./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:20:55,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:20:55,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:20:55,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:20:55,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:20:55,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:20:55,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:20:55,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:20:55,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:20:55,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:20:55,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:20:55,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:20:55,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:20:55,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:20:55,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:20:55,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:20:55,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:20:55,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:20:55,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:20:55,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:20:55,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:20:55,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:20:55,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:20:55,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:20:55,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:20:55,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:20:55,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:20:55,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:20:55,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:20:55,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:20:55,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:20:55,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:20:55,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:20:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:20:55,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:20:55,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:20:55,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:20:55,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:20:55,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:20:55,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:20:55,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:20:55,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 16:20:55,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:20:55,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:20:55,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:20:55,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:20:55,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:20:55,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:20:55,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:20:55,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:20:55,946 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:20:55,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:20:55,946 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:20:55,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:20:55,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:20:55,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:20:55,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:20:55,947 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:20:55,947 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:20:55,948 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:20:55,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:20:55,948 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:20:55,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:20:55,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:20:55,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:20:55,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:20:55,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:20:55,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:20:55,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:20:55,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:20:55,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:20:55,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:20:55,950 INFO L138 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_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-21 16:20:56,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:20:56,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:20:56,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:20:56,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:20:56,323 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:20:56,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 16:20:59,477 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:20:59,748 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:20:59,750 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 16:20:59,764 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/0325da363/2bbddea7e04e4c078a20929fb0cb8b9e/FLAG34bd29799 [2022-11-21 16:20:59,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/0325da363/2bbddea7e04e4c078a20929fb0cb8b9e [2022-11-21 16:20:59,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:20:59,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:20:59,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:20:59,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:20:59,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:20:59,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:20:59" (1/1) ... [2022-11-21 16:20:59,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d035ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:20:59, skipping insertion in model container [2022-11-21 16:20:59,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:20:59" (1/1) ... [2022-11-21 16:20:59,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:20:59,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:21:00,188 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 16:21:00,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:00,236 ERROR L326 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) [2022-11-21 16:21:00,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40d77cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:00, skipping insertion in model container [2022-11-21 16:21:00,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:00,238 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 16:21:00,240 INFO L158 Benchmark]: Toolchain (without parser) took 435.91ms. Allocated memory is still 153.1MB. Free memory was 112.9MB in the beginning and 120.0MB in the end (delta: -7.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:21:00,241 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:21:00,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.80ms. Allocated memory is still 153.1MB. Free memory was 112.9MB in the beginning and 120.0MB in the end (delta: -7.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:21:00,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 432.80ms. Allocated memory is still 153.1MB. Free memory was 112.9MB in the beginning and 120.0MB in the end (delta: -7.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 160]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:21:02,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:21:02,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:21:02,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:21:02,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:21:02,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:21:02,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:21:02,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:21:02,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:21:02,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:21:02,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:21:02,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:21:02,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:21:02,791 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:21:02,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:21:02,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:21:02,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:21:02,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:21:02,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:21:02,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:21:02,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:21:02,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:21:02,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:21:02,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:21:02,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:21:02,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:21:02,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:21:02,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:21:02,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:21:02,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:21:02,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:21:02,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:21:02,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:21:02,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:21:02,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:21:02,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:21:02,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:21:02,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:21:02,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:21:02,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:21:02,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:21:02,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 16:21:02,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:21:02,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:21:02,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:21:02,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:21:02,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:21:02,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:21:02,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:21:02,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:21:02,909 