./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8 --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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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-e04fb08 [2022-11-16 11:33:48,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:48,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:48,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:48,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:48,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:48,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:48,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:48,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:48,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:48,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:48,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:48,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:48,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:48,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:48,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:48,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:48,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:48,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:48,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:48,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:48,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:48,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:48,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:48,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:48,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:48,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:48,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:48,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:48,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:48,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:48,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:48,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:48,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:48,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:48,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:48,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:48,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:48,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:48,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:48,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:48,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:33:48,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:48,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:48,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:48,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:48,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:48,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:48,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:48,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:48,505 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:48,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:48,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:33:48,507 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:33:48,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:48,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:33:48,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:48,508 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:33:48,508 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:33:48,508 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:33:48,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:48,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:33:48,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:33:48,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:48,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:48,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:48,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:48,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:48,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:48,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:48,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:33:48,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:33:48,513 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_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-16 11:33:48,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:48,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:48,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:48,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:48,864 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:48,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-16 11:33:48,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/3d8fc7696/5a968ca893fb42768b07ee5b07c5867b/FLAG06e8d71b4 [2022-11-16 11:33:49,345 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:49,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-16 11:33:49,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/3d8fc7696/5a968ca893fb42768b07ee5b07c5867b/FLAG06e8d71b4 [2022-11-16 11:33:49,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/3d8fc7696/5a968ca893fb42768b07ee5b07c5867b [2022-11-16 11:33:49,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:49,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:49,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:49,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:49,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:49,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:49" (1/1) ... [2022-11-16 11:33:49,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f92cfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:49, skipping insertion in model container [2022-11-16 11:33:49,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:49" (1/1) ... [2022-11-16 11:33:49,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:49,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:50,006 WARN L229 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_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-16 11:33:50,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:50,026 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) [2022-11-16 11:33:50,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6408408d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:50, skipping insertion in model container [2022-11-16 11:33:50,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:50,027 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:33:50,029 INFO L158 Benchmark]: Toolchain (without parser) took 272.07ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 102.1MB in the end (delta: -11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:33:50,029 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:33:50,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.35ms. Allocated memory is still 127.9MB. Free memory was 90.1MB in the beginning and 102.1MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:33:50,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 127.9MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.35ms. Allocated memory is still 127.9MB. Free memory was 90.1MB in the beginning and 102.1MB in the end (delta: -12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 143]: 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_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8 --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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- 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-e04fb08 [2022-11-16 11:33:52,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:52,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:52,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:52,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:52,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:52,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:52,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:52,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:52,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:52,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:52,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:52,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:52,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:52,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:52,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:52,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:52,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:52,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:52,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:52,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:52,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:52,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:52,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:52,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:52,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:52,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:52,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:52,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:52,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:52,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:52,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:52,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:52,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:52,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:52,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:52,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:52,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:52,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:52,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:52,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:52,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:33:52,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:52,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:52,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:52,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:52,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:52,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:52,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:52,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:52,426 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:52,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:52,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:33:52,426 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:33:52,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:33:52,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:52,428 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:33:52,428 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:33:52,428 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:33:52,428 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:33:52,428 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:52,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:52,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:52,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:52,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:52,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:52,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:52,430 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:33:52,430 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:33:52,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:33:52,430 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_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2022-11-16 11:33:52,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:52,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:52,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:52,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:52,845 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:52,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-16 11:33:52,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/e5cc85e4c/508196ad81b54908aaf095cb0a57bd3e/FLAGdf6f267d7 [2022-11-16 11:33:53,514 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:53,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2022-11-16 11:33:53,532 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/e5cc85e4c/508196ad81b54908aaf095cb0a57bd3e/FLAGdf6f267d7 [2022-11-16 11:33:53,845 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/data/e5cc85e4c/508196ad81b54908aaf095cb0a57bd3e [2022-11-16 11:33:53,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:53,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:53,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:53,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:53,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:53,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:53" (1/1) ... [2022-11-16 11:33:53,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f9ec45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:53, skipping insertion in model container [2022-11-16 11:33:53,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:53" (1/1) ... [2022-11-16 11:33:53,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:53,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:54,100 WARN L229 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_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-16 11:33:54,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:54,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:33:54,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:54,195 WARN L229 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_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-16 11:33:54,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:54,205 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:33:54,237 WARN L229 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_477bad26-4eee-464b-81ac-f1da3b1305d6/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-11-16 11:33:54,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:54,258 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:33:54,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54 WrapperNode [2022-11-16 11:33:54,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:54,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:54,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:33:54,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:33:54,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,324 INFO L138 Inliner]: procedures = 29, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 172 [2022-11-16 11:33:54,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:54,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:33:54,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:33:54,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:33:54,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:33:54,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:33:54,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:33:54,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:33:54,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (1/1) ... [2022-11-16 11:33:54,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:54,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:33:54,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:33:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:33:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:33:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:33:54,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:33:54,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:33:54,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:33:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:33:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:33:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:33:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:33:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-16 11:33:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-16 11:33:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-16 11:33:54,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-16 11:33:54,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:33:54,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:33:54,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:33:54,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:33:54,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:33:54,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:33:54,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:33:54,483 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:33:54,713 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:33:54,716 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:33:55,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:33:55,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:33:55,796 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 11:33:55,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:55 BoogieIcfgContainer [2022-11-16 11:33:55,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:33:55,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:33:55,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:33:55,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:33:55,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:33:53" (1/3) ... [2022-11-16 11:33:55,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78617adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:55, skipping insertion in model container [2022-11-16 11:33:55,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:54" (2/3) ... [2022-11-16 11:33:55,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78617adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:55, skipping insertion in model container [2022-11-16 11:33:55,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:55" (3/3) ... [2022-11-16 11:33:55,821 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-11-16 11:33:55,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:33:55,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-11-16 11:33:55,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:33:56,042 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 11:33:56,095 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:33:56,115 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 243 transitions, 526 flow [2022-11-16 11:33:56,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 243 transitions, 526 flow [2022-11-16 11:33:56,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 243 transitions, 526 flow [2022-11-16 11:33:56,290 INFO L130 PetriNetUnfolder]: 14/238 cut-off events. [2022-11-16 11:33:56,290 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:33:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 238 events. 14/238 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 335 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 188. Up to 2 conditions per place. [2022-11-16 11:33:56,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 8466 [2022-11-16 11:34:40,928 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 119 DAG size of output: 117 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 11:34:50,848 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 135 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 11:35:01,112 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 144 DAG size of output: 143 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-16 11:35:03,889 INFO L134 LiptonReduction]: Checked pairs total: 14491 [2022-11-16 11:35:03,890 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-11-16 11:35:03,899 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 102 places, 91 transitions, 222 flow [2022-11-16 11:35:09,012 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 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) [2022-11-16 11:35:09,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:35:09,072 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;@b923be5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:35:09,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-11-16 11:35:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 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) [2022-11-16 11:35:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:35:09,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:09,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:35:09,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash 32689, now seen corresponding path program 1 times [2022-11-16 11:35:09,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:09,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718364526] [2022-11-16 11:35:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:09,302 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 [2022-11-16 11:35:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:09,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:09,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:09,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:35:09,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:09,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:09,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718364526] [2022-11-16 11:35:09,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718364526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:09,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:09,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552332418] [2022-11-16 11:35:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:09,966 INFO L87 Difference]: Start difference. First operand has 108458 states, 94850 states have (on average 5.793473906167633) internal successors, (549511), 108457 states have internal predecessors, (549511), 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) [2022-11-16 11:35:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:11,448 INFO L93 Difference]: Finished difference Result 22628 states and 113177 transitions. [2022-11-16 11:35:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:11,452 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 [2022-11-16 11:35:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:11,728 INFO L225 Difference]: With dead ends: 22628 [2022-11-16 11:35:11,729 INFO L226 Difference]: Without dead ends: 22628 [2022-11-16 11:35:11,730 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 [2022-11-16 11:35:11,736 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:35:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22628 states. [2022-11-16 