./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:24:22,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:24:22,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:24:22,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:24:22,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:24:22,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:24:22,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:24:22,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:24:22,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:24:22,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:24:22,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:24:22,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:24:22,767 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:24:22,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:24:22,768 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:24:22,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:24:22,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:24:22,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:24:22,771 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:24:22,771 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:24:22,772 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:24:22,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:24:22,773 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:24:22,774 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:24:22,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:24:22,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:24:22,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:24:22,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:24:22,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:24:22,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:22,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:24:22,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:24:22,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:24:22,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:24:22,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:24:22,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:24:22,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:24:22,781 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:24:22,782 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 [2023-11-06 22:24:23,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:24:23,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:24:23,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:24:23,119 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:24:23,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:24:23,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2023-11-06 22:24:26,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:24:26,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:24:26,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2023-11-06 22:24:26,806 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/504c1f036/78e6f449af0b44cf933dcb65aed19fb8/FLAG7f68580a7 [2023-11-06 22:24:26,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/504c1f036/78e6f449af0b44cf933dcb65aed19fb8 [2023-11-06 22:24:26,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:24:26,834 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:24:26,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:26,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:24:26,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:24:26,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:26" (1/1) ... [2023-11-06 22:24:26,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110b6517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:26, skipping insertion in model container [2023-11-06 22:24:26,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:26" (1/1) ... [2023-11-06 22:24:26,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:28,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:28,613 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) [2023-11-06 22:24:28,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6864e63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:28, skipping insertion in model container [2023-11-06 22:24:28,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:28,614 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:24:28,616 INFO L158 Benchmark]: Toolchain (without parser) took 1781.53ms. Allocated memory is still 176.2MB. Free memory was 126.9MB in the beginning and 82.6MB in the end (delta: 44.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-06 22:24:28,617 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:24:28,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1776.10ms. Allocated memory is still 176.2MB. Free memory was 126.9MB in the beginning and 82.6MB in the end (delta: 44.3MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-06 22:24:28,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1776.10ms. Allocated memory is still 176.2MB. Free memory was 126.9MB in the beginning and 82.6MB in the end (delta: 44.3MB). Peak memory consumption was 44.0MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:24:31,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:24:31,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:24:31,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:24:31,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:24:31,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:24:31,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:24:31,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:24:31,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:24:31,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:24:31,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:24:31,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:24:31,360 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:24:31,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:24:31,363 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:24:31,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:24:31,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:24:31,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:24:31,365 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:24:31,366 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:24:31,366 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:24:31,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:24:31,367 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:24:31,368 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:24:31,368 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:24:31,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:24:31,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:24:31,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:24:31,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:24:31,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:24:31,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:24:31,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:31,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:24:31,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:24:31,374 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:24:31,375 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:24:31,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:24:31,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:24:31,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:24:31,376 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:24:31,377 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:24:31,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 [2023-11-06 22:24:31,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:24:31,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:24:31,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:24:31,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:24:31,795 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:24:31,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2023-11-06 22:24:34,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:24:35,495 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:24:35,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2023-11-06 22:24:35,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/e4d4053de/b3884edee35d4a4da51758032600c64c/FLAG6babe6c65 [2023-11-06 22:24:35,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/data/e4d4053de/b3884edee35d4a4da51758032600c64c [2023-11-06 22:24:35,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:24:35,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:24:35,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:35,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:24:35,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:24:35,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:35" (1/1) ... [2023-11-06 22:24:35,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2718fd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:35, skipping insertion in model container [2023-11-06 22:24:35,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:35" (1/1) ... [2023-11-06 22:24:35,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:37,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:37,842 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:24:37,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:24:38,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:38,174 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:24:38,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:24:38,680 WARN L672 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:24:38,689 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:24:38,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38 WrapperNode [2023-11-06 22:24:38,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:24:38,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:38,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:24:38,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:24:38,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:38,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:38,910 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-06 22:24:38,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:24:38,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:24:38,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:24:38,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:24:38,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:38,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:38,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:38,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,050 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:24:39,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:24:39,074 