-11-29 01:15:44,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:44,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:15:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:15:44,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:15:44,702 INFO L87 Difference]: Start difference. First operand 1608 states and 2019 transitions. Second operand has 14 states, 12 states have (on average 5.666666666666667) internal successors, (68), 14 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:15:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:15:50,393 INFO L93 Difference]: Finished difference Result 1623 states and 2049 transitions. [2023-11-29 01:15:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:15:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.666666666666667) internal successors, (68), 14 states have internal predecessors, (68), 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 64 [2023-11-29 01:15:50,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:15:50,399 INFO L225 Difference]: With dead ends: 1623 [2023-11-29 01:15:50,399 INFO L226 Difference]: Without dead ends: 1621 [2023-11-29 01:15:50,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:15:50,400 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 12 mSDsluCounter, 10025 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11142 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:15:50,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11142 Invalid, 1757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 01:15:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2023-11-29 01:15:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1617. [2023-11-29 01:15:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1006 states have (on average 1.9980119284294235) internal successors, (2010), 1605 states have internal predecessors, (2010), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:15:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2031 transitions. [2023-11-29 01:15:50,423 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2031 transitions. Word has length 64 [2023-11-29 01:15:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:15:50,424 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2031 transitions. [2023-11-29 01:15:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.666666666666667) internal successors, (68), 14 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:15:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2031 transitions. [2023-11-29 01:15:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 01:15:50,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:15:50,425 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, 1] [2023-11-29 01:15:50,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 01:15:50,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:50,626 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:15:50,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:15:50,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1829842545, now seen corresponding path program 3 times [2023-11-29 01:15:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:15:50,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549041594] [2023-11-29 01:15:50,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:15:50,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:15:50,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:15:50,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:15:50,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 01:15:51,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 01:15:51,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:15:51,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:15:51,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:15:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:51,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:15:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:15:52,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:15:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549041594] [2023-11-29 01:15:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549041594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:15:52,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:15:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 01:15:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54617050] [2023-11-29 01:15:52,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:15:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:15:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:15:52,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:15:52,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:15:52,278 INFO L87 Difference]: Start difference. First operand 1617 states and 2031 transitions. Second operand has 26 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 26 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:03,446 INFO L93 Difference]: Finished difference Result 1647 states and 2109 transitions. [2023-11-29 01:16:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:16:03,447 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 26 states have internal predecessors, (80), 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 70 [2023-11-29 01:16:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:03,450 INFO L225 Difference]: With dead ends: 1647 [2023-11-29 01:16:03,450 INFO L226 Difference]: Without dead ends: 1644 [2023-11-29 01:16:03,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 01:16:03,452 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 24 mSDsluCounter, 16681 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 17796 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:03,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 17796 Invalid, 3378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 3357 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 01:16:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-11-29 01:16:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1635. [2023-11-29 01:16:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1024 states have (on average 1.9853515625) internal successors, (2033), 1623 states have internal predecessors, (2033), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:16:03,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2054 transitions. [2023-11-29 01:16:03,496 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2054 transitions. Word has length 70 [2023-11-29 01:16:03,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:03,497 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2054 transitions. [2023-11-29 01:16:03,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 26 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:03,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2054 transitions. [2023-11-29 01:16:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 01:16:03,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:03,498 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, 1] [2023-11-29 01:16:03,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 01:16:03,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:16:03,699 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:03,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash -274420017, now seen corresponding path program 4 times [2023-11-29 01:16:03,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:03,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187250924] [2023-11-29 01:16:03,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:16:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:16:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:03,702 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:16:03,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 01:16:04,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:16:04,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:04,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:16:04,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:04,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:16:06,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187250924] [2023-11-29 01:16:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187250924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:16:06,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:16:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 01:16:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114316697] [2023-11-29 01:16:06,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:16:06,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 01:16:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:16:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 01:16:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:16:06,674 INFO L87 Difference]: Start difference. First operand 1635 states and 2054 transitions. Second operand has 50 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 50 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:16:29,137 INFO L93 Difference]: Finished difference Result 1692 states and 2185 transitions. [2023-11-29 01:16:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 01:16:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 50 states have internal predecessors, (104), 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 82 [2023-11-29 01:16:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:16:29,142 INFO L225 Difference]: With dead ends: 1692 [2023-11-29 01:16:29,142 INFO L226 Difference]: Without dead ends: 1690 [2023-11-29 01:16:29,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 01:16:29,147 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 48 mSDsluCounter, 26758 mSDsCounter, 0 mSdLazyCounter, 6643 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 27875 SdHoareTripleChecker+Invalid, 6786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 6643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:16:29,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 27875 Invalid, 6786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [143 Valid, 6643 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2023-11-29 01:16:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2023-11-29 01:16:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1669. [2023-11-29 01:16:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1058 states have (on average 1.9650283553875236) internal successors, (2079), 1657 states have internal predecessors, (2079), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:16:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2100 transitions. [2023-11-29 01:16:29,188 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2100 transitions. Word has length 82 [2023-11-29 01:16:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:16:29,188 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2100 