11:35:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22628 to 22626. [2022-11-16 11:35:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22626 states, 21171 states have (on average 5.3458504558121955) internal successors, (113177), 22625 states have internal predecessors, (113177), 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) [2022-11-16 11:35:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22626 states to 22626 states and 113177 transitions. [2022-11-16 11:35:13,368 INFO L78 Accepts]: Start accepts. Automaton has 22626 states and 113177 transitions. Word has length 2 [2022-11-16 11:35:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:13,368 INFO L495 AbstractCegarLoop]: Abstraction has 22626 states and 113177 transitions. [2022-11-16 11:35:13,369 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) [2022-11-16 11:35:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22626 states and 113177 transitions. [2022-11-16 11:35:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:35:13,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:13,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:35:13,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:13,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:13,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:13,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash 32575, now seen corresponding path program 1 times [2022-11-16 11:35:13,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:13,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72716002] [2022-11-16 11:35:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:13,586 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 [2022-11-16 11:35:13,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:13,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:13,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:13,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:35:13,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:14,371 INFO L321 Elim1Store]: treesize reduction 240, result has 26.4 percent of original size [2022-11-16 11:35:14,372 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 5 case distinctions, treesize of input 21 treesize of output 93 [2022-11-16 11:35:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:14,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:14,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:14,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72716002] [2022-11-16 11:35:14,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72716002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:14,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:14,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113018486] [2022-11-16 11:35:14,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:14,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:14,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:14,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:14,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:14,440 INFO L87 Difference]: Start difference. First operand 22626 states and 113177 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) [2022-11-16 11:35:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:15,226 INFO L93 Difference]: Finished difference Result 22625 states and 113175 transitions. [2022-11-16 11:35:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:15,227 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 [2022-11-16 11:35:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:15,463 INFO L225 Difference]: With dead ends: 22625 [2022-11-16 11:35:15,463 INFO L226 Difference]: Without dead ends: 22625 [2022-11-16 11:35:15,464 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 [2022-11-16 11:35:15,468 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:15,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 4 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:35:15,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22625 states. [2022-11-16 11:35:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22625 to 22625. [2022-11-16 11:35:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22625 states, 21171 states have (on average 5.345755986963299) internal successors, (113175), 22624 states have internal predecessors, (113175), 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) [2022-11-16 11:35:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22625 states to 22625 states and 113175 transitions. [2022-11-16 11:35:16,967 INFO L78 Accepts]: Start accepts. Automaton has 22625 states and 113175 transitions. Word has length 2 [2022-11-16 11:35:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:16,968 INFO L495 AbstractCegarLoop]: Abstraction has 22625 states and 113175 transitions. [2022-11-16 11:35:16,968 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) [2022-11-16 11:35:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 22625 states and 113175 transitions. [2022-11-16 11:35:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:35:16,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:16,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:35:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:17,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash 32576, now seen corresponding path program 1 times [2022-11-16 11:35:17,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:17,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213479395] [2022-11-16 11:35:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:17,184 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 [2022-11-16 11:35:17,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:17,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:17,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:17,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:35:17,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:17,717 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-16 11:35:17,717 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-16 11:35:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:17,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:17,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:17,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213479395] [2022-11-16 11:35:17,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213479395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:17,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:17,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136528319] [2022-11-16 11:35:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:17,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:17,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:17,789 INFO L87 Difference]: Start difference. First operand 22625 states and 113175 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) [2022-11-16 11:35:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:18,319 INFO L93 Difference]: Finished difference Result 22625 states and 113174 transitions. [2022-11-16 11:35:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:18,320 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 [2022-11-16 11:35:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:19,045 INFO L225 Difference]: With dead ends: 22625 [2022-11-16 11:35:19,054 INFO L226 Difference]: Without dead ends: 22625 [2022-11-16 11:35:19,054 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 [2022-11-16 11:35:19,059 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:19,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-16 11:35:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22625 states. [2022-11-16 11:35:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22625 to 22625. [2022-11-16 11:35:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22625 states, 21171 states have (on average 5.34570875253885) internal successors, (113174), 22624 states have internal predecessors, (113174), 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) [2022-11-16 11:35:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22625 states to 22625 states and 113174 transitions. [2022-11-16 11:35:20,433 INFO L78 Accepts]: Start accepts. Automaton has 22625 states and 113174 transitions. Word has length 2 [2022-11-16 11:35:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:20,434 INFO L495 AbstractCegarLoop]: Abstraction has 22625 states and 113174 transitions. [2022-11-16 11:35:20,434 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) [2022-11-16 11:35:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 22625 states and 113174 transitions. [2022-11-16 11:35:20,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:35:20,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:20,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:35:20,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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)] Ended with exit code 0 [2022-11-16 11:35:20,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:20,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1013839, now seen corresponding path program 1 times [2022-11-16 11:35:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127996848] [2022-11-16 11:35:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:20,649 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 [2022-11-16 11:35:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:20,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:20,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:20,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:35:20,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:20,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:20,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:20,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:20,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:20,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:21,195 INFO L321 Elim1Store]: treesize reduction 115, result has 32.4 percent of original size [2022-11-16 11:35:21,196 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 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:35:21,250 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:35:21,250 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 40 treesize of output 34 [2022-11-16 11:35:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:21,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:21,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:21,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127996848] [2022-11-16 11:35:21,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127996848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:21,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:21,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612461058] [2022-11-16 11:35:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:21,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:21,410 INFO L87 Difference]: Start difference. First operand 22625 states and 113174 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-16 11:35:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:21,922 INFO L93 Difference]: Finished difference Result 22624 states and 113173 transitions. [2022-11-16 11:35:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:21,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 [2022-11-16 11:35:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:22,106 INFO L225 Difference]: With dead ends: 22624 [2022-11-16 11:35:22,106 INFO L226 Difference]: Without dead ends: 22624 [2022-11-16 11:35:22,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:22,109 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:22,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 65 Unchecked, 0.3s Time] [2022-11-16 11:35:22,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22624 states. [2022-11-16 11:35:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22624 to 22624. [2022-11-16 11:35:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22624 states, 21171 states have (on average 5.345661518114402) internal successors, (113173), 22623 states have internal predecessors, (113173), 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) [2022-11-16 11:35:23,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22624 states to 22624 states and 113173 transitions. [2022-11-16 11:35:23,365 INFO L78 Accepts]: Start accepts. Automaton has 22624 states and 113173 transitions. Word has length 3 [2022-11-16 11:35:23,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:23,365 INFO L495 AbstractCegarLoop]: Abstraction has 22624 states and 113173 transitions. [2022-11-16 11:35:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-16 11:35:23,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22624 states and 113173 transitions. [2022-11-16 11:35:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:35:23,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:23,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:35:23,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:23,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1013841, now seen corresponding path program 1 times [2022-11-16 11:35:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010732116] [2022-11-16 11:35:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:23,580 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 [2022-11-16 11:35:23,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:23,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:23,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:23,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:35:23,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:23,932 INFO L321 Elim1Store]: treesize reduction 320, result has 10.1 percent of original size [2022-11-16 11:35:23,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 61 treesize of output 76 [2022-11-16 11:35:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:24,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:24,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:24,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010732116] [2022-11-16 11:35:24,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010732116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:24,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:24,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826906619] [2022-11-16 11:35:24,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:24,117 INFO L87 Difference]: Start difference. First operand 22624 states and 113173 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-16 11:35:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:24,611 INFO L93 Difference]: Finished difference Result 22623 states and 113172 transitions. [2022-11-16 11:35:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:24,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 [2022-11-16 11:35:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:24,806 INFO L225 Difference]: With dead ends: 22623 [2022-11-16 11:35:24,806 INFO L226 Difference]: Without dead ends: 22623 [2022-11-16 11:35:24,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:24,807 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:24,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 64 Unchecked, 0.3s Time] [2022-11-16 11:35:25,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22623 states. [2022-11-16 11:35:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22623 to 22623. [2022-11-16 11:35:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22623 states, 21171 states have (on average 5.345614283689954) internal successors, (113172), 22622 states have internal predecessors, (113172), 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) [2022-11-16 11:35:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22623 states to 22623 states and 113172 transitions. [2022-11-16 11:35:26,097 INFO L78 Accepts]: Start accepts. Automaton has 22623 states and 113172 transitions. Word has length 3 [2022-11-16 11:35:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:26,097 INFO L495 AbstractCegarLoop]: Abstraction has 22623 states and 113172 transitions. [2022-11-16 11:35:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-16 11:35:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 22623 states and 113172 transitions. [2022-11-16 11:35:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:35:26,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:26,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:35:26,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:26,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:26,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1013726, now seen corresponding path program 1 times [2022-11-16 11:35:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068816740] [2022-11-16 11:35:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:26,300 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 [2022-11-16 11:35:26,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:26,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:26,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:26,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:35:26,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:26,760 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-16 11:35:26,760 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-16 11:35:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:26,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:27,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:27,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068816740] [2022-11-16 11:35:27,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068816740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:27,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:27,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:35:27,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156992256] [2022-11-16 11:35:27,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:35:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:27,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:35:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:35:27,086 INFO L87 Difference]: Start difference. First operand 22623 states and 113172 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) [2022-11-16 11:35:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:29,006 INFO L93 Difference]: Finished difference Result 45245 states and 226345 transitions. [2022-11-16 11:35:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:35:29,007 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 [2022-11-16 11:35:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:29,271 INFO L225 Difference]: With dead ends: 45245 [2022-11-16 11:35:29,271 INFO L226 Difference]: Without dead ends: 45245 [2022-11-16 11:35:29,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:35:29,272 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 265 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:29,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 12 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:35:29,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45245 states. [2022-11-16 11:35:30,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45245 to 22626. [2022-11-16 11:35:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22626 states, 21174 states have (on average 5.345140266364409) internal successors, (113178), 22625 states have internal predecessors, (113178), 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) [2022-11-16 11:35:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22626 states to 22626 states and 113178 transitions. [2022-11-16 11:35:30,615 INFO L78 Accepts]: Start accepts. Automaton has 22626 states and 113178 transitions. Word has length 3 [2022-11-16 11:35:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:30,615 INFO L495 AbstractCegarLoop]: Abstraction has 22626 states and 113178 transitions. [2022-11-16 11:35:30,615 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) [2022-11-16 11:35:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 22626 states and 113178 transitions. [2022-11-16 11:35:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:35:30,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:30,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:35:30,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:30,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:30,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:30,820 INFO L85 PathProgramCache]: Analyzing trace with hash 974324072, now seen corresponding path program 1 times [2022-11-16 11:35:30,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:30,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007233794] [2022-11-16 11:35:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:30,821 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 [2022-11-16 11:35:30,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:30,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:30,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:30,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:35:30,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:31,190 INFO L321 Elim1Store]: treesize reduction 240, result has 26.4 percent of original size [2022-11-16 11:35:31,191 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 5 case distinctions, treesize of input 21 treesize of output 93 [2022-11-16 11:35:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:31,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:31,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:31,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007233794] [2022-11-16 11:35:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007233794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:31,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:35:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877503689] [2022-11-16 11:35:31,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:35:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:31,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:35:31,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:35:31,253 INFO L87 Difference]: Start difference. First operand 22626 states and 113178 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) [2022-11-16 11:35:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:31,625 INFO L93 Difference]: Finished difference Result 8602 states and 42506 transitions. [2022-11-16 11:35:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:35:31,626 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 [2022-11-16 11:35:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:31,668 INFO L225 Difference]: With