./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:25:29,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:25:29,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:25:29,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:25:29,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:25:29,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:25:29,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:25:29,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:25:29,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:25:29,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:25:29,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:25:29,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:25:29,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:25:29,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:25:29,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:25:29,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:25:29,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:25:29,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:25:29,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:25:29,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:25:29,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:25:29,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:25:29,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:25:29,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:25:29,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:25:29,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:25:29,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:25:29,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:25:29,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:25:29,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:25:29,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:25:29,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:25:29,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:25:29,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:25:29,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:25:29,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:25:29,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:25:29,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:25:29,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:25:29,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:25:29,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:25:29,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:25:29,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:25:29,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:25:29,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:25:29,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:25:29,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:25:29,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:25:29,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:25:29,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:25:29,471 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:25:29,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:25:29,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:25:29,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:25:29,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:25:29,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:25:29,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:25:29,474 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:25:29,474 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:25:29,475 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:25:29,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:25:29,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:25:29,476 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:25:29,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:25:29,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:25:29,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:25:29,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:25:29,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:29,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:25:29,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:25:29,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:25:29,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:25:29,481 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_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-11-18 20:25:29,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:25:29,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:25:29,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:25:29,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:25:29,836 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:25:29,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-18 20:25:29,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/7bf41a6e6/a30ece2bfdfc49c9bc1daf91492e4dbb/FLAG7c42fde8e [2022-11-18 20:25:30,508 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:25:30,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-18 20:25:30,528 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/7bf41a6e6/a30ece2bfdfc49c9bc1daf91492e4dbb/FLAG7c42fde8e [2022-11-18 20:25:30,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/7bf41a6e6/a30ece2bfdfc49c9bc1daf91492e4dbb [2022-11-18 20:25:30,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:25:30,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:25:30,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:30,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:25:30,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:25:30,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:30" (1/1) ... [2022-11-18 20:25:30,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8a8331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:30, skipping insertion in model container [2022-11-18 20:25:30,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:30" (1/1) ... [2022-11-18 20:25:30,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:25:30,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:31,266 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-18 20:25:31,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:31,289 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 20:25:31,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22076db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:31, skipping insertion in model container [2022-11-18 20:25:31,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:31,291 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:25:31,293 INFO L158 Benchmark]: Toolchain (without parser) took 447.40ms. Allocated memory is still 96.5MB. Free memory was 57.4MB in the beginning and 70.4MB in the end (delta: -12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:25:31,294 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:25:31,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.93ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 70.4MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:25:31,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.93ms. Allocated memory is still 96.5MB. Free memory was 57.2MB in the beginning and 70.4MB in the end (delta: -13.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:25:33,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:25:33,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:25:33,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:25:33,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:25:33,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:25:33,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:25:33,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:25:33,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:25:33,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:25:33,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:25:33,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:25:33,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:25:34,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:25:34,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:25:34,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:25:34,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:25:34,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:25:34,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:25:34,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:25:34,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:25:34,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:25:34,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:25:34,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:25:34,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:25:34,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:25:34,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:25:34,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:25:34,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:25:34,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:25:34,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:25:34,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:25:34,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:25:34,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:25:34,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:25:34,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:25:34,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:25:34,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:25:34,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:25:34,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:25:34,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:25:34,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:25:34,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:25:34,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:25:34,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:25:34,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:25:34,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:25:34,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:25:34,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:25:34,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:25:34,074 