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:21:02,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:21:02,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:21:02,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:21:02,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:21:02,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:21:02,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:21:02,913 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:21:02,913 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:21:02,913 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:21:02,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:21:02,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:21:02,914 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 16:21:02,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 16:21:02,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:21:02,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:21:02,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:21:02,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:21:02,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:21:02,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:02,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:21:02,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:21:02,917 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 16:21:02,918 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 16:21:02,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 16:21:02,919 INFO L138 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_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-11-21 16:21:03,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:21:03,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:21:03,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:21:03,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:21:03,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:21:03,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 16:21:06,484 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:21:06,759 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:21:06,760 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-11-21 16:21:06,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/00bed3f05/35c781e614f547c790657dc354c0c69f/FLAG24a2096f9 [2022-11-21 16:21:06,799 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/data/00bed3f05/35c781e614f547c790657dc354c0c69f [2022-11-21 16:21:06,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:21:06,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:21:06,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:06,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:21:06,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:21:06,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:06" (1/1) ... [2022-11-21 16:21:06,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b969cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:06, skipping insertion in model container [2022-11-21 16:21:06,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:21:06" (1/1) ... [2022-11-21 16:21:06,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:21:06,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:21:07,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 16:21:07,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:07,087 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 16:21:07,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:21:07,114 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 16:21:07,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:07,130 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:21:07,182 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-11-21 16:21:07,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:21:07,237 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:21:07,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07 WrapperNode [2022-11-21 16:21:07,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:21:07,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:07,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:21:07,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:21:07,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,343 INFO L138 Inliner]: procedures = 29, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 336 [2022-11-21 16:21:07,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:21:07,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:21:07,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:21:07,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:21:07,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:21:07,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:21:07,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:21:07,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:21:07,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (1/1) ... [2022-11-21 16:21:07,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:21:07,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:21:07,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:21:07,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:21:07,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:21:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 16:21:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:21:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 16:21:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:21:07,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:21:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:21:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:21:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:21:07,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:21:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 16:21:07,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 16:21:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:21:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:21:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:21:07,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:21:07,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:21:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:21:07,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 16:21:07,536 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:21:07,712 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:21:07,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:21:08,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:21:09,295 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:21:09,295 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-21 16:21:09,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:09 BoogieIcfgContainer [2022-11-21 16:21:09,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:21:09,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:21:09,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:21:09,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:21:09,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:21:06" (1/3) ... [2022-11-21 16:21:09,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c997ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:09, skipping insertion in model container [2022-11-21 16:21:09,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:21:07" (2/3) ... [2022-11-21 16:21:09,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c997ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:21:09, skipping insertion in model container [2022-11-21 16:21:09,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:21:09" (3/3) ... [2022-11-21 16:21:09,312 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-11-21 16:21:09,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:21:09,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-21 16:21:09,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:21:09,490 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:21:09,552 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 16:21:09,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 288 places, 297 transitions, 626 flow [2022-11-21 16:21:09,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 288 places, 297 transitions, 626 flow [2022-11-21 16:21:09,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 297 transitions, 626 flow [2022-11-21 16:21:09,809 INFO L130 PetriNetUnfolder]: 22/293 cut-off events. [2022-11-21 16:21:09,810 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 16:21:09,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 293 events. 22/293 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 269 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 241. Up to 2 conditions per place. [2022-11-21 16:21:09,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 3860 [2022-11-21 16:22:04,160 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 138 DAG size of output: 135 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-21 16:22:06,525 INFO L134 LiptonReduction]: Checked pairs total: 7232 [2022-11-21 16:22:06,525 INFO L136 LiptonReduction]: Total number of compositions: 311 [2022-11-21 16:22:06,533 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 79 transitions, 190 flow [2022-11-21 16:22:07,294 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 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) [2022-11-21 16:22:07,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:22:07,335 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56d284e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:22:07,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-11-21 16:22:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 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) [2022-11-21 16:22:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 16:22:07,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:07,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 16:22:07,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:22:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash 46797, now seen corresponding path program 1 times [2022-11-21 16:22:07,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:22:07,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928362508] [2022-11-21 16:22:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:07,445 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 [2022-11-21 16:22:07,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:22:07,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:22:07,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:22:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:07,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:22:07,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:22:08,010 