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:24:39,074 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:24:39,075 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (1/1) ... [2023-11-06 22:24:39,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:24:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:24:39,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:24:39,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:24:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-06 22:24:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-06 22:24:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-06 22:24:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-06 22:24:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:24:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-06 22:24:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:24:39,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:24:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:24:39,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-06 22:24:39,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:24:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 22:24:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-06 22:24:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-06 22:24:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:24:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-06 22:24:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-06 22:24:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-06 22:24:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:24:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-06 22:24:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:24:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-06 22:24:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-06 22:24:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:24:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:24:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:24:39,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 22:24:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-06 22:24:39,181 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-06 22:24:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-06 22:24:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-06 22:24:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:24:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:24:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-06 22:24:39,182 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-06 22:24:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-06 22:24:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:24:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-06 22:24:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:24:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:24:39,185 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:24:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-06 22:24:39,185 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-06 22:24:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:24:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:24:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-06 22:24:39,186 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-06 22:24:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-06 22:24:39,186 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-06 22:24:39,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-06 22:24:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 22:24:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-06 22:24:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:24:39,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:24:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:24:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:24:39,188 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-06 22:24:39,188 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-06 22:24:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-06 22:24:39,189 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-06 22:24:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-06 22:24:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-06 22:24:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-06 22:24:39,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-06 22:24:39,191 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-06 22:24:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-06 22:24:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-06 22:24:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-06 22:24:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-06 22:24:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-06 22:24:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-06 22:24:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-06 22:24:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-06 22:24:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-06 22:24:39,194 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-06 22:24:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-06 22:24:39,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-06 22:24:39,612 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:24:39,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:24:45,892 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:24:45,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:24:45,912 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:24:45,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:45 BoogieIcfgContainer [2023-11-06 22:24:45,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:24:45,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:24:45,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:24:45,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:24:45,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:24:35" (1/3) ... [2023-11-06 22:24:45,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3044413a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:45, skipping insertion in model container [2023-11-06 22:24:45,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:38" (2/3) ... [2023-11-06 22:24:45,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3044413a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:45, skipping insertion in model container [2023-11-06 22:24:45,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:45" (3/3) ... [2023-11-06 22:24:45,929 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb_p.i [2023-11-06 22:24:45,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:24:45,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-06 22:24:46,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:24:46,041 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45f8e7b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:24:46,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-06 22:24:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 665 states, 355 states have (on average 1.819718309859155) internal successors, (646), 566 states have internal predecessors, (646), 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) [2023-11-06 22:24:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:24:46,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:46,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:24:46,060 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)] === [2023-11-06 22:24:46,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:46,070 INFO L85 PathProgramCache]: Analyzing trace with hash 328182463, now seen corresponding path program 1 times [2023-11-06 22:24:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658306787] [2023-11-06 22:24:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:46,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:46,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:46,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:46,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:46,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:46,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658306787] [2023-11-06 22:24:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658306787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:46,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:46,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861346712] [2023-11-06 22:24:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:46,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:46,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:46,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:46,768 INFO L87 Difference]: Start difference. First operand has 665 states, 355 states have (on average 1.819718309859155) internal successors, (646), 566 states have internal predecessors, (646), 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, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-06 22:24:48,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:50,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:24:54,278 INFO L93 Difference]: Finished difference Result 1202 states and 1439 transitions. [2023-11-06 22:24:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:24:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-06 22:24:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:24:54,312 INFO L225 Difference]: With dead ends: 1202 [2023-11-06 22:24:54,317 INFO L226 Difference]: Without dead ends: 1198 [2023-11-06 22:24:54,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:54,324 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 685 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:24:54,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2232 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1098 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-11-06 22:24:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-06 22:24:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 985. [2023-11-06 22:24:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 592 states have (on average 1.802364864864865) internal successors, (1067), 814 states have internal predecessors, (1067), 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) [2023-11-06 22:24:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1343 transitions. [2023-11-06 22:24:54,457 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1343 transitions. Word has length 5 [2023-11-06 22:24:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:24:54,457 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1343 transitions. [2023-11-06 22:24:54,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-06 22:24:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1343 transitions. [2023-11-06 