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:25:34,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:25:34,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:25:34,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:25:34,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:25:34,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:25:34,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:25:34,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:25:34,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:25:34,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:25:34,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:25:34,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:25:34,077 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:25:34,077 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:25:34,077 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:25:34,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:25:34,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:25:34,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:25:34,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:25:34,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:34,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:25:34,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:25:34,080 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:25:34,080 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:25:34,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:25:34,081 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_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 [2022-11-18 20:25:34,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:25:34,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:25:34,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:25:34,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:25:34,661 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:25:34,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-18 20:25:34,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/70c9efd05/21ec61bc453447598f9efb77621f4c77/FLAG49e690b87 [2022-11-18 20:25:35,472 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:25:35,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2022-11-18 20:25:35,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/70c9efd05/21ec61bc453447598f9efb77621f4c77/FLAG49e690b87 [2022-11-18 20:25:35,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/data/70c9efd05/21ec61bc453447598f9efb77621f4c77 [2022-11-18 20:25:35,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:25:35,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:25:35,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:35,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:25:35,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:25:35,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:35" (1/1) ... [2022-11-18 20:25:35,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2196f901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:35, skipping insertion in model container [2022-11-18 20:25:35,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:35" (1/1) ... [2022-11-18 20:25:35,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:25:35,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:36,093 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-18 20:25:36,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:36,190 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:25:36,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:36,217 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-18 20:25:36,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:36,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:25:36,260 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-11-18 20:25:36,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:36,283 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:25:36,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36 WrapperNode [2022-11-18 20:25:36,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:36,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:36,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:25:36,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:25:36,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,345 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 202 [2022-11-18 20:25:36,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:36,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:25:36,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:25:36,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:25:36,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,398 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:25:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:25:36,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:25:36,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:25:36,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (1/1) ... [2022-11-18 20:25:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:36,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:36,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:25:36,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:25:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:25:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:25:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:25:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:25:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:25:36,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:25:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:25:36,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:25:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:25:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:25:36,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:25:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:25:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:25:36,534 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:25:36,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:25:36,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:25:37,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:25:37,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:25:37,745 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:25:37,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:37 BoogieIcfgContainer [2022-11-18 20:25:37,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:25:37,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:25:37,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:25:37,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:25:37,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:25:35" (1/3) ... [2022-11-18 20:25:37,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162c1684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:37, skipping insertion in model container [2022-11-18 20:25:37,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:36" (2/3) ... [2022-11-18 20:25:37,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162c1684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:37, skipping insertion in model container [2022-11-18 20:25:37,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:37" (3/3) ... [2022-11-18 20:25:37,761 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-11-18 20:25:37,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:25:37,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 20:25:37,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:25:37,991 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:25:38,068 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:25:38,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 284 places, 301 transitions, 618 flow [2022-11-18 20:25:38,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 284 places, 301 transitions, 618 flow [2022-11-18 20:25:38,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 301 transitions, 618 flow [2022-11-18 20:25:38,294 INFO L130 PetriNetUnfolder]: 24/299 cut-off events. [2022-11-18 20:25:38,294 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:25:38,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 299 events. 