./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- 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-8393723 [2022-11-18 20:38:19,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:19,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:19,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:19,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:19,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:19,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:19,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:19,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:19,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:19,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:19,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:19,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:19,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:19,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:19,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:19,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:19,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:19,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:19,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:19,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:19,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:19,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:19,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:19,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:19,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:19,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:19,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:19,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:19,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:19,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:19,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:19,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:19,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:19,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:19,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:20,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:20,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:20,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:20,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:20,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:20,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:38:20,048 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:20,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:20,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:20,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:20,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:20,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:20,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:20,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:20,052 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:20,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:20,053 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:20,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:38:20,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:20,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:20,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:20,055 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:38:20,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:38:20,055 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:38:20,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:20,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:38:20,056 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:20,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:20,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:20,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:20,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:20,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:20,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:20,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:20,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:38:20,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:38:20,059 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-18 20:38:20,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:20,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:20,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:20,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:20,444 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:20,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-18 20:38:20,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/0d045b286/79def424b0454c288cc91de191354ef9/FLAGc064bd1b1 [2022-11-18 20:38:20,979 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:20,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-18 20:38:20,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/0d045b286/79def424b0454c288cc91de191354ef9/FLAGc064bd1b1 [2022-11-18 20:38:21,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/0d045b286/79def424b0454c288cc91de191354ef9 [2022-11-18 20:38:21,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:21,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:21,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:21,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:21,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:21,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:21" (1/1) ... [2022-11-18 20:38:21,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a6bb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:21, skipping insertion in model container [2022-11-18 20:38:21,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:21" (1/1) ... [2022-11-18 20:38:21,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:21,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:21,695 WARN L234 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-18 20:38:21,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:21,735 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) [2022-11-18 20:38:21,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e78d1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:21, skipping insertion in model container [2022-11-18 20:38:21,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:21,737 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:38:21,740 INFO L158 Benchmark]: Toolchain (without parser) took 346.20ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 52.8MB in the beginning and 82.4MB in the end (delta: -29.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-11-18 20:38:21,741 INFO L158 Benchmark]: CDTParser took 1.36ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:38:21,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.24ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 82.4MB in the end (delta: -29.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-11-18 20:38:21,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36ms. Allocated memory is still 86.0MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.24ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 82.4MB in the end (delta: -29.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 164]: 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro --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 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 --- 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-8393723 [2022-11-18 20:38:23,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:23,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:23,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:23,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:23,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:23,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:23,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:23,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:23,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:23,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:23,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:23,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:23,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:23,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:23,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:23,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:23,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:23,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:23,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:23,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:23,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:23,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:23,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:23,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:23,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:23,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:23,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:23,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:23,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:23,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:23,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:24,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:24,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:24,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:24,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:24,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:24,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:24,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:24,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:24,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:24,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:38:24,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:24,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:24,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:24,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:24,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:24,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:24,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:24,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:24,059 