dead ends: 8602 [2022-11-16 11:35:31,668 INFO L226 Difference]: Without dead ends: 8602 [2022-11-16 11:35:31,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:35:31,669 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:31,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:35:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8602 states. [2022-11-16 11:35:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8602 to 8602. [2022-11-16 11:35:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 8323 states have (on average 5.107052745404301) internal successors, (42506), 8601 states have internal predecessors, (42506), 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) [2022-11-16 11:35:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 42506 transitions. [2022-11-16 11:35:32,441 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 42506 transitions. Word has length 5 [2022-11-16 11:35:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:32,441 INFO L495 AbstractCegarLoop]: Abstraction has 8602 states and 42506 transitions. [2022-11-16 11:35:32,442 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) [2022-11-16 11:35:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 42506 transitions. [2022-11-16 11:35:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:35:32,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:32,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:35:32,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:32,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:32,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:32,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 974324073, now seen corresponding path program 1 times [2022-11-16 11:35:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:32,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741405335] [2022-11-16 11:35:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:32,644 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 [2022-11-16 11:35:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:32,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:32,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:35:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:32,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:35:32,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:32,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:32,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-11-16 11:35:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:33,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:33,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741405335] [2022-11-16 11:35:33,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741405335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:33,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:35:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834068501] [2022-11-16 11:35:33,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:35:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:35:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:35:33,036 INFO L87 Difference]: Start difference. First operand 8602 states and 42506 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 11:35:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:34,157 INFO L93 Difference]: Finished difference Result 12269 states and 60337 transitions. [2022-11-16 11:35:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:35:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 [2022-11-16 11:35:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:34,225 INFO L225 Difference]: With dead ends: 12269 [2022-11-16 11:35:34,225 INFO L226 Difference]: Without dead ends: 12269 [2022-11-16 11:35:34,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:35:34,226 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 407 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:34,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 6 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:35:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12269 states. [2022-11-16 11:35:34,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12269 to 6138. [2022-11-16 11:35:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6138 states, 5999 states have (on average 5.029838306384398) internal successors, (30174), 6137 states have internal predecessors, (30174), 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) [2022-11-16 11:35:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6138 states to 6138 states and 30174 transitions. [2022-11-16 11:35:34,531 INFO L78 Accepts]: Start accepts. Automaton has 6138 states and 30174 transitions. Word has length 5 [2022-11-16 11:35:34,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:34,531 INFO L495 AbstractCegarLoop]: Abstraction has 6138 states and 30174 transitions. [2022-11-16 11:35:34,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-16 11:35:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6138 states and 30174 transitions. [2022-11-16 11:35:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:35:34,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:34,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:35:34,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:34,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:34,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash 974324353, now seen corresponding path program 1 times [2022-11-16 11:35:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574352861] [2022-11-16 11:35:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:34,737 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 [2022-11-16 11:35:34,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:34,738 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:34,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:35:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:34,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:35:34,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:35,146 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-16 11:35:35,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-16 11:35:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:35,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:35,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574352861] [2022-11-16 11:35:35,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574352861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:35,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:35,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:35,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877833649] [2022-11-16 11:35:35,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:35,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:35,418 INFO L87 Difference]: Start difference. First operand 6138 states and 30174 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 11:35:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:35,708 INFO L93 Difference]: Finished difference Result 6137 states and 30172 transitions. [2022-11-16 11:35:35,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:35,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-16 11:35:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:35,758 INFO L225 Difference]: With dead ends: 6137 [2022-11-16 11:35:35,758 INFO L226 Difference]: Without dead ends: 6137 [2022-11-16 11:35:35,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:35,759 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:35,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6137 states. [2022-11-16 11:35:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 6137. [2022-11-16 11:35:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 5998 states have (on average 5.030343447815938) internal successors, (30172), 6136 states have internal predecessors, (30172), 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) [2022-11-16 11:35:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 30172 transitions. [2022-11-16 11:35:36,033 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 30172 transitions. Word has length 5 [2022-11-16 11:35:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:36,033 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 30172 transitions. [2022-11-16 11:35:36,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 11:35:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 30172 transitions. [2022-11-16 11:35:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:35:36,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:36,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:35:36,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:36,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 974324354, now seen corresponding path program 1 times [2022-11-16 11:35:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:36,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734842767] [2022-11-16 11:35:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:36,235 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 [2022-11-16 11:35:36,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:36,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:36,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:35:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:36,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:35:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:36,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:36,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:37,043 INFO L321 Elim1Store]: treesize reduction 86, result has 37.7 percent of original size [2022-11-16 11:35:37,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2022-11-16 11:35:37,129 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-16 11:35:37,129 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 161 treesize of output 160 [2022-11-16 11:35:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:37,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:37,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734842767] [2022-11-16 11:35:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734842767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:37,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522487460] [2022-11-16 11:35:37,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:37,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:37,385 INFO L87 Difference]: Start difference. First operand 6137 states and 30172 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 11:35:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:37,633 INFO L93 Difference]: Finished difference Result 6136 states and 30170 transitions. [2022-11-16 11:35:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:37,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-16 11:35:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:37,658 INFO L225 Difference]: With dead ends: 6136 [2022-11-16 11:35:37,658 INFO L226 Difference]: Without dead ends: 6136 [2022-11-16 11:35:37,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:37,659 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:37,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2022-11-16 11:35:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 6136. [2022-11-16 11:35:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 5997 states have (on average 5.03084875771219) internal successors, (30170), 6135 states have internal predecessors, (30170), 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) [2022-11-16 11:35:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 30170 transitions. [2022-11-16 11:35:37,800 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 30170 transitions. Word has length 5 [2022-11-16 11:35:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:37,800 INFO L495 AbstractCegarLoop]: Abstraction has 6136 states and 30170 transitions. [2022-11-16 11:35:37,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 11:35:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 30170 transitions. [2022-11-16 11:35:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:35:37,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:37,801 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-16 11:35:37,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:38,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:38,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:38,013 INFO L85 PathProgramCache]: Analyzing trace with hash 138983104, now seen corresponding path program 2 times [2022-11-16 11:35:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:38,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908306653] [2022-11-16 11:35:38,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:38,014 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 [2022-11-16 11:35:38,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:38,015 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:38,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:35:38,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:35:38,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:35:38,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:38,522 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-16 11:35:38,522 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-16 11:35:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:38,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:35:39,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:39,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908306653] [2022-11-16 11:35:39,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908306653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:39,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:39,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-16 11:35:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13656662] [2022-11-16 11:35:39,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:39,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:35:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:35:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:35:39,617 INFO L87 Difference]: Start difference. First operand 6136 states and 30170 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:48,269 INFO L93 Difference]: Finished difference Result 55174 states and 271454 transitions. [2022-11-16 11:35:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:35:48,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:35:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:48,589 INFO L225 Difference]: With dead ends: 55174 [2022-11-16 11:35:48,589 INFO L226 Difference]: Without dead ends: 55174 [2022-11-16 11:35:48,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:35:48,590 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1682 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:48,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 48 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 11:35:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55174 states. [2022-11-16 11:35:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55174 to 6142. [2022-11-16 11:35:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 6003 states have (on average 5.027819423621523) internal successors, (30182), 6141 states have internal predecessors, (30182), 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) [2022-11-16 11:35:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 30182 transitions. [2022-11-16 11:35:49,182 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 30182 transitions. Word has length 6 [2022-11-16 11:35:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:49,183 INFO L495 AbstractCegarLoop]: Abstraction has 6142 states and 30182 transitions. [2022-11-16 11:35:49,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 30182 transitions. [2022-11-16 11:35:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:35:49,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:49,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:35:49,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:49,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:49,384 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:49,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash 139276178, now seen corresponding path program 1 times [2022-11-16 11:35:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:49,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128265366] [2022-11-16 11:35:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:49,385 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 [2022-11-16 11:35:49,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:49,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 11:35:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:49,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:35:49,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:49,949 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-16 11:35:49,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-16 11:35:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:50,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:50,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:50,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128265366] [2022-11-16 11:35:50,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128265366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:50,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:50,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877466060] [2022-11-16 11:35:50,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:50,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:50,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:50,252 INFO L87 Difference]: Start difference. First operand 6142 states and 30182 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:35:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:50,494 INFO L93 Difference]: Finished difference Result 6141 states and 30180 transitions. [2022-11-16 11:35:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:50,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:35:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:50,519 INFO L225 Difference]: With dead ends: 6141 [2022-11-16 11:35:50,519 INFO L226 Difference]: Without dead ends: 6141 [2022-11-16 11:35:50,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:50,520 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:50,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2022-11-16 11:35:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 6141. [2022-11-16 11:35:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6141 states, 6002 states have (on average 5.028323892035988) internal successors, (30180), 6140 states have internal predecessors, (30180), 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) [2022-11-16 11:35:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 30180 transitions. [2022-11-16 11:35:50,661 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 30180 transitions. Word has length 6 [2022-11-16 11:35:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:50,661 INFO L495 AbstractCegarLoop]: Abstraction has 6141 states and 30180 transitions. [2022-11-16 11:35:50,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:35:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 30180 transitions. [2022-11-16 11:35:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:35:50,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:50,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:35:50,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:50,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:50,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:50,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash 139276179, now seen corresponding path program 1 times [2022-11-16 11:35:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:50,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713154134] [2022-11-16 11:35:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:50,864 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 [2022-11-16 11:35:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:50,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:50,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 11:35:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:51,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:35:51,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:51,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:51,423 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-16 11:35:51,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-16 11:35:51,477 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:35:51,477 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 52 treesize of output 46 [2022-11-16 11:35:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:51,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:51,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:51,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713154134] [2022-11-16 11:35:51,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713154134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:51,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:51,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395447117] [2022-11-16 11:35:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:51,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:51,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:51,664 INFO L87 Difference]: Start difference. First operand 6141 states and 30180 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:35:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:51,918 INFO L93 Difference]: Finished difference Result 6140 states and 30178 transitions. [2022-11-16 11:35:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:51,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 11:35:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:51,943 INFO L225 Difference]: With dead ends: 6140 [2022-11-16 11:35:51,943 INFO L226 Difference]: Without dead ends: 6140 [2022-11-16 11:35:51,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:51,943 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:51,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2022-11-16 11:35:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 6140. [2022-11-16 11:35:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6140 states, 6001 states have (on average 5.02882852857857) internal successors, (30178), 6139 states have internal predecessors, (30178), 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) [2022-11-16 11:35:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 30178 transitions. [2022-11-16 11:35:52,081 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 