transitions. [2023-11-29 01:16:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.1666666666666665) internal successors, (104), 50 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:16:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2100 transitions. [2023-11-29 01:16:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 01:16:29,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:16:29,190 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] [2023-11-29 01:16:29,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 01:16:29,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:16:29,391 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:16:29,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:16:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash 151097455, now seen corresponding path program 5 times [2023-11-29 01:16:29,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:16:29,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280785116] [2023-11-29 01:16:29,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:16:29,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:16:29,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:16:29,394 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:16:29,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 01:16:31,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:16:31,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:16:31,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 01:16:31,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:16:31,262 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 01:16:31,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2023-11-29 01:16:31,746 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-29 01:16:31,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2023-11-29 01:16:31,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:16:32,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 01:16:35,379 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:16:35,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 59 [2023-11-29 01:16:35,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-11-29 01:16:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:16:35,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:16:36,098 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1592 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1592) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:16:36,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:16:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280785116] [2023-11-29 01:16:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280785116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:16:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1527285945] [2023-11-29 01:16:36,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:16:36,102 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:16:36,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:16:36,103 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:16:36,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-11-29 01:17:48,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 01:17:48,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:17:48,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 01:17:48,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:17:48,688 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:17:48,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:17:49,131 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:17:49,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:17:49,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:17:49,940 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:17:49,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:17:50,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:17:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:17:50,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:17:50,616 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-11-29 01:17:50,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-11-29 01:17:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1527285945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:17:50,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:17:50,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2023-11-29 01:17:50,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165090686] [2023-11-29 01:17:50,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:17:50,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:17:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:17:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:17:50,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=438, Unknown=12, NotChecked=42, Total=552 [2023-11-29 01:17:50,714 INFO L87 Difference]: Start difference. First operand 1669 states and 2100 transitions. Second operand has 20 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 18 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:18:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:18:28,727 INFO L93 Difference]: Finished difference Result 2979 states and 3454 transitions. [2023-11-29 01:18:28,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:18:28,728 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 18 states have internal predecessors, (120), 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 104 [2023-11-29 01:18:28,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:18:28,733 INFO L225 Difference]: With dead ends: 2979 [2023-11-29 01:18:28,733 INFO L226 Difference]: Without dead ends: 2975 [2023-11-29 01:18:28,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=275, Invalid=1697, Unknown=12, NotChecked=86, Total=2070 [2023-11-29 01:18:28,734 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 4737 mSDsluCounter, 11843 mSDsCounter, 0 mSdLazyCounter, 16910 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 12680 SdHoareTripleChecker+Invalid, 17045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 16910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:18:28,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 12680 Invalid, 17045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 16910 Invalid, 0 Unknown, 0 Unchecked, 36.6s Time] [2023-11-29 01:18:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-11-29 01:18:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2118. [2023-11-29 01:18:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1502 states have (on average 1.8521970705725699) internal successors, (2782), 2098 states have internal predecessors, (2782), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:18:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2817 transitions. [2023-11-29 01:18:28,781 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2817 transitions. Word has length 104 [2023-11-29 01:18:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:18:28,782 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2817 transitions. [2023-11-29 01:18:28,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 18 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:18:28,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2817 transitions. [2023-11-29 01:18:28,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 01:18:28,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:18:28,784 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] [2023-11-29 01:18:28,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-11-29 01:18:28,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 01:18:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:18:29,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:18:29,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:18:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash 151097456, now seen corresponding path program 1 times [2023-11-29 01:18:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:18:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429454752] [2023-11-29 01:18:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:29,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:18:29,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:18:29,187 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:18:29,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 01:18:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:18:30,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-29 01:18:30,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:18:30,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:18:30,526 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:18:30,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:18:30,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:18:30,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:18:30,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:18:30,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:18:30,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:18:31,520 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:18:31,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:18:31,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:18:31,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:18:31,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:18:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:18:31,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:18:33,320 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2573 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2572) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2573) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2572 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2572) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2023-11-29 01:18:33,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:18:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429454752] [2023-11-29 01:18:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429454752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:18:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [948971793] [2023-11-29 01:18:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:18:33,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:18:33,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:18:33,331 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:18:33,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-11-29 01:20:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:19,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 01:20:19,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:19,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:20:20,027 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:20:20,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:20:20,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:20:20,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:20:20,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:20:20,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:20:20,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:20:20,660 