./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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_8c83537d-2950-4650-8828-cad250b58525/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 cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:01:04,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:01:04,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:01:04,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:01:04,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:01:04,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:01:04,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:01:04,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:01:04,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:01:04,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:01:04,665 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:01:04,665 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:01:04,666 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:01:04,666 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:01:04,667 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:01:04,667 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:01:04,668 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:01:04,669 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:01:04,669 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:01:04,670 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:01:04,670 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:01:04,671 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:01:04,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:01:04,672 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:01:04,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:01:04,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:01:04,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:01:04,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:01:04,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:01:04,675 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:01:04,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:01:04,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:01:04,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:01:04,677 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:01:04,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:01:04,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:01:04,679 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:01:04,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:01:04,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:01:04,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:01:04,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:01:04,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:01:04,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:01:04,683 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:01:04,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:01:04,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:01:04,684 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:01:04,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:01:04,685 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_8c83537d-2950-4650-8828-cad250b58525/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 [2023-11-21 19:01:04,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:01:04,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:01:04,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:01:04,992 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:01:04,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:01:04,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2023-11-21 19:01:08,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:01:08,537 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:01:08,538 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2023-11-21 19:01:08,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/43b1c2e5f/d98e26314b4c4973a32af1640efce474/FLAG832df10de [2023-11-21 19:01:08,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/43b1c2e5f/d98e26314b4c4973a32af1640efce474 [2023-11-21 19:01:08,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:01:08,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:01:08,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:01:08,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:01:08,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:01:08,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:01:08" (1/1) ... [2023-11-21 19:01:08,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730ec97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:08, skipping insertion in model container [2023-11-21 19:01:08,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:01:08" (1/1) ... [2023-11-21 19:01:08,729 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:01:10,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:10,518 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 19:01:10,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@520fe634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:10, skipping insertion in model container [2023-11-21 19:01:10,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:01:10,519 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 19:01:10,521 INFO L158 Benchmark]: Toolchain (without parser) took 1918.42ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 77.0MB in the beginning and 127.5MB in the end (delta: -50.4MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-11-21 19:01:10,522 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:01:10,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1913.88ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 76.6MB in the beginning and 127.5MB in the end (delta: -50.8MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-11-21 19:01:10,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1913.88ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 76.6MB in the beginning and 127.5MB in the end (delta: -50.8MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2977]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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_8c83537d-2950-4650-8828-cad250b58525/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 cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:01:12,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:01:13,107 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-21 19:01:13,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:01:13,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:01:13,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:01:13,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:01:13,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:01:13,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:01:13,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:01:13,174 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:01:13,174 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:01:13,175 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:01:13,177 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:01:13,177 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:01:13,177 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:01:13,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:01:13,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:01:13,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:01:13,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:01:13,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:01:13,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:01:13,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:01:13,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:01:13,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:01:13,183 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:01:13,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:01:13,184 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:01:13,185 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 19:01:13,185 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 19:01:13,186 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:01:13,187 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:01:13,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:01:13,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:01:13,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 19:01:13,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:01:13,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:01:13,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:01:13,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:01:13,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:01:13,190 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 19:01:13,190 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 19:01:13,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:01:13,191 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:01:13,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:01:13,192 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_8c83537d-2950-4650-8828-cad250b58525/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 [2023-11-21 19:01:13,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:01:13,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:01:13,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:01:13,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:01:13,652 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:01:13,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2023-11-21 19:01:16,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:01:17,277 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:01:17,278 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2023-11-21 19:01:17,311 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/ec60b9c67/dcbaa0ad645b4ae081b9fcfdfcd844d1/FLAGdb9dc4e38 [2023-11-21 19:01:17,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/data/ec60b9c67/dcbaa0ad645b4ae081b9fcfdfcd844d1 [2023-11-21 19:01:17,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:01:17,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:01:17,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:01:17,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:01:17,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:01:17,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:01:17" (1/1) ... [2023-11-21 19:01:17,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2764cd23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:17, skipping insertion in model container [2023-11-21 19:01:17,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:01:17" (1/1) ... [2023-11-21 19:01:17,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:01:18,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:18,918 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 