24/299 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 689 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 195. Up to 2 conditions per place. [2022-11-18 20:25:38,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 10684 [2022-11-18 20:27:16,069 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 262 DAG size of output: 228 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 20:27:36,160 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 296 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-18 20:27:46,527 INFO L134 LiptonReduction]: Checked pairs total: 10040 [2022-11-18 20:27:46,527 INFO L136 LiptonReduction]: Total number of compositions: 362 [2022-11-18 20:27:46,538 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 51 transitions, 118 flow [2022-11-18 20:27:46,613 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 534 states, 314 states have (on average 4.375796178343949) internal successors, (1374), 533 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:46,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:27:46,654 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;@6ef737c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:27:46,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-11-18 20:27:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 534 states, 314 states have (on average 4.375796178343949) internal successors, (1374), 533 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:27:46,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:46,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:27:46,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:46,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash 40788, now seen corresponding path program 1 times [2022-11-18 20:27:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:46,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013890556] [2022-11-18 20:27:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:46,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:46,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:46,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 20:27:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:46,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:27:46,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:46,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:46,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:46,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013890556] [2022-11-18 20:27:46,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013890556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:46,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:46,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:27:46,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418120666] [2022-11-18 20:27:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:46,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:47,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:47,031 INFO L87 Difference]: Start difference. First operand has 534 states, 314 states have (on average 4.375796178343949) internal successors, (1374), 533 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:47,847 INFO L93 Difference]: Finished difference Result 440 states and 1124 transitions. [2022-11-18 20:27:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 20:27:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:47,883 INFO L225 Difference]: With dead ends: 440 [2022-11-18 20:27:47,888 INFO L226 Difference]: Without dead ends: 440 [2022-11-18 20:27:47,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:47,893 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:47,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:27:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-18 20:27:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 438. [2022-11-18 20:27:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 263 states have (on average 4.273764258555133) internal successors, (1124), 437 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1124 transitions. [2022-11-18 20:27:48,006 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1124 transitions. Word has length 2 [2022-11-18 20:27:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:48,006 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 1124 transitions. [2022-11-18 20:27:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1124 transitions. [2022-11-18 20:27:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:27:48,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:48,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:27:48,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:48,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:48,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 40580, now seen corresponding path program 1 times [2022-11-18 20:27:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892134499] [2022-11-18 20:27:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:48,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:48,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:48,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:48,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 20:27:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:48,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:27:48,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:48,519 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 20:27:48,521 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-18 20:27:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:48,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:48,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:48,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892134499] [2022-11-18 20:27:48,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892134499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:48,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:48,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:27:48,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515454873] [2022-11-18 20:27:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:48,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:48,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:48,548 INFO L87 Difference]: Start difference. First operand 438 states and 1124 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:49,260 INFO L93 Difference]: Finished difference Result 437 states and 1122 transitions. [2022-11-18 20:27:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 20:27:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:49,265 INFO L225 Difference]: With dead ends: 437 [2022-11-18 20:27:49,266 INFO L226 Difference]: Without dead ends: 437 [2022-11-18 20:27:49,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:49,268 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:49,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:27:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-18 20:27:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-11-18 20:27:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 263 states have (on average 4.266159695817491) internal successors, (1122), 436 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1122 transitions. [2022-11-18 20:27:49,300 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1122 transitions. Word has length 2 [2022-11-18 20:27:49,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:49,301 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 1122 transitions. [2022-11-18 20:27:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1122 transitions. [2022-11-18 20:27:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 20:27:49,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:49,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 20:27:49,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:49,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 40581, now seen corresponding path program 1 times [2022-11-18 20:27:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:49,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572651322] [2022-11-18 20:27:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:49,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:49,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 20:27:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:27:49,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:49,710 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:27:49,711 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:27:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:49,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:49,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:49,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572651322] [2022-11-18 20:27:49,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572651322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:49,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:49,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:27:49,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673921279] [2022-11-18 20:27:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:49,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:49,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:49,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:49,776 INFO L87 Difference]: Start difference. First operand 437 states and 1122 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:50,567 INFO L93 Difference]: Finished difference Result 437 states and 1121 transitions. [2022-11-18 20:27:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-18 20:27:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:50,571 INFO L225 Difference]: With dead ends: 437 [2022-11-18 20:27:50,572 INFO L226 Difference]: Without dead ends: 437 [2022-11-18 20:27:50,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:50,573 