30178 transitions. Word has length 6 [2022-11-16 11:35:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:52,081 INFO L495 AbstractCegarLoop]: Abstraction has 6140 states and 30178 transitions. [2022-11-16 11:35:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:35:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 30178 transitions. [2022-11-16 11:35:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:35:52,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:52,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:52,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:52,283 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 22590936, now seen corresponding path program 1 times [2022-11-16 11:35:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:52,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072850716] [2022-11-16 11:35:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:52,284 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 [2022-11-16 11:35:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:52,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:52,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 11:35:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:52,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:35:52,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:52,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:52,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072850716] [2022-11-16 11:35:52,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072850716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:52,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:52,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:35:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424709399] [2022-11-16 11:35:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:35:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:35:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:35:52,481 INFO L87 Difference]: Start difference. First operand 6140 states and 30178 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-16 11:35:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:53,231 INFO L93 Difference]: Finished difference Result 9270 states and 45274 transitions. [2022-11-16 11:35:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:35:53,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2022-11-16 11:35:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:53,269 INFO L225 Difference]: With dead ends: 9270 [2022-11-16 11:35:53,269 INFO L226 Difference]: Without dead ends: 9270 [2022-11-16 11:35:53,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:35:53,270 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 287 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:53,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 10 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:35:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9270 states. [2022-11-16 11:35:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9270 to 7204. [2022-11-16 11:35:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 7065 states have (on average 5.179051663128096) internal successors, (36590), 7203 states have internal predecessors, (36590), 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) [2022-11-16 11:35:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 36590 transitions. [2022-11-16 11:35:53,620 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 36590 transitions. Word has length 7 [2022-11-16 11:35:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:53,620 INFO L495 AbstractCegarLoop]: Abstraction has 7204 states and 36590 transitions. [2022-11-16 11:35:53,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-16 11:35:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 36590 transitions. [2022-11-16 11:35:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:35:53,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:53,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:53,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-16 11:35:53,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:53,822 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 22591086, now seen corresponding path program 1 times [2022-11-16 11:35:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:53,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869866766] [2022-11-16 11:35:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:53,823 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 [2022-11-16 11:35:53,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:53,826 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:53,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:35:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:53,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:35:53,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:54,167 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-16 11:35:54,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-16 11:35:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:54,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:54,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869866766] [2022-11-16 11:35:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869866766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:54,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:54,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50350387] [2022-11-16 11:35:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:54,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:54,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:54,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:54,501 INFO L87 Difference]: Start difference. First operand 7204 states and 36590 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:54,771 INFO L93 Difference]: Finished difference Result 7203 states and 36587 transitions. [2022-11-16 11:35:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:54,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-16 11:35:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:54,801 INFO L225 Difference]: With dead ends: 7203 [2022-11-16 11:35:54,801 INFO L226 Difference]: Without dead ends: 7203 [2022-11-16 11:35:54,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:54,802 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:54,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2022-11-16 11:35:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 7203. [2022-11-16 11:35:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 7064 states have (on average 5.17936013590034) internal successors, (36587), 7202 states have internal predecessors, (36587), 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) [2022-11-16 11:35:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 36587 transitions. [2022-11-16 11:35:54,976 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 36587 transitions. Word has length 7 [2022-11-16 11:35:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:54,977 INFO L495 AbstractCegarLoop]: Abstraction has 7203 states and 36587 transitions. [2022-11-16 11:35:54,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 36587 transitions. [2022-11-16 11:35:54,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:35:54,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:54,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:54,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-16 11:35:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:55,179 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash 22591087, now seen corresponding path program 1 times [2022-11-16 11:35:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:55,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445533180] [2022-11-16 11:35:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:55,179 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 [2022-11-16 11:35:55,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:55,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:55,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 11:35:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:35:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:55,763 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-16 11:35:55,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-16 11:35:55,828 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:35:55,828 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 52 treesize of output 46 [2022-11-16 11:35:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:55,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:55,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:55,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445533180] [2022-11-16 11:35:55,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445533180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:55,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:55,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:55,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397544545] [2022-11-16 11:35:55,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:56,000 INFO L87 Difference]: Start difference. First operand 7203 states and 36587 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:56,234 INFO L93 Difference]: Finished difference Result 7202 states and 36584 transitions. [2022-11-16 11:35:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:56,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-16 11:35:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:56,262 INFO L225 Difference]: With dead ends: 7202 [2022-11-16 11:35:56,262 INFO L226 Difference]: Without dead ends: 7202 [2022-11-16 11:35:56,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:56,263 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:56,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2022-11-16 11:35:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 7202. [2022-11-16 11:35:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7202 states, 7063 states have (on average 5.179668696021521) internal successors, (36584), 7201 states have internal predecessors, (36584), 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) [2022-11-16 11:35:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 36584 transitions. [2022-11-16 11:35:56,495 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 36584 transitions. Word has length 7 [2022-11-16 11:35:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:56,495 INFO L495 AbstractCegarLoop]: Abstraction has 7202 states and 36584 transitions. [2022-11-16 11:35:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 36584 transitions. [2022-11-16 11:35:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:35:56,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:56,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:56,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:56,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:56,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash 22856039, now seen corresponding path program 1 times [2022-11-16 11:35:56,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:56,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923527705] [2022-11-16 11:35:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:56,701 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 [2022-11-16 11:35:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:56,702 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:56,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:35:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:56,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:35:56,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:57,015 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:35:57,016 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:35:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:57,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:57,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:57,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923527705] [2022-11-16 11:35:57,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923527705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:57,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:57,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:57,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071115785] [2022-11-16 11:35:57,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:57,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:57,505 INFO L87 Difference]: Start difference. First operand 7202 states and 36584 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:57,728 INFO L93 Difference]: Finished difference Result 7201 states and 36581 transitions. [2022-11-16 11:35:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-16 11:35:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:57,757 INFO L225 Difference]: With dead ends: 7201 [2022-11-16 11:35:57,757 INFO L226 Difference]: Without dead ends: 7201 [2022-11-16 11:35:57,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:57,757 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:57,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2022-11-16 11:35:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7201. [2022-11-16 11:35:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7201 states, 7062 states have (on average 5.179977343528745) internal successors, (36581), 7200 states have internal predecessors, (36581), 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) [2022-11-16 11:35:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7201 states to 7201 states and 36581 transitions. [2022-11-16 11:35:57,918 INFO L78 Accepts]: Start accepts. Automaton has 7201 states and 36581 transitions. Word has length 7 [2022-11-16 11:35:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:57,918 INFO L495 AbstractCegarLoop]: Abstraction has 7201 states and 36581 transitions. [2022-11-16 11:35:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7201 states and 36581 transitions. [2022-11-16 11:35:57,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:35:57,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:57,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:57,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:58,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:58,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 22856041, now seen corresponding path program 1 times [2022-11-16 11:35:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414239663] [2022-11-16 11:35:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:58,120 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 [2022-11-16 11:35:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:58,121 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:58,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (19)] Waiting until timeout for monitored process [2022-11-16 11:35:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:58,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:35:58,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:35:58,610 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:35:58,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:35:58,653 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:35:58,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:35:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:35:58,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:35:58,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:58,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414239663] [2022-11-16 11:35:58,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414239663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:35:58,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:35:58,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:35:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529887929] [2022-11-16 11:35:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:35:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:35:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:35:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:58,839 INFO L87 Difference]: Start difference. First operand 7201 states and 36581 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:59,103 INFO L93 Difference]: Finished difference Result 7200 states and 36578 transitions. [2022-11-16 11:35:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:35:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-16 11:35:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:59,137 INFO L225 Difference]: With dead ends: 7200 [2022-11-16 11:35:59,138 INFO L226 Difference]: Without dead ends: 7200 [2022-11-16 11:35:59,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:35:59,138 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:59,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:35:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-11-16 11:35:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7200. [2022-11-16 11:35:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7200 states, 7061 states have (on average 5.180286078459142) internal successors, (36578), 7199 states have internal predecessors, (36578), 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) [2022-11-16 11:35:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7200 states to 7200 states and 36578 transitions. [2022-11-16 11:35:59,396 INFO L78 Accepts]: Start accepts. Automaton has 7200 states and 36578 transitions. Word has length 7 [2022-11-16 11:35:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 7200 states and 36578 transitions. [2022-11-16 11:35:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-16 11:35:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7200 states and 36578 transitions. [2022-11-16 11:35:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:35:59,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:59,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:59,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:35:59,597 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:35:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 700324720, now seen corresponding path program 1 times [2022-11-16 11:35:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:59,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591025224] [2022-11-16 11:35:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:35:59,599 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 [2022-11-16 11:35:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:59,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:35:59,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:35:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:35:59,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:35:59,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:00,112 INFO L321 Elim1Store]: treesize reduction 220, result has 25.7 percent of original size [2022-11-16 11:36:00,113 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 5 case distinctions, treesize of input 23 treesize of output 83 [2022-11-16 11:36:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:00,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:00,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:00,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591025224] [2022-11-16 11:36:00,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591025224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:00,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:00,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 11:36:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616437338] [2022-11-16 11:36:00,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:36:00,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:36:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:36:00,731 INFO L87 Difference]: Start difference. First operand 7200 states and 36578 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-11-16 11:36:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:03,576 INFO L93 Difference]: Finished difference Result 12266 states and 62458 transitions. [2022-11-16 11:36:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:36:03,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 8 [2022-11-16 11:36:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:03,656 INFO L225 Difference]: With dead ends: 12266 [2022-11-16 11:36:03,657 INFO L226 Difference]: Without dead ends: 12266 [2022-11-16 11:36:03,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:36:03,658 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 497 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:03,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 18 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:36:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2022-11-16 11:36:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 10392. [2022-11-16 11:36:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10392 states, 10253 states have (on average 5.340095581780942) internal successors, (54752), 10391 states have internal predecessors, (54752), 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) [2022-11-16 11:36:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10392 states to 10392 states and 54752 transitions. [2022-11-16 11:36:04,008 INFO L78 Accepts]: Start accepts. Automaton has 10392 states and 54752 transitions. Word has length 8 [2022-11-16 11:36:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:04,008 INFO L495 AbstractCegarLoop]: Abstraction has 10392 states and 54752 transitions. [2022-11-16 11:36:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-11-16 11:36:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10392 states and 54752 transitions. [2022-11-16 11:36:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:04,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:04,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:04,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:04,211 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 700324870, now seen corresponding path program 1 times [2022-11-16 11:36:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841102586] [2022-11-16 11:36:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,213 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 [2022-11-16 11:36:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:04,214 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:04,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 11:36:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:04,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:04,585 INFO L321 Elim1Store]: treesize reduction 316, result has 11.2 percent of original size [2022-11-16 