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:24,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:24,060 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:24,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:38:24,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:24,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:24,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:24,062 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:38:24,062 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:38:24,063 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:38:24,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:24,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:38:24,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:38:24,064 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:38:24,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:24,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:24,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:24,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:24,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:24,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:24,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:24,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:24,066 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:38:24,067 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:38:24,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:38:24,067 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 675e4a71573eb5ca191c78078c954ea41743d39a46f0fa586376ee48e7dc4190 [2022-11-18 20:38:24,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:24,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:24,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:24,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:24,495 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:24,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-18 20:38:24,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/1d69c64bf/3fbbb047fc2d4a189a53b8691189b5c4/FLAG9847a928c [2022-11-18 20:38:25,121 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:25,122 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2022-11-18 20:38:25,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/1d69c64bf/3fbbb047fc2d4a189a53b8691189b5c4/FLAG9847a928c [2022-11-18 20:38:25,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/data/1d69c64bf/3fbbb047fc2d4a189a53b8691189b5c4 [2022-11-18 20:38:25,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:25,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:25,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:25,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:25,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:25,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:25,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f773f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25, skipping insertion in model container [2022-11-18 20:38:25,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:25,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:25,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:25,805 WARN L234 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-18 20:38:25,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:25,843 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:38:25,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:25,877 WARN L234 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-18 20:38:25,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:25,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:38:25,933 WARN L234 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_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-11-18 20:38:25,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:25,970 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:38:25,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25 WrapperNode [2022-11-18 20:38:25,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:25,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:25,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:38:25,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:38:25,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,061 INFO L138 Inliner]: procedures = 29, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 340 [2022-11-18 20:38:26,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:26,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:38:26,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:38:26,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:38:26,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:38:26,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:38:26,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:38:26,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:38:26,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (1/1) ... [2022-11-18 20:38:26,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:26,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:38:26,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:38:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:38:26,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:38:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:38:26,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:38:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:38:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:38:26,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:38:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:38:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:38:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:38:26,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:38:26,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:38:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:38:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:38:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:38:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:38:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:38:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:38:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:38:26,264 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:38:26,450 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:38:26,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:38:27,434 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:38:27,820 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:38:27,820 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 20:38:27,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:27 BoogieIcfgContainer [2022-11-18 20:38:27,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:38:27,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:38:27,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:38:27,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:38:27,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:38:25" (1/3) ... [2022-11-18 20:38:27,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eccf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:27, skipping insertion in model container [2022-11-18 20:38:27,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:25" (2/3) ... [2022-11-18 20:38:27,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eccf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:27, skipping insertion in model container [2022-11-18 20:38:27,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:27" (3/3) ... [2022-11-18 20:38:27,838 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-11-18 20:38:27,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:38:27,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-18 20:38:27,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:38:27,996 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:38:28,046 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:38:28,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 299 transitions, 630 flow [2022-11-18 20:38:28,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 299 transitions, 630 flow [2022-11-18 20:38:28,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 299 transitions, 630 flow [2022-11-18 20:38:28,205 INFO L130 PetriNetUnfolder]: 22/295 cut-off events. [2022-11-18 20:38:28,205 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:38:28,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 295 events. 