22:24:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:24:54,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:24:54,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:24:54,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:54,673 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)] === [2023-11-06 22:24:54,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash 328182464, now seen corresponding path program 1 times [2023-11-06 22:24:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:54,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804940895] [2023-11-06 22:24:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:54,675 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 [2023-11-06 22:24:54,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:54,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:55,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:24:55,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:55,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:55,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804940895] [2023-11-06 22:24:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804940895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:55,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:55,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:24:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017648234] [2023-11-06 22:24:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:55,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:24:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:24:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:24:55,322 INFO L87 Difference]: Start difference. First operand 985 states and 1343 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-06 22:24:57,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:59,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:02,584 INFO L93 Difference]: Finished difference Result 1117 states and 1435 transitions. [2023-11-06 22:25:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:02,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2023-11-06 22:25:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:02,594 INFO L225 Difference]: With dead ends: 1117 [2023-11-06 22:25:02,594 INFO L226 Difference]: Without dead ends: 1117 [2023-11-06 22:25:02,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:02,596 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 268 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:02,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2604 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-11-06 22:25:02,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-06 22:25:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1058. [2023-11-06 22:25:02,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 633 states have (on average 1.764612954186414) internal successors, (1117), 856 states have internal predecessors, (1117), 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) [2023-11-06 22:25:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1431 transitions. [2023-11-06 22:25:02,652 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1431 transitions. Word has length 5 [2023-11-06 22:25:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:02,652 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1431 transitions. [2023-11-06 22:25:02,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-06 22:25:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1431 transitions. [2023-11-06 22:25:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:25:02,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:02,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:02,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:25:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:02,864 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)] === [2023-11-06 22:25:02,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 466557375, now seen corresponding path program 1 times [2023-11-06 22:25:02,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:02,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551063139] [2023-11-06 22:25:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:02,866 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 [2023-11-06 22:25:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:02,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:25:02,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:25:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:03,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:25:03,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:03,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:03,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:03,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551063139] [2023-11-06 22:25:03,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551063139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:03,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:03,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:03,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929294075] [2023-11-06 22:25:03,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:25:03,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:25:03,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:03,457 INFO L87 Difference]: Start difference. First operand 1058 states and 1431 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-06 22:25:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:05,196 INFO L93 Difference]: Finished difference Result 1264 states and 1518 transitions. [2023-11-06 22:25:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:25:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2023-11-06 22:25:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:05,205 INFO L225 Difference]: With dead ends: 1264 [2023-11-06 22:25:05,205 INFO L226 Difference]: Without dead ends: 1264 [2023-11-06 22:25:05,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:25:05,207 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 658 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:05,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1234 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:25:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-06 22:25:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1057. [2023-11-06 22:25:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 633 states have (on average 1.7567140600315956) internal successors, (1112), 855 states have internal predecessors, (1112), 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) [2023-11-06 22:25:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1426 transitions. [2023-11-06 22:25:05,253 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1426 transitions. Word has length 11 [2023-11-06 22:25:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:05,253 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1426 transitions. [2023-11-06 22:25:05,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-06 22:25:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1426 transitions. [2023-11-06 22:25:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:25:05,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:05,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:05,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:25:05,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:05,470 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)] === [2023-11-06 22:25:05,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash 466557376, now seen corresponding path program 1 times [2023-11-06 22:25:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088003411] [2023-11-06 22:25:05,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:05,473 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 [2023-11-06 22:25:05,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:05,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:25:05,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:25:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:05,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:25:05,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:06,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:25:06,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:06,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088003411] [2023-11-06 22:25:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088003411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:06,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:06,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:25:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670232481] [2023-11-06 22:25:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:06,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:25:06,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:25:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:25:06,182 INFO L87 Difference]: Start difference. First operand 1057 states and 1426 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-06 22:25:08,214 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 [] [2023-11-06 22:25:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:10,252 INFO L93 Difference]: Finished difference Result 1123 states and 1441 transitions. [2023-11-06 22:25:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:25:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2023-11-06 22:25:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:10,261 INFO L225 Difference]: With dead ends: 1123 [2023-11-06 22:25:10,261 INFO L226 Difference]: Without dead ends: 1123 [2023-11-06 22:25:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:25:10,264 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 268 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:10,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1503 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 411 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:25:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-11-06 22:25:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1060. [2023-11-06 22:25:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 636 states have (on average 1.7531446540880504) internal successors, (1115), 858 states have internal predecessors, (1115), 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) [2023-11-06 22:25:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1429 transitions. [2023-11-06 22:25:10,310 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1429 transitions. Word has length 11 [2023-11-06 22:25:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:10,310 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1429 transitions. [2023-11-06 22:25:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-06 