11:36:04,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 92 [2022-11-16 11:36:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:04,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:04,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841102586] [2022-11-16 11:36:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841102586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:04,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953256388] [2022-11-16 11:36:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:04,939 INFO L87 Difference]: Start difference. First operand 10392 states and 54752 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:05,299 INFO L93 Difference]: Finished difference Result 10388 states and 54739 transitions. [2022-11-16 11:36:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:05,350 INFO L225 Difference]: With dead ends: 10388 [2022-11-16 11:36:05,350 INFO L226 Difference]: Without dead ends: 10388 [2022-11-16 11:36:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:05,351 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10388 states. [2022-11-16 11:36:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10388 to 10388. [2022-11-16 11:36:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10249 states have (on average 5.340911308420334) internal successors, (54739), 10387 states have internal predecessors, (54739), 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) [2022-11-16 11:36:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 54739 transitions. [2022-11-16 11:36:05,621 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 54739 transitions. Word has length 8 [2022-11-16 11:36:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:05,621 INFO L495 AbstractCegarLoop]: Abstraction has 10388 states and 54739 transitions. [2022-11-16 11:36:05,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 54739 transitions. [2022-11-16 11:36:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:05,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:05,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:05,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:05,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash 700324871, now seen corresponding path program 1 times [2022-11-16 11:36:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:05,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341983344] [2022-11-16 11:36:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:05,828 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 [2022-11-16 11:36:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:05,829 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:05,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (22)] Waiting until timeout for monitored process [2022-11-16 11:36:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:06,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:36:06,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:06,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:06,378 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-16 11:36:06,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-16 11:36:06,433 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:36:06,433 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 52 treesize of output 46 [2022-11-16 11:36:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:06,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:06,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341983344] [2022-11-16 11:36:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341983344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:06,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:06,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908532835] [2022-11-16 11:36:06,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:06,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:06,630 INFO L87 Difference]: Start difference. First operand 10388 states and 54739 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:06,911 INFO L93 Difference]: Finished difference Result 10384 states and 54726 transitions. [2022-11-16 11:36:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:06,963 INFO L225 Difference]: With dead ends: 10384 [2022-11-16 11:36:06,963 INFO L226 Difference]: Without dead ends: 10384 [2022-11-16 11:36:06,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:06,964 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2022-11-16 11:36:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10384. [2022-11-16 11:36:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10384 states, 10245 states have (on average 5.341727672035139) internal successors, (54726), 10383 states have internal predecessors, (54726), 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) [2022-11-16 11:36:07,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10384 states to 10384 states and 54726 transitions. [2022-11-16 11:36:07,440 INFO L78 Accepts]: Start accepts. Automaton has 10384 states and 54726 transitions. Word has length 8 [2022-11-16 11:36:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:07,440 INFO L495 AbstractCegarLoop]: Abstraction has 10384 states and 54726 transitions. [2022-11-16 11:36:07,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10384 states and 54726 transitions. [2022-11-16 11:36:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:07,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:07,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:07,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:07,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:07,643 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 700444216, now seen corresponding path program 1 times [2022-11-16 11:36:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:07,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133485351] [2022-11-16 11:36:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:07,644 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 [2022-11-16 11:36:07,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:07,645 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:07,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (23)] Waiting until timeout for monitored process [2022-11-16 11:36:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:36:07,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:07,992 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:07,993 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:08,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:08,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:08,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133485351] [2022-11-16 11:36:08,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133485351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:08,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:08,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967349809] [2022-11-16 11:36:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:08,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:08,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:08,575 INFO L87 Difference]: Start difference. First operand 10384 states and 54726 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:08,840 INFO L93 Difference]: Finished difference Result 10383 states and 54723 transitions. [2022-11-16 11:36:08,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:08,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:08,892 INFO L225 Difference]: With dead ends: 10383 [2022-11-16 11:36:08,892 INFO L226 Difference]: Without dead ends: 10383 [2022-11-16 11:36:08,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:08,893 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2022-11-16 11:36:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10383. [2022-11-16 11:36:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10383 states, 10244 states have (on average 5.34195626708317) internal successors, (54723), 10382 states have internal predecessors, (54723), 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) [2022-11-16 11:36:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10383 states to 10383 states and 54723 transitions. [2022-11-16 11:36:09,175 INFO L78 Accepts]: Start accepts. Automaton has 10383 states and 54723 transitions. Word has length 8 [2022-11-16 11:36:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:09,176 INFO L495 AbstractCegarLoop]: Abstraction has 10383 states and 54723 transitions. [2022-11-16 11:36:09,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10383 states and 54723 transitions. [2022-11-16 11:36:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:09,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:09,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:09,377 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 700444218, now seen corresponding path program 1 times [2022-11-16 11:36:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:09,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810236713] [2022-11-16 11:36:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:09,378 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 [2022-11-16 11:36:09,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:09,379 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:09,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (24)] Waiting until timeout for monitored process [2022-11-16 11:36:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:36:09,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:09,891 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:09,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:09,941 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:09,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:10,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:10,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:10,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810236713] [2022-11-16 11:36:10,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810236713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:10,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:10,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632448104] [2022-11-16 11:36:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:10,130 INFO L87 Difference]: Start difference. First operand 10383 states and 54723 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:10,636 INFO L93 Difference]: Finished difference Result 10382 states and 54720 transitions. [2022-11-16 11:36:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:10,684 INFO L225 Difference]: With dead ends: 10382 [2022-11-16 11:36:10,684 INFO L226 Difference]: Without dead ends: 10382 [2022-11-16 11:36:10,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:10,685 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:10,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10382 states. [2022-11-16 11:36:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10382 to 10382. [2022-11-16 11:36:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10382 states, 10243 states have (on average 5.342184906765596) internal successors, (54720), 10381 states have internal predecessors, (54720), 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) [2022-11-16 11:36:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10382 states to 10382 states and 54720 transitions. [2022-11-16 11:36:10,930 INFO L78 Accepts]: Start accepts. Automaton has 10382 states and 54720 transitions. Word has length 8 [2022-11-16 11:36:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:10,930 INFO L495 AbstractCegarLoop]: Abstraction has 10382 states and 54720 transitions. [2022-11-16 11:36:10,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10382 states and 54720 transitions. [2022-11-16 11:36:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:10,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:10,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:10,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:11,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:11,134 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 708530194, now seen corresponding path program 1 times [2022-11-16 11:36:11,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:11,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983826982] [2022-11-16 11:36:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:11,135 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 [2022-11-16 11:36:11,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:11,136 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:11,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (25)] Waiting until timeout for monitored process [2022-11-16 11:36:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:11,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:11,536 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:11,537 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:12,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:12,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:12,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983826982] [2022-11-16 11:36:12,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983826982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:12,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:12,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17944419] [2022-11-16 11:36:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:12,088 INFO L87 Difference]: Start difference. First operand 10382 states and 54720 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:12,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:12,349 INFO L93 Difference]: Finished difference Result 10381 states and 54717 transitions. [2022-11-16 11:36:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:12,394 INFO L225 Difference]: With dead ends: 10381 [2022-11-16 11:36:12,394 INFO L226 Difference]: Without dead ends: 10381 [2022-11-16 11:36:12,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:12,395 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:12,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10381 states. [2022-11-16 11:36:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10381 to 10381. [2022-11-16 11:36:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10381 states, 10242 states have (on average 5.3424135910954895) internal successors, (54717), 10380 states have internal predecessors, (54717), 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) [2022-11-16 11:36:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10381 states to 10381 states and 54717 transitions. [2022-11-16 11:36:12,770 INFO L78 Accepts]: Start accepts. Automaton has 10381 states and 54717 transitions. Word has length 8 [2022-11-16 11:36:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:12,770 INFO L495 AbstractCegarLoop]: Abstraction has 10381 states and 54717 transitions. [2022-11-16 11:36:12,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10381 states and 54717 transitions. [2022-11-16 11:36:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:36:12,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:12,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:12,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (25)] Ended with exit code 0 [2022-11-16 11:36:12,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:12,984 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 708530196, now seen corresponding path program 1 times [2022-11-16 11:36:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629242512] [2022-11-16 11:36:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:12,985 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 [2022-11-16 11:36:12,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:12,986 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:12,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (26)] Waiting until timeout for monitored process [2022-11-16 11:36:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:13,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:13,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:13,475 INFO L321 Elim1Store]: treesize reduction 115, result has 33.5 percent of original size [2022-11-16 11:36:13,475 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 5 case distinctions, treesize of input 23 treesize of output 65 [2022-11-16 11:36:13,538 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-16 11:36:13,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 275 [2022-11-16 11:36:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:13,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:13,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:13,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629242512] [2022-11-16 11:36:13,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629242512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:13,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:13,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201059247] [2022-11-16 11:36:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:13,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:13,768 INFO L87 Difference]: Start difference. First operand 10381 states and 54717 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:14,040 INFO L93 Difference]: Finished difference Result 10380 states and 54714 transitions. [2022-11-16 11:36:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:14,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-16 11:36:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:14,085 INFO L225 Difference]: With dead ends: 10380 [2022-11-16 11:36:14,085 INFO L226 Difference]: Without dead ends: 10380 [2022-11-16 11:36:14,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:14,085 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2022-11-16 11:36:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 10380. [2022-11-16 11:36:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10380 states, 10241 states have (on average 5.342642320085929) internal successors, (54714), 10379 states have internal predecessors, (54714), 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) [2022-11-16 11:36:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10380 states to 10380 states and 54714 transitions. [2022-11-16 11:36:14,327 INFO L78 Accepts]: Start accepts. Automaton has 10380 states and 54714 transitions. Word has length 8 [2022-11-16 11:36:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:14,328 INFO L495 AbstractCegarLoop]: Abstraction has 10380 states and 54714 transitions. [2022-11-16 11:36:14,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-16 11:36:14,328 INFO L276 IsEmpty]: Start isEmpty. Operand 10380 states and 54714 transitions. [2022-11-16 11:36:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:14,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:14,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:14,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:14,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:14,531 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 235234547, now seen corresponding path program 1 times [2022-11-16 11:36:14,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:14,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201209302] [2022-11-16 11:36:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:14,532 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 [2022-11-16 11:36:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:14,533 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:14,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (27)] Waiting until timeout for monitored process [2022-11-16 11:36:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:36:14,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:14,909 INFO L321 Elim1Store]: treesize reduction 320, result has 10.1 percent of original size [2022-11-16 11:36:14,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 88 [2022-11-16 11:36:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:36:15,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:15,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:15,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201209302] [2022-11-16 11:36:15,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201209302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:15,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:15,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428724761] [2022-11-16 11:36:15,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:15,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:15,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:15,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:15,743 INFO L87 Difference]: Start difference. First operand 10380 states and 54714 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:15,981 INFO L93 Difference]: Finished difference Result 10379 states and 54713 transitions. [2022-11-16 11:36:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:16,026 INFO L225 Difference]: With dead ends: 10379 [2022-11-16 11:36:16,026 INFO L226 Difference]: Without dead ends: 10379 [2022-11-16 11:36:16,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:16,027 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:16,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2022-11-16 11:36:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10379. [2022-11-16 11:36:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10241 states have (on average 5.342544673371741) internal successors, (54713), 10378 states have internal predecessors, (54713), 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) [2022-11-16 11:36:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 54713 transitions. [2022-11-16 11:36:16,278 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 54713 transitions. Word has length 9 [2022-11-16 11:36:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:16,278 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 54713 transitions. [2022-11-16 11:36:16,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 54713 transitions. [2022-11-16 11:36:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:16,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:16,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:16,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:16,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:16,479 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:16,480 INFO L85 PathProgramCache]: Analyzing trace with hash 235234548, now seen corresponding path program 1 times [2022-11-16 11:36:16,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:16,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478104589] [2022-11-16 