22/295 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 243. Up to 2 conditions per place. [2022-11-18 20:38:28,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 4104 [2022-11-18 20:39:21,394 INFO L134 LiptonReduction]: Checked pairs total: 9014 [2022-11-18 20:39:21,395 INFO L136 LiptonReduction]: Total number of compositions: 309 [2022-11-18 20:39:21,403 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 81 transitions, 194 flow [2022-11-18 20:39:22,256 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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) [2022-11-18 20:39:22,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:39:22,287 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;@7a524531, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:39:22,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-11-18 20:39:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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) [2022-11-18 20:39:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:39:22,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:22,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:39:22,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:39:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 46624, now seen corresponding path program 1 times [2022-11-18 20:39:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:22,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968589362] [2022-11-18 20:39:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:22,361 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 [2022-11-18 20:39:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:22,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:39:22,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:22,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:39:22,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:23,013 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 20:39:23,014 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 [2022-11-18 20:39:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:23,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:23,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968589362] [2022-11-18 20:39:23,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968589362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:23,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:23,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:39:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891760760] [2022-11-18 20:39:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:23,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:39:23,157 INFO L87 Difference]: Start difference. First operand has 15416 states, 14022 states have (on average 4.96954785337327) internal successors, (69683), 15415 states have internal predecessors, (69683), 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) [2022-11-18 20:39:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:25,046 INFO L93 Difference]: Finished difference Result 24746 states and 111712 transitions. [2022-11-18 20:39:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:25,049 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 [2022-11-18 20:39:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:25,606 INFO L225 Difference]: With dead ends: 24746 [2022-11-18 20:39:25,606 INFO L226 Difference]: Without dead ends: 24746 [2022-11-18 20:39:25,607 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 [2022-11-18 20:39:25,611 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:25,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 12 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:39:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24746 states. [2022-11-18 20:39:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24746 to 12378. [2022-11-18 20:39:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12378 states, 11371 states have (on average 4.913288189253364) internal successors, (55869), 12377 states have internal predecessors, (55869), 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) [2022-11-18 20:39:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12378 states to 12378 states and 55869 transitions. [2022-11-18 20:39:27,262 INFO L78 Accepts]: Start accepts. Automaton has 12378 states and 55869 transitions. Word has length 2 [2022-11-18 20:39:27,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:27,263 INFO L495 AbstractCegarLoop]: Abstraction has 12378 states and 55869 transitions. [2022-11-18 20:39:27,263 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) [2022-11-18 20:39:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12378 states and 55869 transitions. [2022-11-18 20:39:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:39:27,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:27,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:39:27,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:27,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:27,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:39:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 46626, now seen corresponding path program 1 times [2022-11-18 20:39:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:27,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853783912] [2022-11-18 20:39:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:27,478 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 [2022-11-18 20:39:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:27,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:39:27,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:27,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:39:27,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:27,791 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-18 20:39:27,791 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 [2022-11-18 20:39:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:27,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:27,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853783912] [2022-11-18 20:39:27,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853783912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:27,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:27,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:39:27,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304467394] [2022-11-18 20:39:27,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:27,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:39:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:39:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:39:27,839 INFO L87 Difference]: Start difference. First operand 12378 states and 55869 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) [2022-11-18 20:39:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:28,588 INFO L93 Difference]: Finished difference Result 12375 states and 55863 transitions. [2022-11-18 20:39:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:28,592 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 [2022-11-18 20:39:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:28,829 INFO L225 Difference]: With dead ends: 12375 [2022-11-18 20:39:28,829 INFO L226 Difference]: Without dead ends: 12375 [2022-11-18 20:39:28,829 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 [2022-11-18 20:39:28,834 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:28,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 6 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:39:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2022-11-18 20:39:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 12375. [2022-11-18 20:39:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12375 states, 11371 states have (on average 4.912760531175798) internal successors, (55863), 12374 states have internal predecessors, (55863), 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) [2022-11-18 20:39:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 55863 transitions. [2022-11-18 20:39:29,836 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 55863 transitions. Word has length 2 [2022-11-18 20:39:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:29,837 INFO L495 AbstractCegarLoop]: Abstraction has 12375 states and 55863 transitions. [2022-11-18 20:39:29,837 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) [2022-11-18 20:39:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 55863 transitions. [2022-11-18 20:39:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:39:29,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:29,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:39:29,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:30,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:30,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:39:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:30,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1453404, now seen corresponding