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:20,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:20:20,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:20:20,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:20:20,711 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 7 treesize of output 3 [2023-11-29 01:20:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:20,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:21,996 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3109 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3110 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:20:22,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [948971793] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:22,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:22,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 01:20:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988757766] [2023-11-29 01:20:22,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:22,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:20:22,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:20:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:20:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=88, Unknown=2, NotChecked=38, Total=156 [2023-11-29 01:20:22,002 INFO L87 Difference]: Start difference. First operand 2118 states and 2817 transitions. Second operand has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:20:33,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:33,274 INFO L93 Difference]: Finished difference Result 2461 states and 3126 transitions. [2023-11-29 01:20:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:20:33,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 9 states have internal predecessors, (60), 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 104 [2023-11-29 01:20:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:33,280 INFO L225 Difference]: With dead ends: 2461 [2023-11-29 01:20:33,280 INFO L226 Difference]: Without dead ends: 2461 [2023-11-29 01:20:33,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2023-11-29 01:20:33,281 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 706 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:33,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 3335 Invalid, 5070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-11-29 01:20:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2023-11-29 01:20:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2117. [2023-11-29 01:20:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1502 states have (on average 1.8501997336884155) internal successors, (2779), 2097 states have internal predecessors, (2779), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:20:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2814 transitions. [2023-11-29 01:20:33,319 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2814 transitions. Word has length 104 [2023-11-29 01:20:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:33,319 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 2814 transitions. [2023-11-29 01:20:33,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:20:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2814 transitions. [2023-11-29 01:20:33,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 01:20:33,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:33,321 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] [2023-11-29 01:20:33,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 01:20:33,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-11-29 01:20:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:33,722 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:20:33,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -822164495, now seen corresponding path program 1 times [2023-11-29 01:20:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:20:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513212224] [2023-11-29 01:20:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:20:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:20:33,724 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:20:33,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 01:20:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:34,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 01:20:34,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:34,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:20:34,642 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:20:34,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:20:34,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:20:34,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:20:35,517 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:35,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:20:35,627 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:20:35,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:20:35,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:20:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:35,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:39,806 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3516 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3516) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:20:40,204 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3516 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3562 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3562))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3516)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:20:40,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:20:40,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513212224] [2023-11-29 01:20:40,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513212224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:40,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [81108205] [2023-11-29 01:20:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:40,207 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:20:40,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:20:40,208 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:20:40,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-11-29 01:20:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:42,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 01:20:42,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:42,473 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:20:42,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:20:42,974 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:20:42,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:20:43,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:20:43,793 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:43,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:20:43,978 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:20:43,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:20:44,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:20:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:20:44,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:48,607 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-11-29 01:20:48,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-11-29 01:20:48,619 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3516 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4013 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4013))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3516)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-11-29 01:20:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [81108205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:20:48,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2023-11-29 01:20:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33037327] [2023-11-29 01:20:48,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:20:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:20:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:20:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=483, Unknown=5, NotChecked=138, Total=702 [2023-11-29 01:20:48,624 INFO L87 Difference]: Start difference. First operand 2117 states and 2814 transitions. Second operand has 21 states, 18 states have (on average 6.888888888888889) internal successors, (124), 20 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:21:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:21,986 INFO L93 Difference]: Finished difference Result 2971 states and 3440 transitions. [2023-11-29 01:21:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:21:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.888888888888889) internal successors, (124), 20 states have internal predecessors, (124), 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 106 [2023-11-29 01:21:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:21,990 INFO L225 Difference]: With dead ends: 2971 [2023-11-29 01:21:21,990 INFO L226 Difference]: Without dead ends: 2971 [2023-11-29 01:21:21,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=197, Invalid=1216, Unknown=5, NotChecked=222, Total=1640 [2023-11-29 01:21:21,991 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1882 mSDsluCounter, 12005 mSDsCounter, 0 mSdLazyCounter, 16036 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 13013 SdHoareTripleChecker+Invalid, 16077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 16036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:21,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 13013 Invalid, 16077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 16036 Invalid, 0 Unknown, 0 Unchecked, 32.5s Time] [2023-11-29 01:21:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2023-11-29 01:21:22,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2116. [2023-11-29 01:21:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1502 states have (on average 1.848202396804261) internal successors, (2776), 2096 states have internal predecessors, (2776), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:21:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2811 transitions. [2023-11-29 01:21:22,021 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2811 transitions. Word has length 106 [2023-11-29 01:21:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:22,021 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 2811 transitions. [2023-11-29 01:21:22,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.888888888888889) internal successors, (124), 20 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:21:22,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2811 transitions. [2023-11-29 