11:36:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:16,481 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 [2022-11-16 11:36:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:16,481 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:16,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (28)] Waiting until timeout for monitored process [2022-11-16 11:36:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:16,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:36:16,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:16,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:17,021 INFO L321 Elim1Store]: treesize reduction 73, result has 40.2 percent of original size [2022-11-16 11:36:17,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 56 [2022-11-16 11:36:17,074 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-16 11:36:17,074 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 52 treesize of output 46 [2022-11-16 11:36:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:36:17,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:17,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:17,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478104589] [2022-11-16 11:36:17,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478104589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:17,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:17,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:17,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428676325] [2022-11-16 11:36:17,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:17,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:17,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:17,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:17,270 INFO L87 Difference]: Start difference. First operand 10379 states and 54713 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:17,527 INFO L93 Difference]: Finished difference Result 10378 states and 54712 transitions. [2022-11-16 11:36:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:17,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:17,571 INFO L225 Difference]: With dead ends: 10378 [2022-11-16 11:36:17,571 INFO L226 Difference]: Without dead ends: 10378 [2022-11-16 11:36:17,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:17,572 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:17,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2022-11-16 11:36:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10378. [2022-11-16 11:36:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10241 states have (on average 5.3424470266575526) internal successors, (54712), 10377 states have internal predecessors, (54712), 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) [2022-11-16 11:36:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 54712 transitions. [2022-11-16 11:36:17,928 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 54712 transitions. Word has length 9 [2022-11-16 11:36:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:17,928 INFO L495 AbstractCegarLoop]: Abstraction has 10378 states and 54712 transitions. [2022-11-16 11:36:17,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 54712 transitions. [2022-11-16 11:36:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:17,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:17,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:17,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:18,130 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash 235220500, now seen corresponding path program 1 times [2022-11-16 11:36:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:18,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533865434] [2022-11-16 11:36:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:18,131 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 [2022-11-16 11:36:18,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:18,133 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:18,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (29)] Waiting until timeout for monitored process [2022-11-16 11:36:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:36:18,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:18,477 INFO L321 Elim1Store]: treesize reduction 296, result has 11.9 percent of original size [2022-11-16 11:36:18,477 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 8 case distinctions, treesize of input 60 treesize of output 81 [2022-11-16 11:36:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:18,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:18,745 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:18,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533865434] [2022-11-16 11:36:18,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533865434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:18,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:18,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996214846] [2022-11-16 11:36:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:18,746 INFO L87 Difference]: Start difference. First operand 10378 states and 54712 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:18,978 INFO L93 Difference]: Finished difference Result 10377 states and 54709 transitions. [2022-11-16 11:36:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:18,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:19,019 INFO L225 Difference]: With dead ends: 10377 [2022-11-16 11:36:19,019 INFO L226 Difference]: Without dead ends: 10377 [2022-11-16 11:36:19,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:19,020 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:19,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2022-11-16 11:36:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 10377. [2022-11-16 11:36:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10377 states, 10240 states have (on average 5.34267578125) internal successors, (54709), 10376 states have internal predecessors, (54709), 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) [2022-11-16 11:36:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10377 states to 10377 states and 54709 transitions. [2022-11-16 11:36:19,246 INFO L78 Accepts]: Start accepts. Automaton has 10377 states and 54709 transitions. Word has length 9 [2022-11-16 11:36:19,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:19,247 INFO L495 AbstractCegarLoop]: Abstraction has 10377 states and 54709 transitions. [2022-11-16 11:36:19,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10377 states and 54709 transitions. [2022-11-16 11:36:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:19,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:19,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:19,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:19,448 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:19,448 INFO L85 PathProgramCache]: Analyzing trace with hash 235220502, now seen corresponding path program 1 times [2022-11-16 11:36:19,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:19,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849226254] [2022-11-16 11:36:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:19,449 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 [2022-11-16 11:36:19,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:19,449 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:19,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (30)] Waiting until timeout for monitored process [2022-11-16 11:36:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:36:19,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:19,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:19,949 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:19,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:19,990 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:19,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:20,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:20,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:20,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849226254] [2022-11-16 11:36:20,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849226254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:20,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:20,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536729046] [2022-11-16 11:36:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:20,158 INFO L87 Difference]: Start difference. First operand 10377 states and 54709 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:20,483 INFO L93 Difference]: Finished difference Result 10376 states and 54706 transitions. [2022-11-16 11:36:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:20,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:20,523 INFO L225 Difference]: With dead ends: 10376 [2022-11-16 11:36:20,524 INFO L226 Difference]: Without dead ends: 10376 [2022-11-16 11:36:20,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:20,524 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:20,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10376 states. [2022-11-16 11:36:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10376 to 10376. [2022-11-16 11:36:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10376 states, 10239 states have (on average 5.342904580525442) internal successors, (54706), 10375 states have internal predecessors, (54706), 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) [2022-11-16 11:36:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 54706 transitions. [2022-11-16 11:36:20,750 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 54706 transitions. Word has length 9 [2022-11-16 11:36:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:20,750 INFO L495 AbstractCegarLoop]: Abstraction has 10376 states and 54706 transitions. [2022-11-16 11:36:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:20,750 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 54706 transitions. [2022-11-16 11:36:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:20,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:20,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:20,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (30)] Ended with exit code 0 [2022-11-16 11:36:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:20,951 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash 238927201, now seen corresponding path program 1 times [2022-11-16 11:36:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:20,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892055270] [2022-11-16 11:36:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:20,952 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 [2022-11-16 11:36:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:20,952 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:20,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (31)] Waiting until timeout for monitored process [2022-11-16 11:36:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:21,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:36:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:21,315 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:21,316 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:21,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:21,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:21,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892055270] [2022-11-16 11:36:21,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892055270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:21,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:21,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:21,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584946070] [2022-11-16 11:36:21,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:21,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:21,915 INFO L87 Difference]: Start difference. First operand 10376 states and 54706 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:22,135 INFO L93 Difference]: Finished difference Result 10375 states and 54703 transitions. [2022-11-16 11:36:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:22,177 INFO L225 Difference]: With dead ends: 10375 [2022-11-16 11:36:22,177 INFO L226 Difference]: Without dead ends: 10375 [2022-11-16 11:36:22,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:22,178 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:22,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2022-11-16 11:36:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 10375. [2022-11-16 11:36:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10375 states, 10238 states have (on average 5.343133424496972) internal successors, (54703), 10374 states have internal predecessors, (54703), 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) [2022-11-16 11:36:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10375 states to 10375 states and 54703 transitions. [2022-11-16 11:36:22,542 INFO L78 Accepts]: Start accepts. Automaton has 10375 states and 54703 transitions. Word has length 9 [2022-11-16 11:36:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 10375 states and 54703 transitions. [2022-11-16 11:36:22,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10375 states and 54703 transitions. [2022-11-16 11:36:22,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:22,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:22,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:22,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:22,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:22,743 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:22,744 INFO L85 PathProgramCache]: Analyzing trace with hash 238927203, now seen corresponding path program 1 times [2022-11-16 11:36:22,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:22,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583527554] [2022-11-16 11:36:22,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:22,744 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 [2022-11-16 11:36:22,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:22,745 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:22,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (32)] Waiting until timeout for monitored process [2022-11-16 11:36:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:22,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:36:22,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:22,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:22,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:22,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:22,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:22,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:22,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:23,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:23,289 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:23,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:23,331 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:23,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:23,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:23,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:23,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583527554] [2022-11-16 11:36:23,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583527554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:23,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:23,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670343335] [2022-11-16 11:36:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:23,529 INFO L87 Difference]: Start difference. First operand 10375 states and 54703 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:23,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:23,793 INFO L93 Difference]: Finished difference Result 10374 states and 54700 transitions. [2022-11-16 11:36:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:23,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:23,844 INFO L225 Difference]: With dead ends: 10374 [2022-11-16 11:36:23,844 INFO L226 Difference]: Without dead ends: 10374 [2022-11-16 11:36:23,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:23,845 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:23,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10374 states. [2022-11-16 11:36:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10374 to 10374. [2022-11-16 11:36:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10374 states, 10237 states have (on average 5.343362313177689) internal successors, (54700), 10373 states have internal predecessors, (54700), 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) [2022-11-16 11:36:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10374 states to 10374 states and 54700 transitions. [2022-11-16 11:36:24,120 INFO L78 Accepts]: Start accepts. Automaton has 10374 states and 54700 transitions. Word has length 9 [2022-11-16 11:36:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:24,121 INFO L495 AbstractCegarLoop]: Abstraction has 10374 states and 54700 transitions. [2022-11-16 11:36:24,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10374 states and 54700 transitions. [2022-11-16 11:36:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:24,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:24,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:24,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:24,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:24,323 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 489597572, now seen corresponding path program 1 times [2022-11-16 11:36:24,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:24,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977032617] [2022-11-16 11:36:24,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:24,324 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 [2022-11-16 11:36:24,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:24,325 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:24,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (33)] Waiting until timeout for monitored process [2022-11-16 11:36:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:24,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:36:24,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:24,713 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:24,713 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:25,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:25,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:25,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977032617] [2022-11-16 11:36:25,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977032617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:25,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:25,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856271385] [2022-11-16 11:36:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:25,456 INFO L87 Difference]: Start difference. First operand 10374 states and 54700 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:25,701 INFO L93 Difference]: Finished difference Result 10375 states and 54706 transitions. [2022-11-16 11:36:25,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:25,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:25,753 INFO L225 Difference]: With dead ends: 10375 [2022-11-16 11:36:25,753 INFO L226 Difference]: Without dead ends: 10375 [2022-11-16 11:36:25,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:25,754 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:25,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2022-11-16 11:36:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 10375. [2022-11-16 11:36:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10375 states, 10238 states have (on average 5.343426450478609) internal successors, (54706), 10374 states have internal predecessors, (54706), 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) [2022-11-16 11:36:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10375 states to 10375 states and 54706 transitions. [2022-11-16 11:36:26,043 INFO L78 Accepts]: Start accepts. Automaton has 10375 states and 54706 transitions. Word has length 9 [2022-11-16 11:36:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:26,043 INFO L495 AbstractCegarLoop]: Abstraction has 10375 states and 54706 transitions. [2022-11-16 11:36:26,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:26,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10375 states and 54706 transitions. [2022-11-16 11:36:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:26,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:26,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:26,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:26,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:26,245 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash 489597574, now seen corresponding path program 1 times [2022-11-16 11:36:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:26,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172892591] [2022-11-16 11:36:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:26,245 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 [2022-11-16 11:36:26,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:26,246 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:26,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (34)] Waiting until timeout for monitored process [2022-11-16 11:36:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:26,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:36:26,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:26,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:26,862 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:26,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:26,911 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:26,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:27,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:27,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172892591] [2022-11-16 11:36:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172892591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:27,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:27,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:36:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556748088] [2022-11-16 11:36:27,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:36:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:36:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:36:27,563 INFO L87 Difference]: Start difference. First operand 10375 states