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:50,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 39 Unchecked, 0.8s Time] [2022-11-18 20:27:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-18 20:27:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-11-18 20:27:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 263 states have (on average 4.262357414448669) internal successors, (1121), 436 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:50,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1121 transitions. [2022-11-18 20:27:50,647 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1121 transitions. Word has length 2 [2022-11-18 20:27:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:50,648 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 1121 transitions. [2022-11-18 20:27:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1121 transitions. [2022-11-18 20:27:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:27:50,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:50,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:27:50,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:50,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:50,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1264265, now seen corresponding path program 1 times [2022-11-18 20:27:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:50,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767187076] [2022-11-18 20:27:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:50,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:50,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:50,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:50,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 20:27:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:50,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:27:50,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:51,014 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-18 20:27:51,015 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-11-18 20:27:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:27:51,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:51,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767187076] [2022-11-18 20:27:51,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767187076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:51,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:51,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:27:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605836375] [2022-11-18 20:27:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:51,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:51,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:51,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:51,086 INFO L87 Difference]: Start difference. First operand 437 states and 1121 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) [2022-11-18 20:27:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:51,715 INFO L93 Difference]: Finished difference Result 436 states and 1120 transitions. [2022-11-18 20:27:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:51,717 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 [2022-11-18 20:27:51,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:51,721 INFO L225 Difference]: With dead ends: 436 [2022-11-18 20:27:51,721 INFO L226 Difference]: Without dead ends: 436 [2022-11-18 20:27:51,721 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 [2022-11-18 20:27:51,723 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 38 Unchecked, 0.6s Time] [2022-11-18 20:27:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-11-18 20:27:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-11-18 20:27:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 263 states have (on average 4.258555133079848) internal successors, (1120), 435 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1120 transitions. [2022-11-18 20:27:51,752 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1120 transitions. Word has length 3 [2022-11-18 20:27:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:51,754 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 1120 transitions. [2022-11-18 20:27:51,755 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) [2022-11-18 20:27:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1120 transitions. [2022-11-18 20:27:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:27:51,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:51,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:27:51,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-18 20:27:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:51,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1264266, now seen corresponding path program 1 times [2022-11-18 20:27:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666035947] [2022-11-18 20:27:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:51,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:51,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:51,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 20:27:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:52,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:27:52,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:27:52,202 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-18 20:27:52,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-18 20:27:52,216 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 10 treesize of output 8 [2022-11-18 20:27:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:52,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:52,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666035947] [2022-11-18 20:27:52,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666035947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:27:52,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:27:52,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:27:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398389582] [2022-11-18 20:27:52,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:52,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:27:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:27:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:27:52,695 INFO L87 Difference]: Start difference. First operand 436 states and 1120 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:54,967 INFO L93 Difference]: Finished difference Result 438 states and 1126 transitions. [2022-11-18 20:27:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:27:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:27:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:54,972 INFO L225 Difference]: With dead ends: 438 [2022-11-18 20:27:54,972 INFO L226 Difference]: Without dead ends: 438 [2022-11-18 20:27:54,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:27:54,974 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:54,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 14 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 87 Unchecked, 2.0s Time] [2022-11-18 20:27:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-18 20:27:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-11-18 20:27:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 265 states have (on average 4.249056603773585) internal successors, (1126), 437 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1126 transitions. [2022-11-18 20:27:54,993 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1126 transitions. Word has length 3 [2022-11-18 20:27:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:54,993 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 1126 transitions. [2022-11-18 20:27:54,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1126 transitions. [2022-11-18 20:27:54,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:27:54,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:54,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:27:55,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:55,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1264058, now seen corresponding path program 1 times [2022-11-18 20:27:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:55,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40367544] [2022-11-18 20:27:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:55,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:55,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:55,212 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 20:27:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:55,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:27:55,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:55,421 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:27:55,421 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:27:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:55,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:55,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:55,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40367544] [2022-11-18 20:27:55,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40367544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:27:55,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:27:55,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 20:27:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598140677] [2022-11-18 