01:21:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 01:21:22,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:22,023 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] [2023-11-29 01:21:22,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 01:21:22,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-11-29 01:21:22,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:21:22,424 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:21:22,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash -822164494, now seen corresponding path program 1 times [2023-11-29 01:21:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:21:22,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275558904] [2023-11-29 01:21:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:22,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:21:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:21:22,426 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:21:22,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 01:21:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:23,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-29 01:21:23,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:23,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:21:23,415 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:21:23,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:21:23,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:21:23,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:21:23,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:21:23,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:21:23,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 01:21:24,337 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:21:24,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:21:24,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:21:24,469 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:21:24,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:21:24,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:21:24,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:21:24,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 01:21:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:21:24,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:24,690 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4466 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4466) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:21:24,724 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4466 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_4466) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2023-11-29 01:21:26,181 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4558 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4466 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4557))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4558) .cse0 v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4466) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4558 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4465 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4558) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4557) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4465) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-11-29 01:21:26,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:21:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275558904] [2023-11-29 01:21:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275558904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1353570901] [2023-11-29 01:21:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:26,191 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:21:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:21:26,192 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:21:26,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-11-29 01:23:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:13,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 01:23:13,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:13,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:23:13,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:23:13,571 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:23:13,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:23:13,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:23:13,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:23:13,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:23:13,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:23:14,578 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:23:14,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:23:14,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:23:14,793 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:23:14,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:23:14,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:23:14,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:23:14,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:23:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:23:14,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:14,888 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5010) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-29 01:23:14,925 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_5010) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 01:23:16,358 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5102 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5103) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5102) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5102 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5011 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5102))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5103) .cse2 v_ArrVal_5011) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5010) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:23:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1353570901] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:16,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 01:23:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786356899] [2023-11-29 01:23:16,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:16,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:23:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:23:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:23:16,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-29 01:23:16,370 INFO L87 Difference]: Start difference. First operand 2116 states and 2811 transitions. Second operand has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:23:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:37,404 INFO L93 Difference]: Finished difference Result 2469 states and 3131 transitions. [2023-11-29 01:23:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:23:37,405 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 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 106 [2023-11-29 01:23:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:37,410 INFO L225 Difference]: With dead ends: 2469 [2023-11-29 01:23:37,410 INFO L226 Difference]: Without dead ends: 2469 [2023-11-29 01:23:37,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-29 01:23:37,411 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1716 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 7976 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 8006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 7976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:37,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 3880 Invalid, 8006 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 7976 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2023-11-29 01:23:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2023-11-29 01:23:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2115. [2023-11-29 01:23:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1502 states have (on average 1.8462050599201065) internal successors, (2773), 2095 states have internal predecessors, (2773), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:23:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2808 transitions. [2023-11-29 01:23:37,435 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2808 transitions. Word has length 106 [2023-11-29 01:23:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:37,435 INFO L495 AbstractCegarLoop]: Abstraction has 2115 states and 2808 transitions. [2023-11-29 01:23:37,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:23:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2808 transitions. [2023-11-29 01:23:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 01:23:37,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:37,436 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, 1, 1, 1] [2023-11-29 01:23:37,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-11-29 01:23:37,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:23:37,837 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:23:37,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash 175966541, now seen corresponding path program 1 times [2023-11-29 01:23:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:23:37,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826775386] [2023-11-29 01:23:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:37,838 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 [2023-11-29 01:23:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:23:37,840 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:23:37,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 01:23:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:38,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 01:23:38,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:38,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:23:39,005 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:23:39,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:23:39,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:23:39,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:23:40,165 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:40,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:23:40,290 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:40,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:23:40,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:23:40,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:23:40,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:23:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:23:40,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:40,523 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5525) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:23:40,536 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5525) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:23:40,552 