and 54706 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-16 11:36:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:28,369 INFO L93 Difference]: Finished difference Result 10387 states and 54738 transitions. [2022-11-16 11:36:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:36:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 9 [2022-11-16 11:36:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:28,424 INFO L225 Difference]: With dead ends: 10387 [2022-11-16 11:36:28,424 INFO L226 Difference]: Without dead ends: 10387 [2022-11-16 11:36:28,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:36:28,425 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:28,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 69 Unchecked, 0.7s Time] [2022-11-16 11:36:28,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10387 states. [2022-11-16 11:36:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10387 to 10381. [2022-11-16 11:36:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10381 states, 10244 states have (on average 5.341858648965248) internal successors, (54722), 10380 states have internal predecessors, (54722), 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) [2022-11-16 11:36:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10381 states to 10381 states and 54722 transitions. [2022-11-16 11:36:28,719 INFO L78 Accepts]: Start accepts. Automaton has 10381 states and 54722 transitions. Word has length 9 [2022-11-16 11:36:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:28,720 INFO L495 AbstractCegarLoop]: Abstraction has 10381 states and 54722 transitions. [2022-11-16 11:36:28,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-16 11:36:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 10381 states and 54722 transitions. [2022-11-16 11:36:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:28,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:28,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:28,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (34)] Ended with exit code 0 [2022-11-16 11:36:28,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:28,921 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 489597446, now seen corresponding path program 1 times [2022-11-16 11:36:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:28,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644756844] [2022-11-16 11:36:28,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:28,922 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 [2022-11-16 11:36:28,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:28,923 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:28,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (35)] Waiting until timeout for monitored process [2022-11-16 11:36:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:29,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:36:29,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:29,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:29,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:29,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644756844] [2022-11-16 11:36:29,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644756844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:29,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:29,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:36:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290661603] [2022-11-16 11:36:29,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:29,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:36:29,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:36:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:36:29,169 INFO L87 Difference]: Start difference. First operand 10381 states and 54722 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-16 11:36:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:30,274 INFO L93 Difference]: Finished difference Result 14813 states and 77879 transitions. [2022-11-16 11:36:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:36:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:30,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:30,358 INFO L225 Difference]: With dead ends: 14813 [2022-11-16 11:36:30,358 INFO L226 Difference]: Without dead ends: 14813 [2022-11-16 11:36:30,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:36:30,358 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 248 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 12 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:36:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14813 states. [2022-11-16 11:36:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14813 to 12415. [2022-11-16 11:36:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12415 states, 12278 states have (on average 5.503420752565565) internal successors, (67571), 12414 states have internal predecessors, (67571), 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) [2022-11-16 11:36:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 67571 transitions. [2022-11-16 11:36:30,753 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 67571 transitions. Word has length 9 [2022-11-16 11:36:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:30,753 INFO L495 AbstractCegarLoop]: Abstraction has 12415 states and 67571 transitions. [2022-11-16 11:36:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-16 11:36:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 67571 transitions. [2022-11-16 11:36:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:30,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:30,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:30,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:30,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:30,955 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash 489842111, now seen corresponding path program 1 times [2022-11-16 11:36:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:30,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980078383] [2022-11-16 11:36:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:30,956 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 [2022-11-16 11:36:30,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:30,957 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:30,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (36)] Waiting until timeout for monitored process [2022-11-16 11:36:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:31,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:36:31,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:31,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:31,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:31,567 INFO L321 Elim1Store]: treesize reduction 150, result has 29.9 percent of original size [2022-11-16 11:36:31,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 71 [2022-11-16 11:36:31,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-16 11:36:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:31,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:31,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:31,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980078383] [2022-11-16 11:36:31,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980078383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:31,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:31,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:31,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612897776] [2022-11-16 11:36:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:31,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:31,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:31,816 INFO L87 Difference]: Start difference. First operand 12415 states and 67571 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:32,118 INFO L93 Difference]: Finished difference Result 12415 states and 67574 transitions. [2022-11-16 11:36:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:32,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:32,189 INFO L225 Difference]: With dead ends: 12415 [2022-11-16 11:36:32,190 INFO L226 Difference]: Without dead ends: 12415 [2022-11-16 11:36:32,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:32,190 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:32,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:36:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12415 states. [2022-11-16 11:36:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12415 to 12415. [2022-11-16 11:36:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12415 states, 12278 states have (on average 5.503665092034534) internal successors, (67574), 12414 states have internal predecessors, (67574), 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) [2022-11-16 11:36:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 67574 transitions. [2022-11-16 11:36:32,580 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 67574 transitions. Word has length 9 [2022-11-16 11:36:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:32,580 INFO L495 AbstractCegarLoop]: Abstraction has 12415 states and 67574 transitions. [2022-11-16 11:36:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 67574 transitions. [2022-11-16 11:36:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:36:32,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:32,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:32,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:32,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:32,787 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:32,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash 489842112, now seen corresponding path program 1 times [2022-11-16 11:36:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:32,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719728150] [2022-11-16 11:36:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:32,788 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 [2022-11-16 11:36:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:32,789 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:32,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (37)] Waiting until timeout for monitored process [2022-11-16 11:36:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:33,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:36:33,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:33,171 INFO L321 Elim1Store]: treesize reduction 286, result has 12.3 percent of original size [2022-11-16 11:36:33,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 66 [2022-11-16 11:36:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:33,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:33,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:33,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719728150] [2022-11-16 11:36:33,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719728150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:33,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:33,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996016329] [2022-11-16 11:36:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:33,215 INFO L87 Difference]: Start difference. First operand 12415 states and 67574 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:33,584 INFO L93 Difference]: Finished difference Result 12191 states and 66581 transitions. [2022-11-16 11:36:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:33,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 11:36:33,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:33,654 INFO L225 Difference]: With dead ends: 12191 [2022-11-16 11:36:33,654 INFO L226 Difference]: Without dead ends: 12191 [2022-11-16 11:36:33,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:33,655 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:33,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:36:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2022-11-16 11:36:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12191. [2022-11-16 11:36:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12191 states, 12064 states have (on average 5.518982095490716) internal successors, (66581), 12190 states have internal predecessors, (66581), 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) [2022-11-16 11:36:34,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 66581 transitions. [2022-11-16 11:36:34,086 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 66581 transitions. Word has length 9 [2022-11-16 11:36:34,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:34,087 INFO L495 AbstractCegarLoop]: Abstraction has 12191 states and 66581 transitions. [2022-11-16 11:36:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 11:36:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 66581 transitions. [2022-11-16 11:36:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:34,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:34,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:34,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (37)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:34,288 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1297642068, now seen corresponding path program 1 times [2022-11-16 11:36:34,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:34,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030822290] [2022-11-16 11:36:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:34,289 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 [2022-11-16 11:36:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:34,290 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:34,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (38)] Waiting until timeout for monitored process [2022-11-16 11:36:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:36:34,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:34,693 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:34,694 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:35,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:35,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030822290] [2022-11-16 11:36:35,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030822290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:35,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:35,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079507836] [2022-11-16 11:36:35,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:35,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:35,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:35,390 INFO L87 Difference]: Start difference. First operand 12191 states and 66581 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:35,637 INFO L93 Difference]: Finished difference Result 12187 states and 66564 transitions. [2022-11-16 11:36:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:35,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:35,699 INFO L225 Difference]: With dead ends: 12187 [2022-11-16 11:36:35,699 INFO L226 Difference]: Without dead ends: 12187 [2022-11-16 11:36:35,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:35,699 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:35,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-16 11:36:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12187 states. [2022-11-16 11:36:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12187 to 12187. [2022-11-16 11:36:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12187 states, 12060 states have (on average 5.519402985074627) internal successors, (66564), 12186 states have internal predecessors, (66564), 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) [2022-11-16 11:36:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12187 states to 12187 states and 66564 transitions. [2022-11-16 11:36:36,006 INFO L78 Accepts]: Start accepts. Automaton has 12187 states and 66564 transitions. Word has length 10 [2022-11-16 11:36:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:36,006 INFO L495 AbstractCegarLoop]: Abstraction has 12187 states and 66564 transitions. [2022-11-16 11:36:36,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 12187 states and 66564 transitions. [2022-11-16 11:36:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:36,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:36,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:36,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:36,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:36,211 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1297642066, now seen corresponding path program 1 times [2022-11-16 11:36:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:36,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632062421] [2022-11-16 11:36:36,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:36,212 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 [2022-11-16 11:36:36,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:36,213 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:36,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (39)] Waiting until timeout for monitored process [2022-11-16 11:36:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:36,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:36:36,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:36,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:36,766 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:36,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:36,809 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:36,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:37,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:37,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:37,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632062421] [2022-11-16 11:36:37,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632062421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:37,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:37,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958810630] [2022-11-16 11:36:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:37,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:37,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:37,013 INFO L87 Difference]: Start difference. First operand 12187 states and 66564 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:37,272 INFO L93 Difference]: Finished difference Result 12183 states and 66547 transitions. [2022-11-16 11:36:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:37,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:37,344 INFO L225 Difference]: With dead ends: 12183 [2022-11-16 11:36:37,344 INFO L226 Difference]: Without dead ends: 12183 [2022-11-16 11:36:37,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:37,345 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:37,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-16 11:36:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12183 states. [2022-11-16 11:36:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12183 to 12183. [2022-11-16 11:36:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12183 states, 12056 states have (on average 5.5198241539482416) internal successors, (66547), 12182 states have internal predecessors, (66547), 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) [2022-11-16 11:36:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12183 states to 12183 states and 66547 transitions. [2022-11-16 11:36:37,783 INFO L78 Accepts]: Start accepts. Automaton has 12183 states and 66547 transitions. Word has length 10 [2022-11-16 11:36:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:37,783 INFO L495 AbstractCegarLoop]: Abstraction has 12183 states and 66547 transitions. [2022-11-16 11:36:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:37,784 INFO L276 IsEmpty]: Start isEmpty. Operand 12183 states and 66547 transitions. [2022-11-16 11:36:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:37,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:37,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:37,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (39)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:37,985 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1298106107, now seen corresponding path program 1 times [2022-11-16 11:36:37,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:37,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125880033] [2022-11-16 11:36:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:37,986 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 [2022-11-16 11:36:37,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:37,987 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:37,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (40)] Waiting until timeout for monitored process [2022-11-16 11:36:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:38,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:36:38,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:38,407 INFO L321 Elim1Store]: treesize reduction 300, result has 10.7 percent of original size [2022-11-16 11:36:38,407 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 8 case distinctions, treesize of input 60 treesize of output 77 [2022-11-16 11:36:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:39,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:39,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125880033] [2022-11-16 11:36:39,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125880033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:39,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:39,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:39,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431445035] [2022-11-16 11:36:39,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:39,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:39,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:39,220 INFO L87 Difference]: Start difference. First operand 12183 states and 66547 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:39,536 INFO L93 Difference]: Finished difference Result 12182 states and 66544 transitions. [2022-11-16 11:36:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:39,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:39,613 INFO L225 Difference]: With dead ends: 12182 [2022-11-16 11:36:39,614 INFO L226 Difference]: Without dead ends: 12182 [2022-11-16 11:36:39,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:39,614 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:39,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-16 11:36:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12182 states. [2022-11-16 