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-21 16:22:08,011 INFO L350 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 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-21 16:22:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:08,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:22:08,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:22:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928362508] [2022-11-21 16:22:08,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928362508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:08,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:08,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:22:08,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952007795] [2022-11-21 16:22:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:08,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:22:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:22:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:22:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:22:08,139 INFO L87 Difference]: Start difference. First operand has 12344 states, 10950 states have (on average 5.080821917808219) internal successors, (55635), 12343 states have internal predecessors, (55635), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-21 16:22:09,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:09,022 INFO L93 Difference]: Finished difference Result 9644 states and 43391 transitions. [2022-11-21 16:22:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:22:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 16:22:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:09,286 INFO L225 Difference]: With dead ends: 9644 [2022-11-21 16:22:09,299 INFO L226 Difference]: Without dead ends: 9644 [2022-11-21 16:22:09,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:22:09,307 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:09,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 16:22:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9644 states. [2022-11-21 16:22:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9644 to 9644. [2022-11-21 16:22:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9644 states, 8640 states have (on average 5.022106481481481) internal successors, (43391), 9643 states have internal predecessors, (43391), 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) [2022-11-21 16:22:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9644 states to 9644 states and 43391 transitions. [2022-11-21 16:22:10,559 INFO L78 Accepts]: Start accepts. Automaton has 9644 states and 43391 transitions. Word has length 2 [2022-11-21 16:22:10,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:10,576 INFO L495 AbstractCegarLoop]: Abstraction has 9644 states and 43391 transitions. [2022-11-21 16:22:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-21 16:22:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9644 states and 43391 transitions. [2022-11-21 16:22:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 16:22:10,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:10,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 16:22:10,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 16:22:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:22:10,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:22:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash 46798, now seen corresponding path program 1 times [2022-11-21 16:22:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:22:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036395676] [2022-11-21 16:22:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:10,791 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 [2022-11-21 16:22:10,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:22:10,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:22:10,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:22:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:10,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 16:22:10,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:22:11,197 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-21 16:22:11,198 INFO L350 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-21 16:22:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:11,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:22:11,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:22:11,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036395676] [2022-11-21 16:22:11,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036395676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:11,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:11,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 16:22:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757813654] [2022-11-21 16:22:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:11,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:22:11,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:22:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:22:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:22:11,264 INFO L87 Difference]: Start difference. First operand 9644 states and 43391 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-21 16:22:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:12,408 INFO L93 Difference]: Finished difference Result 19284 states and 86778 transitions. [2022-11-21 16:22:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:22:12,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 16:22:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:12,646 INFO L225 Difference]: With dead ends: 19284 [2022-11-21 16:22:12,646 INFO L226 Difference]: Without dead ends: 19284 [2022-11-21 16:22:12,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:22:12,647 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:12,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 12 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 16:22:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19284 states. [2022-11-21 16:22:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19284 to 9647. [2022-11-21 16:22:13,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9647 states, 8643 states have (on average 5.0212889043156315) internal successors, (43399), 9646 states have internal predecessors, (43399), 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) [2022-11-21 16:22:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9647 states to 9647 states and 43399 transitions. [2022-11-21 16:22:14,101 INFO L78 Accepts]: Start accepts. Automaton has 9647 states and 43399 transitions. Word has length 2 [2022-11-21 16:22:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:14,102 INFO L495 AbstractCegarLoop]: Abstraction has 9647 states and 43399 transitions. [2022-11-21 16:22:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-21 16:22:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9647 states and 43399 transitions. [2022-11-21 16:22:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 16:22:14,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:14,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 16:22:14,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-21 16:22:14,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:22:14,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:22:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1455686, now seen corresponding path program 1 times [2022-11-21 16:22:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:22:14,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485440367] [2022-11-21 16:22:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:14,317 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 [2022-11-21 16:22:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:22:14,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:22:14,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:22:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 16:22:14,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:22:14,780 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-21 16:22:14,780 INFO L350 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-21 16:22:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:14,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:22:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:22:15,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:22:15,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485440367] [2022-11-21 16:22:15,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485440367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:22:15,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:22:15,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 16:22:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994369121] [2022-11-21 16:22:15,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:22:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:22:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:22:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:22:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:22:15,171 INFO L87 Difference]: Start difference. First operand 9647 states and 43399 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:22:16,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:22:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:18,747 INFO L93 Difference]: Finished difference Result 28930 states and 130181 transitions. [2022-11-21 16:22:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:22:18,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 16:22:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:19,286 INFO L225 Difference]: With dead ends: 28930 [2022-11-21 16:22:19,287 INFO L226 Difference]: Without dead ends: 28930 [2022-11-21 16:22:19,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:22:19,299 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 239 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:19,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 24 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 16:22:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28930 states. [2022-11-21 16:22:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28930 to 9656. [2022-11-21 16:22:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9656 states, 8652 states have (on average 5.018839574664818) internal successors, (43423), 9655 states have internal