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:23:40,568 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:23:40,925 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5525 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5571 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5571))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5524)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:23:40,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:23:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826775386] [2023-11-29 01:23:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826775386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:23:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1942520638] [2023-11-29 01:23:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:23:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:23:40,930 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:23:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-11-29 01:24:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:09,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:24:09,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:09,248 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:24:09,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:24:09,715 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:24:09,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:24:09,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:24:10,519 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:10,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:24:10,724 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:10,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:24:10,850 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:24:10,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:24:10,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:24:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:24:10,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:10,935 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5992 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5992) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 01:24:10,946 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5992 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5992) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 01:24:10,961 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5991 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5992 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5991))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5992)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:24:11,510 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-11-29 01:24:11,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-11-29 01:24:11,524 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5991 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5992 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6038))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5991)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5992)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-29 01:24:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1942520638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:11,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:11,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2023-11-29 01:24:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453850857] [2023-11-29 01:24:11,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 01:24:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:24:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 01:24:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=572, Unknown=11, NotChecked=504, Total=1190 [2023-11-29 01:24:11,529 INFO L87 Difference]: Start difference. First operand 2115 states and 2808 transitions. Second operand has 23 states, 20 states have (on average 6.4) internal successors, (128), 22 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:24:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:45,567 INFO L93 Difference]: Finished difference Result 2967 states and 3434 transitions. [2023-11-29 01:24:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:24:45,568 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.4) internal successors, (128), 22 states have internal predecessors, (128), 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 108 [2023-11-29 01:24:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:45,573 INFO L225 Difference]: With dead ends: 2967 [2023-11-29 01:24:45,573 INFO L226 Difference]: Without dead ends: 2967 [2023-11-29 01:24:45,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=242, Invalid=1423, Unknown=11, NotChecked=774, Total=2450 [2023-11-29 01:24:45,574 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 1880 mSDsluCounter, 11389 mSDsCounter, 0 mSdLazyCounter, 15151 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 12396 SdHoareTripleChecker+Invalid, 15192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 15151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:45,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 12396 Invalid, 15192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 15151 Invalid, 0 Unknown, 0 Unchecked, 33.0s Time] [2023-11-29 01:24:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2023-11-29 01:24:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2114. [2023-11-29 01:24:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1502 states have (on average 1.8442077230359522) internal successors, (2770), 2094 states have internal predecessors, (2770), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:24:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2805 transitions. [2023-11-29 01:24:45,597 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2805 transitions. Word has length 108 [2023-11-29 01:24:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:45,598 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 2805 transitions. [2023-11-29 01:24:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.4) internal successors, (128), 22 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:24:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2805 transitions. [2023-11-29 01:24:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 01:24:45,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:45,599 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] [2023-11-29 01:24:45,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2023-11-29 01:24:45,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-11-29 01:24:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:24:46,000 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:24:46,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 175966542, now seen corresponding path program 1 times [2023-11-29 01:24:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:24:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716109543] [2023-11-29 01:24:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:46,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:24:46,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:24:46,001 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:24:46,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 01:24:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:46,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-29 01:24:46,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:46,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:24:47,124 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:24:47,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:24:47,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:24:47,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:24:47,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:47,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 01:24:47,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 01:24:48,085 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:24:48,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:24:48,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:24:48,245 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:24:48,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:24:48,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:24:48,368 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:24:48,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 01:24:48,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 01:24:48,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-11-29 01:24:48,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-29 01:24:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:24:48,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:48,644 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6508 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 01:24:48,682 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6508 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_6508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-11-29 01:24:48,726 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6506) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6505))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6506) .cse2 v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 01:24:48,774 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6506) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_6505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_6505))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_6506) .cse3 v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 01:24:50,109 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6600))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_6505))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6599) .cse0 v_ArrVal_6506) .cse1 v_ArrVal_6507) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_6507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6600))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6599) .cse6 v_ArrVal_6506) (select (select (store .cse7 .cse6 v_ArrVal_6505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6507))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 01:24:50,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:24:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716109543] [2023-11-29 01:24:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716109543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:24:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [706467751] [2023-11-29 01:24:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:50,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:24:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:24:50,127 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:24:50,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-11-29 