11:36:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12182 to 12182. [2022-11-16 11:36:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12182 states, 12055 states have (on average 5.520033181252592) internal successors, (66544), 12181 states have internal predecessors, (66544), 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) [2022-11-16 11:36:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12182 states to 12182 states and 66544 transitions. [2022-11-16 11:36:40,067 INFO L78 Accepts]: Start accepts. Automaton has 12182 states and 66544 transitions. Word has length 10 [2022-11-16 11:36:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:40,067 INFO L495 AbstractCegarLoop]: Abstraction has 12182 states and 66544 transitions. [2022-11-16 11:36:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:40,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12182 states and 66544 transitions. [2022-11-16 11:36:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:40,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:40,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:40,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (40)] Ended with exit code 0 [2022-11-16 11:36:40,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:40,268 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1298106105, now seen corresponding path program 1 times [2022-11-16 11:36:40,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:40,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076034193] [2022-11-16 11:36:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:40,269 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 [2022-11-16 11:36:40,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:40,270 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:40,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (41)] Waiting until timeout for monitored process [2022-11-16 11:36:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:40,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:36:40,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:40,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:40,880 INFO L321 Elim1Store]: treesize reduction 102, result has 35.0 percent of original size [2022-11-16 11:36:40,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 62 [2022-11-16 11:36:40,926 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:36:40,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2022-11-16 11:36:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:41,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:41,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076034193] [2022-11-16 11:36:41,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076034193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:41,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:41,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-16 11:36:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029035557] [2022-11-16 11:36:41,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:36:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:36:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:36:41,569 INFO L87 Difference]: Start difference. First operand 12182 states and 66544 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-16 11:36:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:42,634 INFO L93 Difference]: Finished difference Result 24348 states and 133038 transitions. [2022-11-16 11:36:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:36:42,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 10 [2022-11-16 11:36:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:42,808 INFO L225 Difference]: With dead ends: 24348 [2022-11-16 11:36:42,808 INFO L226 Difference]: Without dead ends: 24348 [2022-11-16 11:36:42,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:36:42,809 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 165 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 229 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:42,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 8 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 229 Unchecked, 0.7s Time] [2022-11-16 11:36:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24348 states. [2022-11-16 11:36:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24348 to 12217. [2022-11-16 11:36:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12217 states, 12094 states have (on average 5.514635356375062) internal successors, (66694), 12216 states have internal predecessors, (66694), 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) [2022-11-16 11:36:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12217 states to 12217 states and 66694 transitions. [2022-11-16 11:36:43,427 INFO L78 Accepts]: Start accepts. Automaton has 12217 states and 66694 transitions. Word has length 10 [2022-11-16 11:36:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:43,427 INFO L495 AbstractCegarLoop]: Abstraction has 12217 states and 66694 transitions. [2022-11-16 11:36:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-16 11:36:43,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12217 states and 66694 transitions. [2022-11-16 11:36:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:43,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:43,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:43,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (41)] Ended with exit code 0 [2022-11-16 11:36:43,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:43,628 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:43,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1183193323, now seen corresponding path program 1 times [2022-11-16 11:36:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:43,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816698755] [2022-11-16 11:36:43,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:43,629 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 [2022-11-16 11:36:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:43,631 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (42)] Waiting until timeout for monitored process [2022-11-16 11:36:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:43,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 11:36:43,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:44,055 INFO L321 Elim1Store]: treesize reduction 296, result has 11.9 percent of original size [2022-11-16 11:36:44,056 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 8 case distinctions, treesize of input 60 treesize of output 81 [2022-11-16 11:36:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:44,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:44,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:44,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816698755] [2022-11-16 11:36:44,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816698755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:44,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:44,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62330702] [2022-11-16 11:36:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:44,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:44,443 INFO L87 Difference]: Start difference. First operand 12217 states and 66694 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:44,739 INFO L93 Difference]: Finished difference Result 12216 states and 66689 transitions. [2022-11-16 11:36:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:44,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:44,813 INFO L225 Difference]: With dead ends: 12216 [2022-11-16 11:36:44,813 INFO L226 Difference]: Without dead ends: 12216 [2022-11-16 11:36:44,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:44,814 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:44,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-16 11:36:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2022-11-16 11:36:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12216. [2022-11-16 11:36:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12093 states have (on average 5.51467791284214) internal successors, (66689), 12215 states have internal predecessors, (66689), 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) [2022-11-16 11:36:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 66689 transitions. [2022-11-16 11:36:45,242 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 66689 transitions. Word has length 10 [2022-11-16 11:36:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:45,242 INFO L495 AbstractCegarLoop]: Abstraction has 12216 states and 66689 transitions. [2022-11-16 11:36:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 66689 transitions. [2022-11-16 11:36:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:45,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:45,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:45,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:45,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:45,447 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1182948784, now seen corresponding path program 1 times [2022-11-16 11:36:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:45,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818583016] [2022-11-16 11:36:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:45,448 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 [2022-11-16 11:36:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:45,449 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (43)] Waiting until timeout for monitored process [2022-11-16 11:36:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:45,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:36:45,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:45,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:45,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:45,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:45,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:46,025 INFO L321 Elim1Store]: treesize reduction 150, result has 29.9 percent of original size [2022-11-16 11:36:46,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 71 [2022-11-16 11:36:46,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-16 11:36:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:46,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:46,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818583016] [2022-11-16 11:36:46,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818583016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:46,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:46,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800712026] [2022-11-16 11:36:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:46,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:46,292 INFO L87 Difference]: Start difference. First operand 12216 states and 66689 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:46,586 INFO L93 Difference]: Finished difference Result 12216 states and 66691 transitions. [2022-11-16 11:36:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:46,650 INFO L225 Difference]: With dead ends: 12216 [2022-11-16 11:36:46,650 INFO L226 Difference]: Without dead ends: 12216 [2022-11-16 11:36:46,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:46,651 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:46,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-16 11:36:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2022-11-16 11:36:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12216. [2022-11-16 11:36:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12093 states have (on average 5.514843297775573) internal successors, (66691), 12215 states have internal predecessors, (66691), 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) [2022-11-16 11:36:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 66691 transitions. [2022-11-16 11:36:46,978 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 66691 transitions. Word has length 10 [2022-11-16 11:36:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:46,978 INFO L495 AbstractCegarLoop]: Abstraction has 12216 states and 66691 transitions. [2022-11-16 11:36:46,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 66691 transitions. [2022-11-16 11:36:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:46,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:46,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:46,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (43)] Ended with exit code 0 [2022-11-16 11:36:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:47,179 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:47,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:47,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2002258518, now seen corresponding path program 1 times [2022-11-16 11:36:47,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:47,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690759047] [2022-11-16 11:36:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:47,180 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 [2022-11-16 11:36:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:47,181 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:47,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (44)] Waiting until timeout for monitored process [2022-11-16 11:36:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:47,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:36:47,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:47,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:47,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:47,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:36:47,774 INFO L321 Elim1Store]: treesize reduction 150, result has 29.9 percent of original size [2022-11-16 11:36:47,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 71 [2022-11-16 11:36:47,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-11-16 11:36:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:48,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:48,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:48,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690759047] [2022-11-16 11:36:48,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690759047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:48,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:48,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:48,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678083671] [2022-11-16 11:36:48,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:48,009 INFO L87 Difference]: Start difference. First operand 12216 states and 66691 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:48,261 INFO L93 Difference]: Finished difference Result 12216 states and 66693 transitions. [2022-11-16 11:36:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:48,327 INFO L225 Difference]: With dead ends: 12216 [2022-11-16 11:36:48,327 INFO L226 Difference]: Without dead ends: 12216 [2022-11-16 11:36:48,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:48,328 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:48,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-16 11:36:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2022-11-16 11:36:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12216. [2022-11-16 11:36:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12093 states have (on average 5.515008682709005) internal successors, (66693), 12215 states have internal predecessors, (66693), 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) [2022-11-16 11:36:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 66693 transitions. [2022-11-16 11:36:48,760 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 66693 transitions. Word has length 10 [2022-11-16 11:36:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:48,760 INFO L495 AbstractCegarLoop]: Abstraction has 12216 states and 66693 transitions. [2022-11-16 11:36:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:48,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 66693 transitions. [2022-11-16 11:36:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:48,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:48,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:48,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (44)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:48,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:48,963 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:48,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2002344244, now seen corresponding path program 1 times [2022-11-16 11:36:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:48,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003462004] [2022-11-16 11:36:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:48,964 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 [2022-11-16 11:36:48,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:48,965 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:48,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (45)] Waiting until timeout for monitored process [2022-11-16 11:36:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:49,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:36:49,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:49,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:49,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:49,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003462004] [2022-11-16 11:36:49,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003462004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:49,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:49,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754951027] [2022-11-16 11:36:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:36:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:36:49,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:49,262 INFO L87 Difference]: Start difference. First operand 12216 states and 66693 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 11:36:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:49,895 INFO L93 Difference]: Finished difference Result 12216 states and 64686 transitions. [2022-11-16 11:36:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:36:49,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:49,971 INFO L225 Difference]: With dead ends: 12216 [2022-11-16 11:36:49,971 INFO L226 Difference]: Without dead ends: 12216 [2022-11-16 11:36:49,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:49,972 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 85 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:49,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:36:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2022-11-16 11:36:50,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12216. [2022-11-16 11:36:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12216 states, 12093 states have (on average 5.349044902009427) internal successors, (64686), 12215 states have internal predecessors, (64686), 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) [2022-11-16 11:36:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 64686 transitions. [2022-11-16 11:36:50,419 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 64686 transitions. Word has length 10 [2022-11-16 11:36:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:50,419 INFO L495 AbstractCegarLoop]: Abstraction has 12216 states and 64686 transitions. [2022-11-16 11:36:50,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 11:36:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 64686 transitions. [2022-11-16 11:36:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:36:50,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:50,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:50,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (45)] Ended with exit code 0 [2022-11-16 11:36:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:50,621 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-11-16 11:36:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2002343717, now seen corresponding path program 1 times [2022-11-16 11:36:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604825320] [2022-11-16 11:36:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:50,622 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 [2022-11-16 11:36:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:50,623 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:50,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_477bad26-4eee-464b-81ac-f1da3b1305d6/bin/uautomizer-tPACEb0tL8/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 (46)] Waiting until timeout for monitored process [2022-11-16 11:36:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:50,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:36:50,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:51,102 INFO L321 Elim1Store]: treesize reduction 296, result has 11.9 percent of original size [2022-11-16 11:36:51,102 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 8 case distinctions, treesize of input 60 treesize of output 81 [2022-11-16 11:36:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:51,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:51,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:51,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604825320] [2022-11-16 11:36:51,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604825320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:51,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:51,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:36:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995004581] [2022-11-16 11:36:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:51,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:51,493 INFO L87 Difference]: Start difference. First operand 12216 states and 64686 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-11-16 11:36:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:51,796 INFO L93 Difference]: Finished difference Result 12215 states and 64680 transitions. [2022-11-16 11:36:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-16 11:36:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:51,869 INFO L225 Difference]: With dead ends: 12215 [2022-11-16 11:36:51,869 INFO L226 Difference]: Without dead ends: 12215 [2022-11-16 11:36:51,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:51,870 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:51,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-16 11:36:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states.