22:25:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1429 transitions. [2023-11-06 22:25:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:25:10,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:10,312 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:10,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:25:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:10,532 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)] === [2023-11-06 22:25:10,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 696886511, now seen corresponding path program 1 times [2023-11-06 22:25:10,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:10,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223193830] [2023-11-06 22:25:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:10,534 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 [2023-11-06 22:25:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:10,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:25:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:25:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:11,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:25:11,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:11,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:11,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:11,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223193830] [2023-11-06 22:25:11,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223193830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:11,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:11,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-11-06 22:25:11,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306339603] [2023-11-06 22:25:11,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:11,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:25:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:25:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:25:11,699 INFO L87 Difference]: Start difference. First operand 1060 states and 1429 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:25:13,728 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 [] [2023-11-06 22:25:15,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:17,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:19,742 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 [] [2023-11-06 22:25:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:27,626 INFO L93 Difference]: Finished difference Result 1333 states and 1675 transitions. [2023-11-06 22:25:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:25:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-06 22:25:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:27,635 INFO L225 Difference]: With dead ends: 1333 [2023-11-06 22:25:27,636 INFO L226 Difference]: Without dead ends: 1333 [2023-11-06 22:25:27,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:25:27,637 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 566 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:27,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 3886 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1749 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2023-11-06 22:25:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-06 22:25:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1207. [2023-11-06 22:25:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 740 states have (on average 1.7391891891891893) internal successors, (1287), 964 states have internal predecessors, (1287), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:25:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1655 transitions. [2023-11-06 22:25:27,683 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1655 transitions. Word has length 14 [2023-11-06 22:25:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:27,683 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 1655 transitions. [2023-11-06 22:25:27,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:25:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1655 transitions. [2023-11-06 22:25:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 22:25:27,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:27,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:27,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:27,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:27,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:25:27,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash -435447830, now seen corresponding path program 1 times [2023-11-06 22:25:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412158459] [2023-11-06 22:25:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:27,902 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 [2023-11-06 22:25:27,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:27,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:25:27,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:25:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:28,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:25:28,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:28,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:28,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412158459] [2023-11-06 22:25:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412158459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:28,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:25:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078476264] [2023-11-06 22:25:28,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:25:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:25:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:25:28,572 INFO L87 Difference]: Start difference. First operand 1207 states and 1655 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2023-11-06 22:25:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:25:28,838 INFO L93 Difference]: Finished difference Result 1213 states and 1659 transitions. [2023-11-06 22:25:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:25:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 19 [2023-11-06 22:25:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:25:28,846 INFO L225 Difference]: With dead ends: 1213 [2023-11-06 22:25:28,846 INFO L226 Difference]: Without dead ends: 1213 [2023-11-06 22:25:28,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:25:28,847 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 22 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 4667 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:25:28,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 4667 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:25:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-06 22:25:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1212. [2023-11-06 22:25:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 745 states have (on average 1.7328859060402684) internal successors, (1291), 969 states have internal predecessors, (1291), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:25:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1659 transitions. [2023-11-06 22:25:28,889 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1659 transitions. Word has length 19 [2023-11-06 22:25:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:25:28,890 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1659 transitions. [2023-11-06 22:25:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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) [2023-11-06 22:25:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1659 transitions. [2023-11-06 22:25:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:25:28,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:25:28,892 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:28,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:25:29,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:25:29,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1491950848, now seen corresponding path program 2 times [2023-11-06 22:25:29,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:25:29,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366765815] [2023-11-06 22:25:29,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:29,133 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 [2023-11-06 22:25:29,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:25:29,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:25:29,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:25:29,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:29,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:29,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:25:29,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:30,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:31,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:25:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366765815] [2023-11-06 22:25:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366765815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:31,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-11-06 22:25:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26827475] [2023-11-06 22:25:31,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:31,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:25:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:25:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:25:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:25:31,312 INFO L87 Difference]: Start difference. First operand 1212 states and 1659 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:25:33,341 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 [] [2023-11-06 22:25:35,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:37,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:39,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:41,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:43,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:45,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:47,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:49,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:51,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:25:53,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:06,260 INFO L93 Difference]: Finished difference Result 1290 states and 1689 transitions. [2023-11-06 22:26:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:26:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-06 22:26:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:06,267 INFO L225 Difference]: With dead ends: 1290 [2023-11-06 22:26:06,268 INFO L226 Difference]: Without dead ends: 1290 [2023-11-06 