01:25:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:21,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 117 conjunts are in the unsatisfiable core [2023-11-29 01:25:21,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:21,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:25:21,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:25:21,408 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:25:21,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:25:21,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:25:21,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:25:21,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:25:21,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:25:22,383 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:22,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:25:22,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:25:22,564 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:22,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:25:22,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:25:22,684 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:25:22,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:25:22,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:25:22,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:25:22,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:25:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:25:22,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:22,782 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7069 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2023-11-29 01:25:22,818 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7069 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_7069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2023-11-29 01:25:22,927 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7067))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7068) .cse0 v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7068) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-11-29 01:25:23,065 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_7068) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_7067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_7067))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_7068) .cse3 v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 01:25:24,967 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7162 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7161))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7162) .cse1 v_ArrVal_7068) (select (select (store .cse2 .cse1 v_ArrVal_7067) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7070))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7162 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7070 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7067 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7161))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7067))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7162) .cse4 v_ArrVal_7068) .cse5 v_ArrVal_7070) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 01:25:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [706467751] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:24,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 01:25:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335039522] [2023-11-29 01:25:24,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:24,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:25:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:25:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:25:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=292, Unknown=10, NotChecked=430, Total=812 [2023-11-29 01:25:24,986 INFO L87 Difference]: Start difference. First operand 2114 states and 2805 transitions. Second operand has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:25:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:49,874 INFO L93 Difference]: Finished difference Result 2467 states and 3125 transitions. [2023-11-29 01:25:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:25:49,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 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 108 [2023-11-29 01:25:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:49,877 INFO L225 Difference]: With dead ends: 2467 [2023-11-29 01:25:49,878 INFO L226 Difference]: Without dead ends: 2467 [2023-11-29 01:25:49,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 200 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=133, Invalid=497, Unknown=10, NotChecked=550, Total=1190 [2023-11-29 01:25:49,879 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 1105 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 6934 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 6952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 6934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:49,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 3492 Invalid, 6952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 6934 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time] [2023-11-29 01:25:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2023-11-29 01:25:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2113. [2023-11-29 01:25:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 1502 states have (on average 1.8422103861517976) internal successors, (2767), 2093 states have internal predecessors, (2767), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:25:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2802 transitions. [2023-11-29 01:25:49,902 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2802 transitions. Word has length 108 [2023-11-29 01:25:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:49,902 INFO L495 AbstractCegarLoop]: Abstraction has 2113 states and 2802 transitions. [2023-11-29 01:25:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.642857142857142) internal successors, (121), 17 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:25:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2802 transitions. [2023-11-29 01:25:49,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 01:25:49,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:49,903 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, 1] [2023-11-29 01:25:49,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-11-29 01:25:50,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-11-29 01:25:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 01:25:50,304 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:25:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1602180548, now seen corresponding path program 1 times [2023-11-29 01:25:50,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:25:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490645668] [2023-11-29 01:25:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:50,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:25:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:25:50,306 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:25:50,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 01:25:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:51,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 01:25:51,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:51,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:25:51,805 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 01:25:51,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 01:25:51,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 01:25:52,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 01:25:53,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:53,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:53,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:53,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:53,709 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:53,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:53,861 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 01:25:53,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 01:25:53,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 01:25:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:25:53,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:58,151 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7600) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:58,172 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7599))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:25:58,192 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7599))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 01:25:58,216 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7598))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7599)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:25:58,241 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| (select (select |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7598))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7599)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:25:58,792 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7646 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7599 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7598 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7646))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7598)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7599)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:25:58,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:25:58,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490645668] [2023-11-29 01:25:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490645668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:25:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [352697417] [2023-11-29 01:25:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:58,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:25:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:25:58,800 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:25:58,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-11-29 01:26:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:26:37,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 01:26:37,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:26:37,792 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 01:26:37,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 01:26:38,592 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 01:26:38,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 01:26:38,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:26:39,850 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:26:39,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:26:40,168 