19:01:18,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:01:19,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:19,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:01:19,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:01:19,802 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:01:19,810 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:01:19,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19 WrapperNode [2023-11-21 19:01:19,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:01:19,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:01:19,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:01:19,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:01:19,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:19,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,028 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-21 19:01:20,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:01:20,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:01:20,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:01:20,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:01:20,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:01:20,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:01:20,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:01:20,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:01:20,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (1/1) ... [2023-11-21 19:01:20,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:01:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:01:20,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:01:20,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:01:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-21 19:01:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-21 19:01:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-21 19:01:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-21 19:01:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:01:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-21 19:01:20,297 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 19:01:20,298 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 19:01:20,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:01:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-21 19:01:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 19:01:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 19:01:20,299 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-21 19:01:20,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-21 19:01:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:01:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-21 19:01:20,301 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-21 19:01:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-21 19:01:20,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-21 19:01:20,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-21 19:01:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 19:01:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-21 19:01:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-21 19:01:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:01:20,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 19:01:20,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:01:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-21 19:01:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-21 19:01:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-21 19:01:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-21 19:01:20,306 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-21 19:01:20,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:01:20,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:01:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-21 19:01:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-21 19:01:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-21 19:01:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 19:01:20,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-21 19:01:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 19:01:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:01:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:01:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-21 19:01:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-21 19:01:20,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:01:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 19:01:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-21 19:01:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-21 19:01:20,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-21 19:01:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-21 19:01:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-21 19:01:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 19:01:20,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-21 19:01:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 19:01:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 19:01:20,312 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 19:01:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 19:01:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-21 19:01:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-21 19:01:20,313 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-21 19:01:20,314 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-21 19:01:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-21 19:01:20,315 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-21 19:01:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-21 19:01:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-21 19:01:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-21 19:01:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-21 19:01:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-21 19:01:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-21 19:01:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-21 19:01:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-21 19:01:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 19:01:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-21 19:01:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-21 19:01:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-21 19:01:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-21 19:01:20,318 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-21 19:01:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-21 19:01:20,848 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:01:20,852 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:01:26,550 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:01:26,983 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:01:26,983 INFO L308 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-21 19:01:26,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:01:26 BoogieIcfgContainer [2023-11-21 19:01:26,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:01:26,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:01:26,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:01:26,993 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:01:26,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:01:17" (1/3) ... [2023-11-21 19:01:26,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50779565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:01:26, skipping insertion in model container [2023-11-21 19:01:26,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:01:19" (2/3) ... [2023-11-21 19:01:26,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50779565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:01:26, skipping insertion in model container [2023-11-21 19:01:26,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:01:26" (3/3) ... [2023-11-21 19:01:26,999 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw_p.i [2023-11-21 19:01:27,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:01:27,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-21 19:01:27,106 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:01:27,117 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;@5ac7f8b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:01:27,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-21 19:01:27,128 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 19:01:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:01:27,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:27,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:01:27,141 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 19:01:27,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash 40315874, now seen corresponding path program 1 times [2023-11-21 19:01:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:01:27,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067205913] [2023-11-21 19:01:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:27,167 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 19:01:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:01:27,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:27,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:27,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:01:27,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:27,990 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 19:01:27,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:27,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:01:27,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067205913] [2023-11-21 19:01:27,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067205913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:27,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:01:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:01:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365843809] [2023-11-21 19:01:27,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:28,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:01:28,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:01:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:01:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:01:28,035 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 19:01:30,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:01:32,082 WARN L539 Checker$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 19:01:34,088 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 19:01:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:38,842 INFO L93 Difference]: Finished difference Result 1041 states and 1241 transitions. [2023-11-21 19:01:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:01:38,849 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 19:01:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:38,871 INFO L225 Difference]: With dead ends: 1041 [2023-11-21 19:01:38,871 INFO L226 