./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:50:09,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:09,107 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:50:09,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:09,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:09,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:09,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:09,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:09,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:09,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:09,144 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:09,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:09,145 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:09,145 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:50:09,146 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:09,147 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:09,147 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:50:09,148 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:50:09,148 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:09,149 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:50:09,149 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:50:09,150 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:50:09,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:50:09,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:50:09,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:09,152 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:50:09,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:50:09,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:50:09,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:09,154 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:50:09,155 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:50:09,155 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:50:09,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:09,156 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:50:09,156 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:50:09,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:50:09,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:09,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:09,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:09,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:09,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:09,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:09,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:09,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:50:09,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:50:09,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:09,159 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:09,160 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:09,160 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 [2023-11-21 19:50:09,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:09,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:09,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:09,411 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:09,412 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:09,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i [2023-11-21 19:50:12,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:50:13,248 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:50:13,249 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i [2023-11-21 19:50:13,289 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/955430717/8847516ee7c7405e82e0859b62912df0/FLAGd10867f4a [2023-11-21 19:50:13,309 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/955430717/8847516ee7c7405e82e0859b62912df0 [2023-11-21 19:50:13,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:50:13,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:50:13,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:13,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:50:13,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:50:13,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:13" (1/1) ... [2023-11-21 19:50:13,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d810fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:13, skipping insertion in model container [2023-11-21 19:50:13,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:13" (1/1) ... [2023-11-21 19:50:13,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:14,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:15,033 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 19:50:15,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17b39f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:15, skipping insertion in model container [2023-11-21 19:50:15,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:15,034 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 19:50:15,036 INFO L158 Benchmark]: Toolchain (without parser) took 1716.43ms. Allocated memory is still 138.4MB. Free memory was 91.3MB in the beginning and 84.3MB in the end (delta: 6.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-21 19:50:15,037 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:50:15,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1713.45ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 84.3MB in the end (delta: 6.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-21 19:50:15,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1713.45ms. Allocated memory is still 138.4MB. Free memory was 90.9MB in the beginning and 84.3MB in the end (delta: 6.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: 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_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:50:17,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:50:17,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:50:17,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:50:17,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:50:17,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:50:17,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:50:17,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:50:17,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:50:17,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:50:17,725 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:50:17,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:50:17,726 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:50:17,728 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:50:17,728 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:50:17,729 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:50:17,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:50:17,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:50:17,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:50:17,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:50:17,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:50:17,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:50:17,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:50:17,734 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:50:17,734 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:50:17,735 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:50:17,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:50:17,735 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:50:17,736 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:50:17,736 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:50:17,738 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:50:17,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:50:17,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:50:17,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:50:17,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:50:17,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:50:17,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:50:17,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:17,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:50:17,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:50:17,742 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:50:17,742 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:50:17,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:50:17,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:50:17,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:50:17,743 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8acf23346fce853ea7f29f138c9c8af6d9070a3261dcb0ee52337c4f25e22e59 [2023-11-21 19:50:18,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:50:18,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:50:18,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:50:18,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:50:18,177 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:50:18,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i [2023-11-21 19:50:21,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:50:21,845 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:50:21,846 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl_p.i [2023-11-21 19:50:21,887 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/25066ad38/c18f9a685cce4fda851c3f03084187ee/FLAG436a077ea [2023-11-21 19:50:21,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/data/25066ad38/c18f9a685cce4fda851c3f03084187ee [2023-11-21 19:50:21,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:50:21,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:50:21,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:21,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:50:21,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:50:21,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:21" (1/1) ... [2023-11-21 19:50:21,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549a0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:21, skipping insertion in model container [2023-11-21 19:50:21,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:50:21" (1/1) ... [2023-11-21 19:50:22,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:23,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:23,667 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 19:50:23,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:50:23,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:24,011 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:50:24,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:50:24,416 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:50:24,424 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:50:24,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24 WrapperNode [2023-11-21 19:50:24,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:50:24,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:24,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:50:24,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:50:24,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,656 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-21 19:50:24,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:50:24,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:50:24,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:50:24,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:50:24,671 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:50:24,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:50:24,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:50:24,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:50:24,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (1/1) ... [2023-11-21 