22:26:06,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=229, Invalid=371, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:26:06,269 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 293 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 24 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 5501 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:06,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 5501 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2347 Invalid, 11 Unknown, 0 Unchecked, 33.4s Time] [2023-11-06 22:26:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-11-06 22:26:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1225. [2023-11-06 22:26:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 758 states have (on average 1.7242744063324538) internal successors, (1307), 982 states have internal predecessors, (1307), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1675 transitions. [2023-11-06 22:26:06,310 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1675 transitions. Word has length 23 [2023-11-06 22:26:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:06,311 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1675 transitions. [2023-11-06 22:26:06,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:26:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1675 transitions. [2023-11-06 22:26:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:26:06,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:06,313 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:06,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:06,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:06,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:06,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 525507370, now seen corresponding path program 2 times [2023-11-06 22:26:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:06,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176862560] [2023-11-06 22:26:06,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:06,529 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 [2023-11-06 22:26:06,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:06,531 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:26:06,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:26:06,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:26:06,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:07,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:26:07,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-06 22:26:07,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:07,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176862560] [2023-11-06 22:26:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176862560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:07,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:07,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:26:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419005641] [2023-11-06 22:26:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:07,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:07,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:07,219 INFO L87 Difference]: Start difference. First operand 1225 states and 1675 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-06 22:26:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:08,801 INFO L93 Difference]: Finished difference Result 1433 states and 1768 transitions. [2023-11-06 22:26:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 31 [2023-11-06 22:26:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:08,809 INFO L225 Difference]: With dead ends: 1433 [2023-11-06 22:26:08,809 INFO L226 Difference]: Without dead ends: 1433 [2023-11-06 22:26:08,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:08,810 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 644 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:08,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1232 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:26:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-11-06 22:26:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1223. [2023-11-06 22:26:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 758 states have (on average 1.712401055408971) internal successors, (1298), 980 states have internal predecessors, (1298), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1666 transitions. [2023-11-06 22:26:08,851 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1666 transitions. Word has length 31 [2023-11-06 22:26:08,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:08,851 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1666 transitions. [2023-11-06 22:26:08,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-11-06 22:26:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1666 transitions. [2023-11-06 22:26:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:26:08,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:08,853 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:08,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:09,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:09,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:09,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 525507371, now seen corresponding path program 1 times [2023-11-06 22:26:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752656152] [2023-11-06 22:26:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:09,070 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 [2023-11-06 22:26:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:09,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:26:09,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:26:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:09,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:09,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:09,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:09,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752656152] [2023-11-06 22:26:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752656152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-06 22:26:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352661701] [2023-11-06 22:26:09,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:09,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:09,952 INFO L87 Difference]: Start difference. First operand 1223 states and 1666 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 22:26:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:10,500 INFO L93 Difference]: Finished difference Result 1223 states and 1662 transitions. [2023-11-06 22:26:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:26:10,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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 31 [2023-11-06 22:26:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:10,509 INFO L225 Difference]: With dead ends: 1223 [2023-11-06 22:26:10,509 INFO L226 Difference]: Without dead ends: 1223 [2023-11-06 22:26:10,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:26:10,510 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 53 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:10,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 6213 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2023-11-06 22:26:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2023-11-06 22:26:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 758 states have (on average 1.7071240105540897) internal successors, (1294), 980 states have internal predecessors, (1294), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:26:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1662 transitions. [2023-11-06 22:26:10,550 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1662 transitions. Word has length 31 [2023-11-06 22:26:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:10,550 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1662 transitions. [2023-11-06 22:26:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-11-06 22:26:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1662 transitions. [2023-11-06 22:26:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:26:10,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:10,552 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:10,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-06 22:26:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:26:10,768 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:26:10,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash 642735584, now seen corresponding path program 3 times [2023-11-06 22:26:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:26:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149522592] [2023-11-06 22:26:10,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:10,769 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 [2023-11-06 22:26:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:26:10,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:26:10,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:26:11,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-06 22:26:11,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:11,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:26:11,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:12,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:26:15,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:26:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149522592] [2023-11-06 22:26:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149522592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:15,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-11-06 22:26:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323078918] [2023-11-06 22:26:15,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:15,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:26:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:26:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:26:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:26:15,430 INFO L87 Difference]: Start difference. First operand 1223 states and 1662 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:26:17,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:19,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:21,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:23,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:25,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:27,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:29,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:31,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:33,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:35,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:37,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:39,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:41,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:43,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:45,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:47,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:49,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:51,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:53,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:55,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:57,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:26:59,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:01,574 