Difference]: Without dead ends: 1039 [2023-11-21 19:01:38,873 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 19:01:38,876 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 586 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:38,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1756 Invalid, 1282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1275 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2023-11-21 19:01:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2023-11-21 19:01:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 847. [2023-11-21 19:01:39,005 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 19:01:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1182 transitions. [2023-11-21 19:01:39,022 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1182 transitions. Word has length 4 [2023-11-21 19:01:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:39,023 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1182 transitions. [2023-11-21 19:01:39,024 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 19:01:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1182 transitions. [2023-11-21 19:01:39,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 19:01:39,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:39,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 19:01:39,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:39,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:39,247 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 19:01:39,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash 40315875, now seen corresponding path program 1 times [2023-11-21 19:01:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:01:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242201515] [2023-11-21 19:01:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:39,249 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 19:01:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:01:39,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:39,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:01:39,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:39,942 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 19:01:39,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:39,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:01:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242201515] [2023-11-21 19:01:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242201515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:01:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:01:39,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927067615] [2023-11-21 19:01:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:39,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:01:39,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:01:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:01:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:01:39,946 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 19:01:41,975 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 19:01:43,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 19:01:45,985 WARN L539 Checker$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 19:01:49,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:49,941 INFO L93 Difference]: Finished difference Result 966 states and 1261 transitions. [2023-11-21 19:01:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:01:49,942 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 19:01:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:49,952 INFO L225 Difference]: With dead ends: 966 [2023-11-21 19:01:49,952 INFO L226 Difference]: Without dead ends: 966 [2023-11-21 19:01:49,952 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 19:01:49,954 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 236 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s 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, 9.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:49,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1967 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1036 Invalid, 3 Unknown, 0 Unchecked, 9.8s Time] [2023-11-21 19:01:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-21 19:01:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 908. [2023-11-21 19:01:49,989 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 19:01:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1258 transitions. [2023-11-21 19:01:49,996 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1258 transitions. Word has length 4 [2023-11-21 19:01:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:49,996 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1258 transitions. [2023-11-21 19:01:49,996 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 19:01:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1258 transitions. [2023-11-21 19:01:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:01:49,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:49,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:50,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:50,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:50,203 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 19:01:50,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1946573047, now seen corresponding path program 1 times [2023-11-21 19:01:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:01:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976162189] [2023-11-21 19:01:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:50,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 19:01:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:01:50,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:50,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:50,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 19:01:50,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:01:50,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:50,844 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:01:50,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976162189] [2023-11-21 19:01:50,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976162189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:50,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:01:50,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:01:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484691984] [2023-11-21 19:01:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:50,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:01:50,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:01:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:01:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:01:50,847 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 19:01:52,873 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 19:01:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:01:54,842 INFO L93 Difference]: Finished difference Result 1093 states and 1310 transitions. [2023-11-21 19:01:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:01:54,843 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 19:01:54,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:01:54,851 INFO L225 Difference]: With dead ends: 1093 [2023-11-21 19:01:54,851 INFO L226 Difference]: Without dead ends: 1093 [2023-11-21 19:01:54,851 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 19:01:54,852 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 563 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 3.9s IncrementalHoareTripleChecker+Time [2023-11-21 19:01:54,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 938 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-11-21 19:01:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-11-21 19:01:54,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 907. [2023-11-21 19:01:54,882 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 19:01:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1253 transitions. [2023-11-21 19:01:54,889 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1253 transitions. Word has length 9 [2023-11-21 19:01:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:01:54,890 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1253 transitions. [2023-11-21 19:01:54,890 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 19:01:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1253 transitions. [2023-11-21 19:01:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 19:01:54,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:01:54,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:01:54,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:55,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:55,099 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 19:01:55,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:01:55,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1946573046, now seen corresponding path program 1 times [2023-11-21 19:01:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-21 19:01:55,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589283851] [2023-11-21 19:01:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:01:55,100 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 19:01:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/bin/utaipan-verify-QoSU8krkJ5/mathsat [2023-11-21 19:01:55,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:55,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c83537d-2950-4650-8828-cad250b58525/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 19:01:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:01:55,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:01:55,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:01:55,848 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 19:01:55,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:01:55,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-21 19:01:55,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589283851] [2023-11-21 19:01:55,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589283851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:01:55,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:01:55,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:01:55,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980403814] [2023-11-21 19:01:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:01:55,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:01:55,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-21 19:01:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:01:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:01:55,851 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 19:01:57,878 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 19:01:59,883 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 []