./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-17 22:47:27,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 22:47:27,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-17 22:47:27,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-17 22:47:27,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-17 22:47:27,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 22:47:27,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-17 22:47:27,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-17 22:47:27,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 22:47:27,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 22:47:27,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 22:47:27,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 22:47:27,998 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 22:47:27,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 22:47:28,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 22:47:28,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 22:47:28,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 22:47:28,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 22:47:28,003 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-17 22:47:28,003 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-17 22:47:28,003 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-17 22:47:28,004 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 22:47:28,005 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-17 22:47:28,005 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-17 22:47:28,006 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 22:47:28,006 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 22:47:28,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 22:47:28,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 22:47:28,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 22:47:28,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:47:28,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 22:47:28,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 22:47:28,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 22:47:28,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 22:47:28,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-17 22:47:28,012 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-17 22:47:28,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-17 22:47:28,012 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-17 22:47:28,012 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-17 22:47:28,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2023-11-17 22:47:28,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 22:47:28,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 22:47:28,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 22:47:28,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 22:47:28,367 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 22:47:28,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2023-11-17 22:47:31,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 22:47:31,780 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 22:47:31,781 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2023-11-17 22:47:31,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/c5701919e/b0c3d64bd48f417ca0447d184ef0821c/FLAGdb5019f93 [2023-11-17 22:47:31,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/c5701919e/b0c3d64bd48f417ca0447d184ef0821c [2023-11-17 22:47:31,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 22:47:31,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-17 22:47:31,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:31,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 22:47:31,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 22:47:31,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:31" (1/1) ... [2023-11-17 22:47:31,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32269572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:31, skipping insertion in model container [2023-11-17 22:47:31,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:31" (1/1) ... [2023-11-17 22:47:31,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 22:47:32,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:32,047 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) [2023-11-17 22:47:32,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e0921bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:32, skipping insertion in model container [2023-11-17 22:47:32,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:32,048 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-17 22:47:32,050 INFO L158 Benchmark]: Toolchain (without parser) took 241.66ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 86.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-17 22:47:32,051 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-17 22:47:32,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.97ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 86.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-17 22:47:32,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.97ms. Allocated memory is still 142.6MB. Free memory was 96.1MB in the beginning and 86.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 107]: 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_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-17 22:47:34,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 22:47:34,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Bitvector.epf [2023-11-17 22:47:34,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-17 22:47:34,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-17 22:47:34,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 22:47:34,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-17 22:47:34,700 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-17 22:47:34,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 22:47:34,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 22:47:34,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 22:47:34,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 22:47:34,708 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 22:47:34,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 22:47:34,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 22:47:34,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 22:47:34,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 22:47:34,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 22:47:34,712 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-17 22:47:34,713 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-17 22:47:34,713 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-17 22:47:34,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 22:47:34,714 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-17 22:47:34,715 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-17 22:47:34,715 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-17 22:47:34,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-17 22:47:34,716 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 22:47:34,716 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 22:47:34,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 22:47:34,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 22:47:34,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 22:47:34,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:47:34,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 22:47:34,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 22:47:34,720 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-17 22:47:34,720 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-17 22:47:34,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-17 22:47:34,721 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-17 22:47:34,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-17 22:47:34,722 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-17 22:47:34,722 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-17 22:47:34,723 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-17 22:47:34,723 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2023-11-17 22:47:35,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 22:47:35,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 22:47:35,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 22:47:35,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 22:47:35,199 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 22:47:35,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2023-11-17 22:47:38,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 22:47:38,655 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 22:47:38,656 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2023-11-17 22:47:38,667 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/2b011398f/6e8d1174075b4214959009e9dea12228/FLAG8c5344e7b [2023-11-17 22:47:38,684 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/data/2b011398f/6e8d1174075b4214959009e9dea12228 [2023-11-17 22:47:38,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 22:47:38,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-17 22:47:38,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:38,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 22:47:38,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 22:47:38,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:38" (1/1) ... [2023-11-17 22:47:38,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cba1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:38, skipping insertion in model container [2023-11-17 22:47:38,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:38" (1/1) ... [2023-11-17 22:47:38,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 22:47:38,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:39,008 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-17 22:47:39,015 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 22:47:39,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:39,041 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 22:47:39,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:39,100 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 22:47:39,103 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 22:47:39,110 INFO L206 MainTranslator]: Completed translation [2023-11-17 22:47:39,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39 WrapperNode [2023-11-17 22:47:39,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:39,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 22:47:39,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 22:47:39,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 22:47:39,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,186 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 159 [2023-11-17 22:47:39,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 22:47:39,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 22:47:39,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 22:47:39,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 22:47:39,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 22:47:39,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 22:47:39,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 22:47:39,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 22:47:39,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (1/1) ... [2023-11-17 22:47:39,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:47:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:39,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 22:47:39,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 22:47:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 22:47:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-17 22:47:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 22:47:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-17 22:47:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 22:47:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 22:47:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 22:47:39,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 22:47:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 22:47:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 22:47:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 22:47:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 22:47:39,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 22:47:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 22:47:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-17 22:47:39,360 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 22:47:39,533 INFO L236 CfgBuilder]: Building ICFG [2023-11-17 22:47:39,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 22:47:40,069 INFO L277 CfgBuilder]: Performing block encoding [2023-11-17 22:47:40,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 22:47:40,267 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 22:47:40,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:47:40 BoogieIcfgContainer [2023-11-17 22:47:40,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 22:47:40,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 22:47:40,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 22:47:40,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 22:47:40,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 10:47:38" (1/3) ... [2023-11-17 22:47:40,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4d58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:47:40, skipping insertion in model container [2023-11-17 22:47:40,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:39" (2/3) ... [2023-11-17 22:47:40,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db4d58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:47:40, skipping insertion in model container [2023-11-17 22:47:40,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:47:40" (3/3) ... [2023-11-17 22:47:40,280 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2023-11-17 22:47:40,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 22:47:40,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-17 22:47:40,296 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 22:47:40,390 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 22:47:40,451 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:40,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-17 22:47:40,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:40,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-17 22:47:40,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-17 22:47:40,519 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-17 22:47:40,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thread2Thread1of1ForFork1 ======== [2023-11-17 22:47:40,543 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=PARTIAL_ORDER_FA, 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;@252710d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:40,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-17 22:47:40,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:40,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2020627369, now seen corresponding path program 1 times [2023-11-17 22:47:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006314292] [2023-11-17 