19:50:24,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:50:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:50:24,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:50:24,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:50:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-21 19:50:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-21 19:50:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-21 19:50:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-21 19:50:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:50:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-21 19:50:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:50:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:50:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:50:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-21 19:50:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:50:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 19:50:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:50:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:50:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:50:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-21 19:50:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-21 19:50:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-21 19:50:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-21 19:50:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-21 19:50:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:50:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-21 19:50:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-21 19:50:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:50:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:50:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:50:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:50:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-21 19:50:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-21 19:50:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-21 19:50:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-21 19:50:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:50:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:50:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-21 19:50:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-21 19:50:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-21 19:50:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:50:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-21 19:50:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:50:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:50:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:50:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-21 19:50:24,986 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-21 19:50:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:50:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:50:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-21 19:50:24,987 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-21 19:50:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-21 19:50:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-21 19:50:24,988 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-21 19:50:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 19:50:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-21 19:50:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:50:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:50:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:50:24,989 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:50:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-21 19:50:24,990 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-21 19:50:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-21 19:50:24,991 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-21 19:50:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-21 19:50:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-21 19:50:24,992 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-21 19:50:24,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-21 19:50:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-21 19:50:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-21 19:50:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-21 19:50:24,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-21 19:50:24,993 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-21 19:50:24,994 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-21 19:50:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 19:50:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-21 19:50:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-21 19:50:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:50:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:50:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-21 19:50:24,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-21 19:50:25,423 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:50:25,426 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:50:31,172 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:50:31,651 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:50:31,651 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 19:50:31,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:31 BoogieIcfgContainer [2023-11-21 19:50:31,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:50:31,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:50:31,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:50:31,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:50:31,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:50:21" (1/3) ... [2023-11-21 19:50:31,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d97293c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:31, skipping insertion in model container [2023-11-21 19:50:31,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:50:24" (2/3) ... [2023-11-21 19:50:31,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d97293c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:50:31, skipping insertion in model container [2023-11-21 19:50:31,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:50:31" (3/3) ... [2023-11-21 19:50:31,662 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outl_p.i [2023-11-21 19:50:31,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:50:31,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-21 19:50:31,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:50:31,766 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=FINITE_AUTOMATA, 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;@15e6ce1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:50:31,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-21 19:50:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 266 states have (on average 2.007518796992481) internal successors, (534), 477 states have internal predecessors, (534), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-21 19:50:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:50:31,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:31,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:50:31,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-21 19:50:31,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 40375456, now seen corresponding path program 1 times [2023-11-21 19:50:31,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:50:31,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358818207] [2023-11-21 19:50:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:31,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:50:31,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:50:31,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 19:50:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:32,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:50:32,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:32,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:32,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:50:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358818207] [2023-11-21 19:50:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358818207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:32,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:32,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838738705] [2023-11-21 19:50:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:50:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:50:32,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:50:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:32,620 INFO L87 Difference]: Start difference. First operand has 576 states, 266 states have (on average 2.007518796992481) internal successors, (534), 477 states have internal predecessors, (534), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:50:34,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:36,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:38,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:42,495 INFO L93 Difference]: Finished difference Result 1041 states and 1241 transitions. [2023-11-21 19:50:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:50:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:50:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:42,528 INFO L225 Difference]: With dead ends: 1041 [2023-11-21 19:50:42,529 INFO L226 Difference]: Without dead ends: 1039 [2023-11-21 19:50:42,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:50:42,536 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 586 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:42,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1756 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1275 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-11-21 19:50:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-11-21 19:50:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 847. [2023-11-21 19:50:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 454 states have (on average 1.9955947136563876) internal successors, (906), 676 states have internal predecessors, (906), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-21 19:50:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1182 transitions. [2023-11-21 19:50:42,698 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1182 transitions. Word has length 4 [2023-11-21 19:50:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:42,698 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1182 transitions. [2023-11-21 19:50:42,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:50:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1182 transitions. [2023-11-21 19:50:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:50:42,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:42,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:50:42,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:42,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-21 19:50:42,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 40375457, now seen corresponding path program 1 times [2023-11-21 19:50:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:50:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049463156] [2023-11-21 19:50:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:42,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:42,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:50:42,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:50:42,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 