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 [] [2023-11-06 22:27:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:23,333 INFO L93 Difference]: Finished difference Result 1279 states and 1673 transitions. [2023-11-06 22:27:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:27:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-06 22:27:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:23,340 INFO L225 Difference]: With dead ends: 1279 [2023-11-06 22:27:23,340 INFO L226 Difference]: Without dead ends: 1279 [2023-11-06 22:27:23,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:27:23,342 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 249 mSDsluCounter, 8237 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 8 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 4460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:23,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 9060 Invalid, 4460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 4429 Invalid, 23 Unknown, 0 Unchecked, 67.7s Time] [2023-11-06 22:27:23,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-06 22:27:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1221. [2023-11-06 22:27:23,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 757 states have (on average 1.7054161162483488) internal successors, (1291), 978 states have internal predecessors, (1291), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:27:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1659 transitions. [2023-11-06 22:27:23,381 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1659 transitions. Word has length 41 [2023-11-06 22:27:23,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1659 transitions. [2023-11-06 22:27:23,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:27:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1659 transitions. [2023-11-06 22:27:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:27:23,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:23,383 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:23,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:23,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:27:23,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash -806437269, now seen corresponding path program 2 times [2023-11-06 22:27:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:23,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139157303] [2023-11-06 22:27:23,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:23,602 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 [2023-11-06 22:27:23,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:23,604 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:27:23,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:27:24,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:27:24,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:24,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:24,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 22:27:24,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:24,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:27:24,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139157303] [2023-11-06 22:27:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139157303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:24,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677911962] [2023-11-06 22:27:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:24,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:27:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:24,728 INFO L87 Difference]: Start difference. First operand 1221 states and 1659 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:27:26,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:29,143 INFO L93 Difference]: Finished difference Result 1277 states and 1671 transitions. [2023-11-06 22:27:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 43 [2023-11-06 22:27:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:29,152 INFO L225 Difference]: With dead ends: 1277 [2023-11-06 22:27:29,152 INFO L226 Difference]: Without dead ends: 1277 [2023-11-06 22:27:29,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:29,154 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 234 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:29,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1964 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 572 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:27:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-06 22:27:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1219. [2023-11-06 22:27:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 757 states have (on average 1.702774108322325) internal successors, (1289), 976 states have internal predecessors, (1289), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:27:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-11-06 22:27:29,193 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 43 [2023-11-06 22:27:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:29,193 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-11-06 22:27:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-06 22:27:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-11-06 22:27:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:27:29,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:29,195 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:29,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:29,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:29,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:27:29,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -856983900, now seen corresponding path program 1 times [2023-11-06 22:27:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:29,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682636459] [2023-11-06 22:27:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:29,413 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 [2023-11-06 22:27:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:29,414 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:27:29,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:27:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:30,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:27:30,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:30,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:27:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:27:30,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:30,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:27:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682636459] [2023-11-06 22:27:30,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682636459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:30,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875093999] [2023-11-06 22:27:30,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:27:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:30,138 INFO L87 Difference]: Start difference. First operand 1219 states and 1657 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:27:32,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:33,041 INFO L93 Difference]: Finished difference Result 1218 states and 1656 transitions. [2023-11-06 22:27:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-06 22:27:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:33,049 INFO L225 Difference]: With dead ends: 1218 [2023-11-06 22:27:33,049 INFO L226 Difference]: Without dead ends: 1218 [2023-11-06 22:27:33,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:33,050 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 2 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:33,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1358 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:27:33,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2023-11-06 22:27:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2023-11-06 22:27:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 757 states have (on average 1.701453104359313) internal successors, (1288), 975 states have internal predecessors, (1288), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:27:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1656 transitions. [2023-11-06 22:27:33,085 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1656 transitions. Word has length 67 [2023-11-06 22:27:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:33,086 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1656 transitions. [2023-11-06 22:27:33,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:27:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1656 transitions. [2023-11-06 22:27:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:27:33,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:33,088 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:33,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:33,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:27:33,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -856983899, now seen corresponding path program 1 times [2023-11-06 22:27:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466542481] [2023-11-06 22:27:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:33,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:33,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:27:33,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:27:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:33,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:27:33,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:34,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 22:27:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:27:34,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:34,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:27:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466542481] [2023-11-06 22:27:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466542481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:34,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041836886] [2023-11-06 