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:26:40,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:26:40,363 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:26:40,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:26:40,541 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:26:40,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 01:26:40,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 01:26:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:26:40,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:40,789 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8082 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8082))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 01:26:42,533 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8082 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8081))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8082)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:26:43,386 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2023-11-29 01:26:43,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 108 [2023-11-29 01:26:43,409 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8082 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8081 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7600 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8129))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8081)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8082)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7600)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-29 01:26:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [352697417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:26:43,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:26:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2023-11-29 01:26:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980247103] [2023-11-29 01:26:43,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:43,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:26:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:26:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:26:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=753, Unknown=23, NotChecked=576, Total=1482 [2023-11-29 01:26:43,416 INFO L87 Difference]: Start difference. First operand 2113 states and 2802 transitions. Second operand has 25 states, 22 states have (on average 6.0) internal successors, (132), 24 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:27:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:46,518 INFO L93 Difference]: Finished difference Result 2963 states and 3428 transitions. [2023-11-29 01:27:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:27:46,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 6.0) internal successors, (132), 24 states have internal predecessors, (132), 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 110 [2023-11-29 01:27:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:46,522 INFO L225 Difference]: With dead ends: 2963 [2023-11-29 01:27:46,522 INFO L226 Difference]: Without dead ends: 2963 [2023-11-29 01:27:46,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=291, Invalid=1792, Unknown=23, NotChecked=864, Total=2970 [2023-11-29 01:27:46,523 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 1874 mSDsluCounter, 14967 mSDsCounter, 0 mSdLazyCounter, 19953 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 15973 SdHoareTripleChecker+Invalid, 19994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 19953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:46,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 15973 Invalid, 19994 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [41 Valid, 19953 Invalid, 0 Unknown, 0 Unchecked, 61.3s Time] [2023-11-29 01:27:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2023-11-29 01:27:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2112. [2023-11-29 01:27:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1502 states have (on average 1.8402130492676432) internal successors, (2764), 2092 states have internal predecessors, (2764), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2023-11-29 01:27:46,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2799 transitions. [2023-11-29 01:27:46,547 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2799 transitions. Word has length 110 [2023-11-29 01:27:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:46,547 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 2799 transitions. [2023-11-29 01:27:46,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 6.0) internal successors, (132), 24 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 01:27:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2799 transitions. [2023-11-29 01:27:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 01:27:46,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:46,548 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, 1] [2023-11-29 01:27:46,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2023-11-29 01:27:46,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2023-11-29 01:27:46,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:27:46,949 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-29 01:27:46,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1602180549, now seen corresponding path program 1 times [2023-11-29 01:27:46,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:27:46,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301023555] [2023-11-29 01:27:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:27:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:27:46,951 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:27:46,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 01:27:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:48,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 118 conjunts are in the unsatisfiable core [2023-11-29 01:27:48,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:48,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 01:27:48,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:27:48,882 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 01:27:48,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 01:27:48,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:27:48,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:27:49,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:27:49,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:27:50,188 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:50,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:50,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:50,371 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:50,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:50,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:50,518 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:50,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:50,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:50,686 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:27:50,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 01:27:50,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 01:27:50,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 01:27:50,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 01:27:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 01:27:50,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:51,025 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 01:27:51,069 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| .cse0 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#3.offset| .cse0 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2023-11-29 01:27:51,134 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8613))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8614) .cse0 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8614) (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-11-29 01:27:51,258 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8614) (select (select (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8613))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8614) .cse3 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 01:27:52,765 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8611))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8612) .cse1 v_ArrVal_8614) (select (select (store .cse2 .cse1 v_ArrVal_8613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8615))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8611))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8613))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8612) .cse4 v_ArrVal_8614) .cse5 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 01:27:55,532 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$#3.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8611))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8612) .cse2 v_ArrVal_8614) (select (select (store .cse3 .cse2 v_ArrVal_8613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8615))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#3.base| .cse1 v_ArrVal_8611))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8613))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#3.offset| .cse1 v_ArrVal_8612) .cse5 v_ArrVal_8614) .cse6 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2023-11-29 01:28:01,798 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8707))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8611))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8613))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8708) .cse0 v_ArrVal_8612) .cse1 v_ArrVal_8614) .cse2 v_ArrVal_8615) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8616) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8707))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8611))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8708) .cse8 v_ArrVal_8612) .cse9 v_ArrVal_8614) (select (select (store .cse10 .cse9 v_ArrVal_8613) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8615))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd .cse7 (_ bv24 32))))))) is different from false [2023-11-29 01:28:01,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:28:01,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301023555] [2023-11-29 01:28:01,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301023555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:28:01,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [560003994] [2023-11-29 01:28:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 01:28:01,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 01:28:01,827 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 01:28:01,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ee5095-0aa9-4724-a777-a882ecd77ee0/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process