22:47:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:40,966 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 [2023-11-17 22:47:40,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:41,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:41,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:41,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-17 22:47:41,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:41,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:41,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:47:41,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006314292] [2023-11-17 22:47:41,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006314292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:41,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:41,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 22:47:41,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538727991] [2023-11-17 22:47:41,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 22:47:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:47:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 22:47:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 22:47:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:41,302 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:41,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:47:41,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:41,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:47:41,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:41,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2088020955, now seen corresponding path program 1 times [2023-11-17 22:47:41,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:41,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276890970] [2023-11-17 22:47:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:41,579 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 [2023-11-17 22:47:41,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:41,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:41,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:41,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 22:47:41,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:41,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-17 22:47:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:41,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:41,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:47:41,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276890970] [2023-11-17 22:47:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276890970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 22:47:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884825295] [2023-11-17 22:47:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 22:47:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:47:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 22:47:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 22:47:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:41,898 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:41,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:47:41,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:41,899 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:42,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:42,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:47:42,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:42,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2088020954, now seen corresponding path program 1 times [2023-11-17 22:47:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688168787] [2023-11-17 22:47:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:42,482 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 [2023-11-17 22:47:42,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:42,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:42,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:42,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-17 22:47:42,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:42,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:42,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:47:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688168787] [2023-11-17 22:47:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688168787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 22:47:42,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536822183] [2023-11-17 22:47:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:42,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:42,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:47:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:47:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,741 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:42,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 37.5) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:47:42,742 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,742 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:42,743 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:43,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:47:43,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:43,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1079768965, now seen corresponding path program 1 times [2023-11-17 22:47:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:43,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419164992] [2023-11-17 22:47:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:43,797 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 [2023-11-17 22:47:43,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:43,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:43,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:43,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 22:47:43,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:44,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:44,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:47:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419164992] [2023-11-17 22:47:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419164992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:44,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-17 22:47:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878156118] [2023-11-17 22:47:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:44,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 22:47:44,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:47:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 22:47:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-17 22:47:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:44,549 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:44,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:47:44,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:44,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:44,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:47:45,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:47:46,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:46,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:46,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1211104910, now seen corresponding path program 1 times [2023-11-17 22:47:46,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136245949] [2023-11-17 22:47:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:46,134 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 [2023-11-17 22:47:46,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:46,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:46,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:46,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 22:47:46,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:47,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:49,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:47:49,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136245949] [2023-11-17 22:47:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136245949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:49,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 22:47:49,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 29 [2023-11-17 22:47:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694658911] [2023-11-17 22:47:49,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:49,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 22:47:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:47:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 22:47:49,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=574, Unknown=0, NotChecked=0, Total=870 [2023-11-17 22:47:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:49,725 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:49,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.517241379310345) internal successors, (160), 30 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:47:49,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:49,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:49,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:49,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:47:49,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:47:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:47:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 22:47:52,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:52,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:47:52,517 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:47:52,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1852992985, now seen corresponding path program 1 times [2023-11-17 22:47:52,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:47:52,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401108620] [2023-11-17 22:47:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:52,518 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 [2023-11-17 22:47:52,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:47:52,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:47:52,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:47:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:52,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 22:47:52,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:53,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-17 22:47:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:55,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:48:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:48:06,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:48:06,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401108620] [2023-11-17 22:48:06,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401108620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:48:06,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 22:48:06,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2023-11-17 22:48:06,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960228078] [2023-11-17 22:48:06,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 22:48:06,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 22:48:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:48:06,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 22:48:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=1934, Unknown=0, NotChecked=0, Total=2352 [2023-11-17 22:48:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:06,779 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:48:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.8333333333333335) internal successors, (184), 49 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:48:06,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:06,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:48:06,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:06,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:48:06,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-11-17 22:48:06,781 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:48:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:48:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 22:48:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-17 22:48:26,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:48:26,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-17 22:48:26,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE] === [2023-11-17 22:48:26,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:48:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 611469242, now seen corresponding path program 2 times [2023-11-17 22:48:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-17 22:48:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847812623] [2023-11-17 22:48:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 22:48:26,949 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 [2023-11-17 22:48:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat [2023-11-17 22:48:26,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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) [2023-11-17 22:48:26,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a2bc854-ffee-4370-b4d4-58f4a0928d7c/bin/ugemcutter-verify-ztSkJzofpW/mathsat -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 [2023-11-17 22:48:27,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 22:48:27,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 22:48:27,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 22:48:27,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:48:27,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-17 22:48:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-17 22:48:28,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:48:28,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-17 22:48:28,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847812623] [2023-11-17 22:48:28,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847812623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:48:28,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:48:28,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-17 22:48:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298067303] [2023-11-17 22:48:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:48:28,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 22:48:28,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-17 22:48:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 22:48:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-17 22:48:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:28,393 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:48:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 22:48:28,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:28,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2023-11-17 22:48:28,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:28,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2023-11-17 22:48:28,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2023-11-17 22:48:28,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 46 states. [2023-11-17 22:48:28,395 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.