path program 1 times [2022-11-18 20:39:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:30,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792639562] [2022-11-18 20:39:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:30,062 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 [2022-11-18 20:39:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:30,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:39:30,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:39:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:30,635 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-18 20:39:30,635 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 [2022-11-18 20:39:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:30,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:31,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:31,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792639562] [2022-11-18 20:39:31,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792639562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:39:31,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:39:31,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:39:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184908316] [2022-11-18 20:39:31,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:31,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:31,006 INFO L87 Difference]: Start difference. First operand 12375 states and 55863 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) [2022-11-18 20:39:34,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:34,252 INFO L93 Difference]: Finished difference Result 37114 states and 167573 transitions. [2022-11-18 20:39:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:39:34,253 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 [2022-11-18 20:39:34,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:34,612 INFO L225 Difference]: With dead ends: 37114 [2022-11-18 20:39:34,612 INFO L226 Difference]: Without dead ends: 37114 [2022-11-18 20:39:34,612 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 [2022-11-18 20:39:34,617 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 369 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:34,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 24 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-18 20:39:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37114 states. [2022-11-18 20:39:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37114 to 12384. [2022-11-18 20:39:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12384 states, 11380 states have (on average 4.910984182776802) internal successors, (55887), 12383 states have internal predecessors, (55887), 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) [2022-11-18 20:39:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12384 states to 12384 states and 55887 transitions. [2022-11-18 20:39:35,553 INFO L78 Accepts]: Start accepts. Automaton has 12384 states and 55887 transitions. Word has length 3 [2022-11-18 20:39:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:35,554 INFO L495 AbstractCegarLoop]: Abstraction has 12384 states and 55887 transitions. [2022-11-18 20:39:35,554 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) [2022-11-18 20:39:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 12384 states and 55887 transitions. [2022-11-18 20:39:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:39:35,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:35,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:39:35,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:35,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:39:35,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 45126222, now seen corresponding path program 1 times [2022-11-18 20:39:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:35,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951309182] [2022-11-18 20:39:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:35,773 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 [2022-11-18 20:39:35,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:35,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:39:35,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:39:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:35,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:35,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,209 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 20:39:36,209 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 [2022-11-18 20:39:36,402 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-18 20:39:36,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 88 [2022-11-18 20:39:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,511 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 [2022-11-18 20:39:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:36,551 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 [2022-11-18 20:39:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:36,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:39:36,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:39:36,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951309182] [2022-11-18 20:39:36,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951309182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:36,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:36,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:39:36,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265296852] [2022-11-18 20:39:36,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:39:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:39:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:39:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:39:36,592 INFO L87 Difference]: Start difference. First operand 12384 states and 55887 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-18 20:39:37,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:37,075 INFO L93 Difference]: Finished difference Result 10079 states and 44362 transitions. [2022-11-18 20:39:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:39:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2022-11-18 20:39:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:37,149 INFO L225 Difference]: With dead ends: 10079 [2022-11-18 20:39:37,150 INFO L226 Difference]: Without dead ends: 10079 [2022-11-18 20:39:37,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:39:37,151 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:37,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 2 Unchecked, 0.4s Time] [2022-11-18 20:39:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2022-11-18 20:39:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 10079. [2022-11-18 20:39:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10079 states, 9301 states have (on average 4.7695946672400815) internal successors, (44362), 10078 states have internal predecessors, (44362), 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) [2022-11-18 20:39:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10079 states to 10079 states and 44362 transitions. [2022-11-18 20:39:37,614 INFO L78 Accepts]: Start accepts. Automaton has 10079 states and 44362 transitions. Word has length 4 [2022-11-18 20:39:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:37,615 INFO L495 AbstractCegarLoop]: Abstraction has 10079 states and 44362 transitions. [2022-11-18 20:39:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-18 20:39:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 10079 states and 44362 transitions. [2022-11-18 20:39:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-18 20:39:37,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:37,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-18 20:39:37,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:37,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:37,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:39:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash 45126224, now seen corresponding path program 1 times [2022-11-18 20:39:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:39:37,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996933300] [2022-11-18 20:39:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:37,830 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 [2022-11-18 20:39:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:39:37,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:39:37,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:39:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:37,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:39:37,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:38,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:38,181 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:39:38,182 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 [2022-11-18 20:39:39,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:39:39,158 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:39:39,159 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 [2022-11-18 20:39:40,520 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:39:40,521 