20:27:55,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:55,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:27:55,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:55,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:27:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:27:55,874 INFO L87 Difference]: Start difference. First operand 438 states and 1126 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:57,412 INFO L93 Difference]: Finished difference Result 870 states and 2241 transitions. [2022-11-18 20:27:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:27:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-18 20:27:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:57,420 INFO L225 Difference]: With dead ends: 870 [2022-11-18 20:27:57,420 INFO L226 Difference]: Without dead ends: 870 [2022-11-18 20:27:57,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:27:57,422 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 150 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:57,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 6 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:27:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-18 20:27:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 439. [2022-11-18 20:27:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 266 states have (on average 4.2368421052631575) internal successors, (1127), 438 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1127 transitions. [2022-11-18 20:27:57,445 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 1127 transitions. Word has length 3 [2022-11-18 20:27:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:57,446 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 1127 transitions. [2022-11-18 20:27:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 1127 transitions. [2022-11-18 20:27:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:27:57,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:57,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:27:57,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:57,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:57,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989030, now seen corresponding path program 1 times [2022-11-18 20:27:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:57,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288963745] [2022-11-18 20:27:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:57,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:57,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:57,665 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:57,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 20:27:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:57,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:27:57,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:57,842 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-11-18 20:27:57,842 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 2 case distinctions, treesize of input 12 treesize of output 22 [2022-11-18 20:27:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:27:57,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:27:57,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288963745] [2022-11-18 20:27:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288963745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:27:57,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:27:57,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:27:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111353555] [2022-11-18 20:27:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:27:57,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:27:57,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:27:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:27:57,877 INFO L87 Difference]: Start difference. First operand 439 states and 1127 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) [2022-11-18 20:27:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:27:58,614 INFO L93 Difference]: Finished difference Result 417 states and 1083 transitions. [2022-11-18 20:27:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:27:58,614 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 [2022-11-18 20:27:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:27:58,617 INFO L225 Difference]: With dead ends: 417 [2022-11-18 20:27:58,617 INFO L226 Difference]: Without dead ends: 417 [2022-11-18 20:27:58,618 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 [2022-11-18 20:27:58,619 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:27:58,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:27:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-18 20:27:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2022-11-18 20:27:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 262 states have (on average 4.133587786259542) internal successors, (1083), 416 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:27:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1083 transitions. [2022-11-18 20:27:58,642 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1083 transitions. Word has length 5 [2022-11-18 20:27:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:27:58,643 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 1083 transitions. [2022-11-18 20:27:58,643 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) [2022-11-18 20:27:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1083 transitions. [2022-11-18 20:27:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:27:58,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:27:58,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:27:58,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:27:58,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:58,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:27:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:27:58,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1214989031, now seen corresponding path program 1 times [2022-11-18 20:27:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:27:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041446305] [2022-11-18 20:27:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:27:58,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:27:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:27:58,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:27:58,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 20:27:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:27:58,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:27:58,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:27:59,090 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:27:59,090 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:27:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:59,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:27:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:27:59,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:27:59,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041446305] [2022-11-18 20:27:59,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041446305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:27:59,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:27:59,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:27:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611971757] [2022-11-18 20:27:59,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:27:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:27:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:27:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:27:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:27:59,777 INFO L87 Difference]: Start difference. First operand 417 states and 1083 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) [2022-11-18 20:28:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:01,649 INFO L93 Difference]: Finished difference Result 423 states and 1099 transitions. [2022-11-18 20:28:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:28:01,650 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 [2022-11-18 20:28:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:01,656 INFO L225 Difference]: With dead ends: 423 [2022-11-18 20:28:01,657 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 20:28:01,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:01,660 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 22 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:01,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 16 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 94 Unchecked, 1.8s Time] [2022-11-18 20:28:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 20:28:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2022-11-18 20:28:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 265 states have (on average 4.1169811320754715) internal successors, (1091), 419 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1091 transitions. [2022-11-18 20:28:01,678 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1091 transitions. Word has length 5 [2022-11-18 20:28:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:01,679 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 1091 transitions. [2022-11-18 20:28:01,679 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) [2022-11-18 20:28:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1091 