19:50:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:43,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:50:43,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:43,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:43,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:50:43,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049463156] [2023-11-21 19:50:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049463156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:43,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:43,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:50:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717514849] [2023-11-21 19:50:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:50:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:50:43,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:50:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:50:43,519 INFO L87 Difference]: Start difference. First operand 847 states and 1182 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:50:45,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:47,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:49,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:53,185 INFO L93 Difference]: Finished difference Result 966 states and 1261 transitions. [2023-11-21 19:50:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:50:53,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 19:50:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:53,195 INFO L225 Difference]: With dead ends: 966 [2023-11-21 19:50:53,195 INFO L226 Difference]: Without dead ends: 966 [2023-11-21 19:50:53,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:50:53,197 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 236 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:53,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1967 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1036 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2023-11-21 19:50:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-21 19:50:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 908. [2023-11-21 19:50:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 483 states have (on average 1.9544513457556936) internal successors, (944), 706 states have internal predecessors, (944), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-21 19:50:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1258 transitions. [2023-11-21 19:50:53,245 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1258 transitions. Word has length 4 [2023-11-21 19:50:53,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:53,246 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1258 transitions. [2023-11-21 19:50:53,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:50:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1258 transitions. [2023-11-21 19:50:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:50:53,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:53,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:53,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:53,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:53,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-21 19:50:53,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1266514677, now seen corresponding path program 1 times [2023-11-21 19:50:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:50:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77152175] [2023-11-21 19:50:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:53,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:50:53,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:50:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 19:50:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:53,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:50:53,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:54,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:54,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:50:54,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77152175] [2023-11-21 19:50:54,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77152175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:54,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:54,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:50:54,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319462352] [2023-11-21 19:50:54,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:54,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:50:54,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:50:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:50:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:54,039 INFO L87 Difference]: Start difference. First operand 908 states and 1258 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:50:56,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:50:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:57,899 INFO L93 Difference]: Finished difference Result 1093 states and 1310 transitions. [2023-11-21 19:50:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:50:57,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 9 [2023-11-21 19:50:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:57,907 INFO L225 Difference]: With dead ends: 1093 [2023-11-21 19:50:57,907 INFO L226 Difference]: Without dead ends: 1093 [2023-11-21 19:50:57,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:50:57,909 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 563 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:57,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 938 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-11-21 19:50:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-21 19:50:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 907. [2023-11-21 19:50:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 483 states have (on average 1.9440993788819876) internal successors, (939), 705 states have internal predecessors, (939), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-21 19:50:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1253 transitions. [2023-11-21 19:50:57,948 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1253 transitions. Word has length 9 [2023-11-21 19:50:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:57,948 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1253 transitions. [2023-11-21 19:50:57,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:50:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1253 transitions. [2023-11-21 19:50:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:50:57,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:57,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:57,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:50:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:58,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-21 19:50:58,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1266514676, now seen corresponding path program 1 times [2023-11-21 19:50:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:50:58,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732091868] [2023-11-21 19:50:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:58,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:50:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:50:58,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:50:58,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -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 [2023-11-21 19:50:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:50:58,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:50:58,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:50:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:50:58,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:50:58,890 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:50:58,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732091868] [2023-11-21 19:50:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732091868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:50:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:50:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:50:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311162520] [2023-11-21 19:50:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:50:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:50:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:50:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:50:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:50:58,892 INFO L87 Difference]: Start difference. First operand 907 states and 1253 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:00,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:51:02,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:51:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:05,816 INFO L93 Difference]: Finished difference Result 970 states and 1265 transitions. [2023-11-21 19:51:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:51:05,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 9 [2023-11-21 19:51:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:05,823 INFO L225 Difference]: With dead ends: 970 [2023-11-21 19:51:05,823 INFO L226 Difference]: Without dead ends: 970 [2023-11-21 19:51:05,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:51:05,824 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 228 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1509 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 710 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2023-11-21 19:51:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-21 19:51:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 910. [2023-11-21 19:51:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 486 states have (on average 1.9382716049382716) internal successors, (942), 708 states have internal predecessors, (942), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-21 19:51:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1256 transitions. [2023-11-21 19:51:05,861 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1256 transitions. Word has length 9 [2023-11-21 19:51:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:05,861 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1256 transitions. [2023-11-21 19:51:05,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1256 transitions. [2023-11-21 19:51:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:51:05,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:05,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:05,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:06,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:51:06,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-21 19:51:06,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:06,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1643938270, now seen corresponding path program 1 times [2023-11-21 19:51:06,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:51:06,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879046316] [2023-11-21 19:51:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:06,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:51:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:51:06,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 19:51:06,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99dc3295-7235-4c37-932e-fdedc725fa70/bin/utaipan-verify-QoSU8krkJ5/mathsat -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