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 [2022-11-18 20:49:39,160 WARN L233 SmtUtils]: Spent 8.97m on a formula simplification. DAG size of input: 530 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:49:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:39,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:39,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:49:39,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996933300] [2022-11-18 20:49:39,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996933300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:39,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:39,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53395185] [2022-11-18 20:49:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:39,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:49:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:49:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:49:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-18 20:49:39,168 INFO L87 Difference]: Start difference. First operand 10079 states and 44362 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) [2022-11-18 20:49:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:39,630 INFO L93 Difference]: Finished difference Result 10081 states and 44366 transitions. [2022-11-18 20:49:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:49:39,631 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 [2022-11-18 20:49:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:39,677 INFO L225 Difference]: With dead ends: 10081 [2022-11-18 20:49:39,677 INFO L226 Difference]: Without dead ends: 10081 [2022-11-18 20:49:39,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 544.1s TimeCoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=0, Total=20 [2022-11-18 20:49:39,678 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:39,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 118 Unchecked, 0.4s Time] [2022-11-18 20:49:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10081 states. [2022-11-18 20:49:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10081 to 10081. [2022-11-18 20:49:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 9303 states have (on average 4.768999247554552) internal successors, (44366), 10080 states have internal predecessors, (44366), 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) [2022-11-18 20:49:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 44366 transitions. [2022-11-18 20:49:40,058 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 44366 transitions. Word has length 4 [2022-11-18 20:49:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:40,059 INFO L495 AbstractCegarLoop]: Abstraction has 10081 states and 44366 transitions. [2022-11-18 20:49:40,059 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) [2022-11-18 20:49:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 44366 transitions. [2022-11-18 20:49:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:49:40,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:40,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:49:40,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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)] Ended with exit code 0 [2022-11-18 20:49:40,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:49:40,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:49:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1398880197, now seen corresponding path program 1 times [2022-11-18 20:49:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:49:40,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814791477] [2022-11-18 20:49:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:40,261 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 [2022-11-18 20:49:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:49:40,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:49:40,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:49:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:40,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:49:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:40,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:40,690 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:49:40,690 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 [2022-11-18 20:49:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:41,253 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 20:49:41,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-18 20:49:43,831 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-18 20:49:43,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2022-11-18 20:49:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:49:44,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:44,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:49:44,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814791477] [2022-11-18 20:49:44,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814791477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:44,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:44,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:49:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989169693] [2022-11-18 20:49:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:44,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:49:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:49:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:49:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2022-11-18 20:49:44,457 INFO L87 Difference]: Start difference. First operand 10081 states and 44366 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 20:49:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:44,884 INFO L93 Difference]: Finished difference Result 10086 states and 44377 transitions. [2022-11-18 20:49:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:49:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-18 20:49:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:44,927 INFO L225 Difference]: With dead ends: 10086 [2022-11-18 20:49:44,927 INFO L226 Difference]: Without dead ends: 10086 [2022-11-18 20:49:44,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2022-11-18 20:49:44,929 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:44,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 116 Unchecked, 0.4s Time] [2022-11-18 20:49:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2022-11-18 20:49:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 10085. [2022-11-18 20:49:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10085 states, 9307 states have (on average 4.767916621897497) internal successors, (44375), 10084 states have internal predecessors, (44375), 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) [2022-11-18 20:49:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10085 states to 10085 states and 44375 transitions. [2022-11-18 20:49:45,256 INFO L78 Accepts]: Start accepts. Automaton has 10085 states and 44375 transitions. Word has length 5 [2022-11-18 20:49:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:45,257 INFO L495 AbstractCegarLoop]: Abstraction has 10085 states and 44375 transitions. [2022-11-18 20:49:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-18 20:49:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10085 states and 44375 transitions. [2022-11-18 20:49:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:49:45,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:45,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:49:45,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:49:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:49:45,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2022-11-18 20:49:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1398913088, now seen corresponding path program 1 times [2022-11-18 20:49:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:49:45,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461331817] [2022-11-18 20:49:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:45,464 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 [2022-11-18 20:49:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:49:45,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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) [2022-11-18 20:49:45,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb5e35e-6a78-4de5-9cd5-9f97c5b5c3c7/bin/uautomizer-TMbwUNV5ro/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 [2022-11-18 20:49:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:45,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:49:45,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:45,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:45,893 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-18 20:49:45,894 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 [2022-11-18 20:49:46,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:49:47,085 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-18 20:49:47,086 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 [2022-11-18 20:49:48,879 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-18 20:49:48,879 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 93 treesize of output 186