transitions. [2022-11-18 20:28:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:28:01,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:01,680 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 20:28:01,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:01,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:01,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1214953450, now seen corresponding path program 2 times [2022-11-18 20:28:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:01,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102569876] [2022-11-18 20:28:01,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:01,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:01,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:01,898 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:01,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 20:28:01,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:28:01,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:01,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:28:01,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:28:02,100 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-18 20:28:02,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-18 20:28:02,115 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 10 treesize of output 8 [2022-11-18 20:28:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:28:02,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:02,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:02,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102569876] [2022-11-18 20:28:02,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102569876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:02,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:28:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546612185] [2022-11-18 20:28:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:02,283 INFO L87 Difference]: Start difference. First operand 420 states and 1091 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) [2022-11-18 20:28:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:02,935 INFO L93 Difference]: Finished difference Result 419 states and 1089 transitions. [2022-11-18 20:28:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:02,936 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 5 [2022-11-18 20:28:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:02,939 INFO L225 Difference]: With dead ends: 419 [2022-11-18 20:28:02,940 INFO L226 Difference]: Without dead ends: 419 [2022-11-18 20:28:02,940 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 [2022-11-18 20:28:02,941 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:02,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 35 Unchecked, 0.6s Time] [2022-11-18 20:28:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-18 20:28:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2022-11-18 20:28:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 265 states have (on average 4.109433962264151) internal successors, (1089), 418 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1089 transitions. [2022-11-18 20:28:02,972 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1089 transitions. Word has length 5 [2022-11-18 20:28:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:02,972 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 1089 transitions. [2022-11-18 20:28:02,973 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) [2022-11-18 20:28:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1089 transitions. [2022-11-18 20:28:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:28:02,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:02,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:28:02,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:03,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:03,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:03,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash -990057958, now seen corresponding path program 1 times [2022-11-18 20:28:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:03,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215710998] [2022-11-18 20:28:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:03,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:03,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:03,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 20:28:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:03,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:28:03,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:03,371 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-18 20:28:03,371 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-18 20:28:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:03,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:03,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:03,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215710998] [2022-11-18 20:28:03,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215710998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:03,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:03,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973738808] [2022-11-18 20:28:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:03,410 INFO L87 Difference]: Start difference. First operand 419 states and 1089 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:04,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:04,005 INFO L93 Difference]: Finished difference Result 253 states and 645 transitions. [2022-11-18 20:28:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:28:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:04,008 INFO L225 Difference]: With dead ends: 253 [2022-11-18 20:28:04,008 INFO L226 Difference]: Without dead ends: 253 [2022-11-18 20:28:04,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:28:04,009 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:28:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-18 20:28:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2022-11-18 20:28:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 180 states have (on average 3.5833333333333335) internal successors, (645), 252 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 645 transitions. [2022-11-18 20:28:04,019 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 645 transitions. Word has length 6 [2022-11-18 20:28:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:04,020 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 645 transitions. [2022-11-18 20:28:04,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 645 transitions. [2022-11-18 20:28:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:28:04,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:04,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:28:04,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:04,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:04,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash -990057957, now seen corresponding path program 1 times [2022-11-18 20:28:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:04,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446118055] [2022-11-18 20:28:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:04,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:04,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:04,238 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:04,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 20:28:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:04,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:28:04,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:04,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:04,700 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 35 treesize of output 31 [2022-11-18 20:28:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:04,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:04,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446118055] [2022-11-18 20:28:04,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446118055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:04,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:04,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:28:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427939410] [2022-11-18 20:28:04,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:04,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:04,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:04,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:04,818 INFO L87 Difference]: Start difference. First operand 253 states and 645 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-11-18 20:28:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:07,246 INFO L93 Difference]: Finished difference Result 583 states and 1478 transitions. [2022-11-18 20:28:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 [2022-11-18 20:28:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:07,250 INFO L225 Difference]: With dead ends: 583 [2022-11-18 20:28:07,251 INFO L226 Difference]: Without dead ends: 583 [2022-11-18 20:28:07,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:07,252 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 180 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:07,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 9 