predecessors, (43423), 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) [2022-11-21 16:22:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 43423 transitions. [2022-11-21 16:22:20,328 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 43423 transitions. Word has length 3 [2022-11-21 16:22:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 9656 states and 43423 transitions. [2022-11-21 16:22:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:22:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 43423 transitions. [2022-11-21 16:22:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:22:20,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:20,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:22:20,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:22:20,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:22:20,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:22:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash 45189886, now seen corresponding path program 1 times [2022-11-21 16:22:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:22:20,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278707524] [2022-11-21 16:22:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:20,545 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 [2022-11-21 16:22:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:22:20,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:22:20,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:22:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:20,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:22:20,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:22:20,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:22:20,918 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-21 16:22:20,918 INFO L350 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 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-21 16:22:21,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:22:22,053 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-21 16:22:22,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-21 16:22:23,418 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-21 16:22:23,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 182 [2022-11-21 16:29:23,945 WARN L233 SmtUtils]: Spent 6.01m on a formula simplification. DAG size of input: 492 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 16:29:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:23,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:29:23,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:29:23,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278707524] [2022-11-21 16:29:23,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278707524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:29:23,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:29:23,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:29:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992647254] [2022-11-21 16:29:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:29:23,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:29:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:29:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:29:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-21 16:29:23,962 INFO L87 Difference]: Start difference. First operand 9656 states and 43423 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-21 16:29:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:29:24,963 INFO L93 Difference]: Finished difference Result 7891 states and 34598 transitions. [2022-11-21 16:29:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:29:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-21 16:29:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:29:25,012 INFO L225 Difference]: With dead ends: 7891 [2022-11-21 16:29:25,013 INFO L226 Difference]: Without dead ends: 7891 [2022-11-21 16:29:25,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 366.6s TimeCoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-21 16:29:25,014 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:29:25,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:29:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2022-11-21 16:29:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 7891. [2022-11-21 16:29:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 7113 states have (on average 4.864051736257556) internal successors, (34598), 7890 states have internal predecessors, (34598), 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) [2022-11-21 16:29:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 34598 transitions. [2022-11-21 16:29:25,420 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 34598 transitions. Word has length 4 [2022-11-21 16:29:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:29:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 7891 states and 34598 transitions. [2022-11-21 16:29:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-21 16:29:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 34598 transitions. [2022-11-21 16:29:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:29:25,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:29:25,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:29:25,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-21 16:29:25,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:29:25,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:29:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:29:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 45189887, now seen corresponding path program 1 times [2022-11-21 16:29:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:29:25,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511301960] [2022-11-21 16:29:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:29:25,639 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 [2022-11-21 16:29:25,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:29:25,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:29:25,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:29:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:29:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-21 16:29:25,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:29:25,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,098 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-21 16:29:26,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-21 16:29:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,382 INFO L321 Elim1Store]: treesize reduction 186, result has 15.1 percent of original size [2022-11-21 16:29:26,383 INFO L350 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 10 case distinctions, treesize of input 58 treesize of output 73 [2022-11-21 16:29:26,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:29:26,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,701 INFO L321 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2022-11-21 16:29:26,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 36 [2022-11-21 16:29:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:29:26,856 INFO L350 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 12 treesize of output 14 [2022-11-21 16:29:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:26,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:29:26,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:29:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511301960] [2022-11-21 16:29:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511301960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:29:26,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:29:26,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:29:26,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868695122] [2022-11-21 16:29:26,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:29:26,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:29:26,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:29:26,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:29:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:29:26,956 INFO L87 Difference]: Start difference. First operand 7891 states and 34598 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-21 16:29:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:29:28,035 INFO L93 Difference]: Finished difference Result 6126 states and 25773 transitions. [2022-11-21 16:29:28,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:29:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-21 16:29:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:29:28,062 INFO L225 Difference]: With dead ends: 6126 [2022-11-21 16:29:28,062 INFO L226 Difference]: Without dead ends: 6126 [2022-11-21 16:29:28,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:29:28,063 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:29:28,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 6 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 16:29:28,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2022-11-21 16:29:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6126. [2022-11-21 16:29:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6126 states, 5574 states have (on average 4.623789020452099) internal successors, (25773), 6125 states have internal predecessors, (25773), 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) [2022-11-21 16:29:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6126 states to 6126 states and 25773 transitions. [2022-11-21 16:29:28,258 INFO L78 Accepts]: Start accepts. Automaton has 6126 states and 25773 transitions. Word has length 4 [2022-11-21 16:29:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:29:28,258 INFO L495 AbstractCegarLoop]: Abstraction has 6126 states and 25773 transitions. [2022-11-21 16:29:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-21 16:29:28,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6126 states and 25773 transitions. [2022-11-21 16:29:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:29:28,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:29:28,259 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 16:29:28,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:29:28,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:29:28,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:29:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:29:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 421582030, now seen corresponding path program 2 times [2022-11-21 