22:27:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:34,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:27:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:27:34,206 INFO L87 Difference]: Start difference. First operand 1218 states and 1656 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:27:36,238 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 [] [2023-11-06 22:27:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:37,543 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-11-06 22:27:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-06 22:27:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:37,549 INFO L225 Difference]: With dead ends: 1217 [2023-11-06 22:27:37,549 INFO L226 Difference]: Without dead ends: 1217 [2023-11-06 22:27:37,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:27:37,550 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 748 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:37,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1357 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 22:27:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-06 22:27:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-11-06 22:27:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 757 states have (on average 1.6988110964332892) internal successors, (1286), 974 states have internal predecessors, (1286), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-06 22:27:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-11-06 22:27:37,584 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-11-06 22:27:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:37,585 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-11-06 22:27:37,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:27:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-11-06 22:27:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:27:37,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:37,587 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:37,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-06 22:27:37,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:37,803 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr164ASSERT_VIOLATIONMEMORY_LEAK === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:27:37,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash -641761608, now seen corresponding path program 1 times [2023-11-06 22:27:37,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:37,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543440247] [2023-11-06 22:27:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:37,805 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 [2023-11-06 22:27:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:37,807 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:27:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:27:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:38,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:27:38,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:27:38,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:38,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:27:38,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543440247] [2023-11-06 22:27:38,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543440247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:38,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:38,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:38,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305525596] [2023-11-06 22:27:38,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:38,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:38,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:27:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:38,590 INFO L87 Difference]: Start difference. First operand 1217 states and 1654 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:27:40,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:27:41,581 INFO L93 Difference]: Finished difference Result 1258 states and 1663 transitions. [2023-11-06 22:27:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2023-11-06 22:27:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:27:41,588 INFO L225 Difference]: With dead ends: 1258 [2023-11-06 22:27:41,588 INFO L226 Difference]: Without dead ends: 1246 [2023-11-06 22:27:41,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:41,589 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 93 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:27:41,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1315 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:27:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2023-11-06 22:27:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1213. [2023-11-06 22:27:41,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 755 states have (on average 1.6993377483443708) internal successors, (1283), 972 states have internal predecessors, (1283), 183 states have call successors, (183), 79 states have call predecessors, (183), 78 states have return successors, (181), 174 states have call predecessors, (181), 181 states have call successors, (181) [2023-11-06 22:27:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1647 transitions. [2023-11-06 22:27:41,631 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1647 transitions. Word has length 74 [2023-11-06 22:27:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:27:41,631 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1647 transitions. [2023-11-06 22:27:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:27:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1647 transitions. [2023-11-06 22:27:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:27:41,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:27:41,633 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:41,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:27:41,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:27:41,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:27:41,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1271061945, now seen corresponding path program 1 times [2023-11-06 22:27:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:27:41,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119015492] [2023-11-06 22:27:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:41,851 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 [2023-11-06 22:27:41,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:27:41,852 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:27:41,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:27:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:42,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:27:42,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:43,512 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:27:43,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:27:43,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:27:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:27:43,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:43,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:27:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119015492] [2023-11-06 22:27:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119015492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [645398149] [2023-11-06 22:27:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:43,817 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:27:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:27:43,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:27:43,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-06 22:27:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:27:46,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:46,923 INFO L322 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-06 22:27:46,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-06 22:27:47,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2023-11-06 22:27:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:27:47,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [645398149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:47,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:27:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:27:47,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139871612] [2023-11-06 22:27:47,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:27:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:27:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:27:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:27:47,356 INFO L87 Difference]: Start difference. First operand 1213 states and 1647 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:27:49,390 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 [] [2023-11-06 22:27:51,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:53,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:55,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:57,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:27:59,415 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 [] [2023-11-06 22:28:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:04,680 INFO L93 Difference]: Finished difference Result 1745 states and 2283 transitions. [2023-11-06 22:28:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:28:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 76 [2023-11-06 22:28:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:04,690 INFO L225 Difference]: With dead ends: 1745 [2023-11-06 22:28:04,691 INFO L226 Difference]: Without dead ends: 1745 [2023-11-06 22:28:04,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:28:04,692 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 752 mSDsluCounter, 2853 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:04,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 3506 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2113 Invalid, 6 Unknown, 0 Unchecked, 17.2s Time] [2023-11-06 22:28:04,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2023-11-06 22:28:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1522. [2023-11-06 22:28:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 984 states have (on average 1.728658536585366) internal successors, (1701), 1213 states have internal predecessors, (1701), 241 states have call successors, (241), 101 states have call predecessors, (241), 100 states have return successors, (239), 225 states have call predecessors, (239), 239 states have call successors, (239) [2023-11-06 22:28:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2181 transitions. [2023-11-06 22:28:04,735 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2181 transitions. Word has length 76 [2023-11-06 