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:28:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-18 20:28:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 304. [2022-11-18 20:28:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 231 states have (on average 3.606060606060606) internal successors, (833), 303 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 833 transitions. [2022-11-18 20:28:07,265 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 833 transitions. Word has length 6 [2022-11-18 20:28:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:07,266 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 833 transitions. [2022-11-18 20:28:07,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-11-18 20:28:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 833 transitions. [2022-11-18 20:28:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:28:07,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:07,267 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-18 20:28:07,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:07,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:07,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -991149115, now seen corresponding path program 2 times [2022-11-18 20:28:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247834682] [2022-11-18 20:28:07,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:07,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:07,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:07,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:07,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 20:28:07,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:28:07,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:07,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:28:07,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:07,706 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:07,707 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:07,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:09,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:09,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247834682] [2022-11-18 20:28:09,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247834682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:09,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:09,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-18 20:28:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797661188] [2022-11-18 20:28:09,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:28:09,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:28:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:28:09,151 INFO L87 Difference]: Start difference. First operand 304 states and 833 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) [2022-11-18 20:28:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:18,745 INFO L93 Difference]: Finished difference Result 2655 states and 7357 transitions. [2022-11-18 20:28:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:28:18,747 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 [2022-11-18 20:28:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:18,773 INFO L225 Difference]: With dead ends: 2655 [2022-11-18 20:28:18,774 INFO L226 Difference]: Without dead ends: 2655 [2022-11-18 20:28:18,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:28:18,775 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 957 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:18,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 48 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-18 20:28:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-18 20:28:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 310. [2022-11-18 20:28:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 237 states have (on average 3.5654008438818567) internal successors, (845), 309 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 845 transitions. [2022-11-18 20:28:18,811 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 845 transitions. Word has length 6 [2022-11-18 20:28:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:18,811 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 845 transitions. [2022-11-18 20:28:18,812 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) [2022-11-18 20:28:18,812 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 845 transitions. [2022-11-18 20:28:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:18,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:18,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:18,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:19,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:19,038 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash -626619241, now seen corresponding path program 1 times [2022-11-18 20:28:19,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:19,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663976474] [2022-11-18 20:28:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:19,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:19,041 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:19,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 20:28:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:19,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:28:19,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:19,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:19,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:19,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663976474] [2022-11-18 20:28:19,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663976474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:19,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:19,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971284412] [2022-11-18 20:28:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:19,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:19,232 INFO L87 Difference]: Start difference. First operand 310 states and 845 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:28:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:19,737 INFO L93 Difference]: Finished difference Result 250 states and 653 transitions. [2022-11-18 20:28:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:19,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2022-11-18 20:28:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:19,739 INFO L225 Difference]: With dead ends: 250 [2022-11-18 20:28:19,739 INFO L226 Difference]: Without dead ends: 250 [2022-11-18 20:28:19,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:19,741 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:19,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-18 20:28:19,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-18 20:28:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 197 states have (on average 3.314720812182741) internal successors, (653), 249 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 653 transitions. [2022-11-18 20:28:19,755 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 653 transitions. Word has length 7 [2022-11-18 20:28:19,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:19,756 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 653 transitions. [2022-11-18 20:28:19,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:28:19,757 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 653 transitions. [2022-11-18 20:28:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:19,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:19,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:19,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-18 20:28:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:19,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -626619240, now seen corresponding path program 1 times [2022-11-18 20:28:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:19,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813349517] [2022-11-18 20:28:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:19,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:19,973 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:19,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 20:28:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:28:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:20,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:20,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813349517] [2022-11-18 20:28:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813349517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:20,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176526910] [2022-11-18 20:28:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:20,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:20,096 INFO L87 Difference]: Start difference. First operand 250 states and 653 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-11-18 20:28:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:20,583 INFO L93 Difference]: Finished difference Result 190 states and 461 transitions. [2022-11-18 20:28:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-11-18 20:28:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:20,586 INFO L225 Difference]: With dead ends: 190 [2022-11-18 20:28:20,586 INFO L226 Difference]: Without dead ends: 190 [2022-11-18 20:28:20,586 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 [2022-11-18 20:28:20,587 