16:29:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:29:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022477763] [2022-11-21 16:29:28,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:29:28,463 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 [2022-11-21 16:29:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:29:28,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:29:28,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:29:28,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:29:28,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:29:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 16:29:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:29:28,897 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-21 16:29:28,898 INFO L350 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 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-21 16:29:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:29,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:29:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:29:30,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:29:30,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022477763] [2022-11-21 16:29:30,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022477763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:29:30,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:29:30,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 16:29:30,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347028625] [2022-11-21 16:29:30,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:29:30,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:29:30,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:29:30,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:29:30,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:29:30,345 INFO L87 Difference]: Start difference. First operand 6126 states and 25773 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-21 16:29:35,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:37,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:38,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:40,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:42,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:44,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:46,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:48,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:50,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:29:53,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:30:01,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:30:01,645 INFO L93 Difference]: Finished difference Result 54996 states and 231712 transitions. [2022-11-21 16:30:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 16:30:01,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 16:30:01,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:30:02,013 INFO L225 Difference]: With dead ends: 54996 [2022-11-21 16:30:02,013 INFO L226 Difference]: Without dead ends: 54996 [2022-11-21 16:30:02,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:30:02,014 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1374 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 163 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:30:02,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 186 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1696 Invalid, 6 Unknown, 0 Unchecked, 28.2s Time] [2022-11-21 16:30:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54996 states. [2022-11-21 16:30:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54996 to 6138. [2022-11-21 16:30:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 5586 states have (on average 4.618152524167562) internal successors, (25797), 6137 states have internal predecessors, (25797), 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) [2022-11-21 16:30:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 25797 transitions. [2022-11-21 16:30:02,712 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 25797 transitions. Word has length 6 [2022-11-21 16:30:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:30:02,712 INFO L495 AbstractCegarLoop]: Abstraction has 6138 states and 25797 transitions. [2022-11-21 16:30:02,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-21 16:30:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 25797 transitions. [2022-11-21 16:30:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:30:02,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:30:02,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:30:02,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:30:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:30:02,914 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:30:02,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 477842623, now seen corresponding path program 1 times [2022-11-21 16:30:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:30:02,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268909403] [2022-11-21 16:30:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:30:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:30:02,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:30:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:30:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:03,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 16:30:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,331 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-21 16:30:03,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2022-11-21 16:30:03,390 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 16:30:03,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2022-11-21 16:30:03,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,486 INFO L350 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 12 treesize of output 14 [2022-11-21 16:30:03,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:03,534 INFO L350 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 12 treesize of output 14 [2022-11-21 16:30:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:30:03,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:30:03,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 16:30:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268909403] [2022-11-21 16:30:03,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268909403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:30:03,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:30:03,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:30:03,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517290262] [2022-11-21 16:30:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:30:03,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:30:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 16:30:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:30:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:03,651 INFO L87 Difference]: Start difference. First operand 6138 states and 25797 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:30:04,206 INFO L93 Difference]: Finished difference Result 5879 states and 24775 transitions. [2022-11-21 16:30:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:30:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 16:30:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:30:04,239 INFO L225 Difference]: With dead ends: 5879 [2022-11-21 16:30:04,239 INFO L226 Difference]: Without dead ends: 5879 [2022-11-21 16:30:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:30:04,240 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:30:04,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 16:30:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2022-11-21 16:30:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5879. [2022-11-21 16:30:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 5377 states have (on average 4.607587874279338) internal successors, (24775), 5878 states have internal predecessors, (24775), 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) [2022-11-21 16:30:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 24775 transitions. [2022-11-21 16:30:04,421 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 24775 transitions. Word has length 6 [2022-11-21 16:30:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:30:04,421 INFO L495 AbstractCegarLoop]: Abstraction has 5879 states and 24775 transitions. [2022-11-21 16:30:04,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:30:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 24775 transitions. [2022-11-21 16:30:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 16:30:04,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:30:04,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 16:30:04,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:30:04,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 16:30:04,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-21 16:30:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:30:04,641 INFO L85 PathProgramCache]: Analyzing trace with hash 477842625, now seen corresponding path program 1 times [2022-11-21 16:30:04,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 16:30:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626890641] [2022-11-21 16:30:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:30:04,641 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 [2022-11-21 16:30:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 16:30:04,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 16:30:04,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb1af1bf-e65b-4660-8ee6-e3228bb20cda/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 16:30:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:30:04,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 16:30:04,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:30:04,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:05,027 INFO L321 Elim1Store]: treesize reduction 161, result has 20.3 percent of original size [2022-11-21 16:30:05,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 49 treesize of output 74 [2022-11-21 16:30:05,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:30:06,057 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-21 16:30:06,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 52 [2022-11-21 16:30:07,538 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-21 16:30:07,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 174