22:28:04,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:04,736 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2181 transitions. [2023-11-06 22:28:04,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:28:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2181 transitions. [2023-11-06 22:28:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:28:04,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:04,738 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:04,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:04,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt [2023-11-06 22:28:05,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:28:05,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1271061944, now seen corresponding path program 1 times [2023-11-06 22:28:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:28:05,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135720033] [2023-11-06 22:28:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:05,153 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 [2023-11-06 22:28:05,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:28:05,154 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:28:05,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:28:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:06,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:28:06,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:07,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:28:07,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:28:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:28:07,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:08,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:28:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135720033] [2023-11-06 22:28:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135720033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969991927] [2023-11-06 22:28:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:28:08,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:28:08,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:28:08,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-06 22:28:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:10,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:28:10,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:28:11,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:28:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 22:28:11,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:12,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [969991927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:12,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:28:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-06 22:28:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78822680] [2023-11-06 22:28:12,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:12,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:28:12,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:28:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:28:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:28:12,205 INFO L87 Difference]: Start difference. First operand 1522 states and 2181 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:28:14,238 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 [] [2023-11-06 22:28:16,242 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 [] [2023-11-06 22:28:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:22,269 INFO L93 Difference]: Finished difference Result 1945 states and 2506 transitions. [2023-11-06 22:28:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:28:22,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2023-11-06 22:28:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:22,279 INFO L225 Difference]: With dead ends: 1945 [2023-11-06 22:28:22,280 INFO L226 Difference]: Without dead ends: 1945 [2023-11-06 22:28:22,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:28:22,282 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 968 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:22,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2063 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1887 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2023-11-06 22:28:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2023-11-06 22:28:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1699. [2023-11-06 22:28:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1119 states have (on average 1.737265415549598) internal successors, (1944), 1344 states have internal predecessors, (1944), 268 states have call successors, (268), 116 states have call predecessors, (268), 115 states have return successors, (266), 257 states have call predecessors, (266), 266 states have call successors, (266) [2023-11-06 22:28:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2478 transitions. [2023-11-06 22:28:22,349 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2478 transitions. Word has length 76 [2023-11-06 22:28:22,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:22,350 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2478 transitions. [2023-11-06 22:28:22,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:28:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2478 transitions. [2023-11-06 22:28:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:28:22,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:22,356 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:22,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:22,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:28:22,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:28:22,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1980893507, now seen corresponding path program 1 times [2023-11-06 22:28:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:28:22,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016885894] [2023-11-06 22:28:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:22,771 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 [2023-11-06 22:28:22,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:28:22,772 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:28:22,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:28:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:23,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:28:23,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:28:23,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:28:23,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:28:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016885894] [2023-11-06 22:28:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016885894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:23,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:23,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889622667] [2023-11-06 22:28:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:28:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:23,473 INFO L87 Difference]: Start difference. First operand 1699 states and 2478 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:28:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:23,529 INFO L93 Difference]: Finished difference Result 1338 states and 1886 transitions. [2023-11-06 22:28:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2023-11-06 22:28:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:23,536 INFO L225 Difference]: With dead ends: 1338 [2023-11-06 22:28:23,536 INFO L226 Difference]: Without dead ends: 1333 [2023-11-06 22:28:23,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:28:23,537 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 3 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:23,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3131 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-06 22:28:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1333. [2023-11-06 22:28:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 859 states have (on average 1.7415599534342259) internal successors, (1496), 1071 states have internal predecessors, (1496), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-11-06 22:28:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1880 transitions. [2023-11-06 22:28:23,571 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1880 transitions. Word has length 81 [2023-11-06 22:28:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:23,572 INFO L495 AbstractCegarLoop]: Abstraction has 1333 states and 1880 transitions. [2023-11-06 22:28:23,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:28:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1880 transitions. [2023-11-06 22:28:23,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 22:28:23,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:23,573 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:23,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:28:23,789 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-06 22:28:23,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -425223700, now seen corresponding path program 1 times [2023-11-06 22:28:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:28:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961447955] [2023-11-06 22:28:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:23,791 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 [2023-11-06 22:28:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:28:23,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:28:23,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:28:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:25,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:28:25,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:25,584 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:28:25,584 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:28:25,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:28:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-06 22:28:25,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:25,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:28:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961447955] [2023-11-06 22:28:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961447955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [575551268] [2023-11-06 22:28:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:25,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-06 22:28:25,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 [2023-11-06 22:28:25,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-06 22:28:25,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ea34e92-4c84-4059-a8f1-1e9a5c4fdaaf/bin/uautomizer-verify-WvqO1wxjHP/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process