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:20,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:28:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-18 20:28:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-18 20:28:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 157 states have (on average 2.9363057324840764) internal successors, (461), 189 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 461 transitions. [2022-11-18 20:28:20,594 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 461 transitions. Word has length 7 [2022-11-18 20:28:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:20,595 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 461 transitions. [2022-11-18 20:28:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-11-18 20:28:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 461 transitions. [2022-11-18 20:28:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:20,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:20,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:20,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:20,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:20,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:20,810 INFO L85 PathProgramCache]: Analyzing trace with hash -627023961, now seen corresponding path program 1 times [2022-11-18 20:28:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:20,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649872252] [2022-11-18 20:28:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:20,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:20,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:20,812 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:20,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 20:28:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:20,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:28:20,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:21,086 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:21,086 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:21,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:28:22,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:22,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649872252] [2022-11-18 20:28:22,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649872252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:22,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:22,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:28:22,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483781243] [2022-11-18 20:28:22,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:22,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:22,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:22,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:22,257 INFO L87 Difference]: Start difference. First operand 190 states and 461 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:25,815 INFO L93 Difference]: Finished difference Result 279 states and 772 transitions. [2022-11-18 20:28:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:25,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2022-11-18 20:28:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:25,818 INFO L225 Difference]: With dead ends: 279 [2022-11-18 20:28:25,818 INFO L226 Difference]: Without dead ends: 279 [2022-11-18 20:28:25,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:28:25,819 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 94 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:25,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 12 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 138 Unchecked, 1.0s Time] [2022-11-18 20:28:25,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-18 20:28:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 237. [2022-11-18 20:28:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 204 states have (on average 3.1862745098039214) internal successors, (650), 236 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 650 transitions. [2022-11-18 20:28:25,828 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 650 transitions. Word has length 7 [2022-11-18 20:28:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:25,829 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 650 transitions. [2022-11-18 20:28:25,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 650 transitions. [2022-11-18 20:28:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:25,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:25,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:25,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:26,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash -627023997, now seen corresponding path program 1 times [2022-11-18 20:28:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:26,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667485458] [2022-11-18 20:28:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:26,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:26,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 20:28:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:26,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:26,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:26,294 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:26,295 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:26,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:27,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667485458] [2022-11-18 20:28:27,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667485458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:27,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:27,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:28:27,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769344741] [2022-11-18 20:28:27,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:27,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:27,074 INFO L87 Difference]: Start difference. First operand 237 states and 650 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:28,759 INFO L93 Difference]: Finished difference Result 236 states and 646 transitions. [2022-11-18 20:28:28,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2022-11-18 20:28:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:28,762 INFO L225 Difference]: With dead ends: 236 [2022-11-18 20:28:28,763 INFO L226 Difference]: Without dead ends: 236 [2022-11-18 20:28:28,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:28,763 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 46 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:28,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 13 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 51 Unchecked, 1.6s Time] [2022-11-18 20:28:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-18 20:28:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2022-11-18 20:28:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 202 states have (on average 3.1831683168316833) internal successors, (643), 234 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 643 transitions. [2022-11-18 20:28:28,771 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 643 transitions. Word has length 7 [2022-11-18 20:28:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:28,771 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 643 transitions. [2022-11-18 20:28:28,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 643 transitions. [2022-11-18 20:28:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:28,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:28,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:28,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:28,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:28,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:28,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -627026880, now seen corresponding path program 1 times [2022-11-18 20:28:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:28,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383768570] [2022-11-18 20:28:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:28,986 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 [2022-11-18 20:28:28,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:28,987 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:28,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 20:28:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:28:29,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:29,239 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:29,239 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:29,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:30,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383768570] [2022-11-18 20:28:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383768570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:30,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:30,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-18 20:28:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759770289] [2022-11-18 20:28:30,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:28:30,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:28:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:28:30,032 INFO L87 Difference]: Start difference. First operand 235 states and 643 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:31,709 INFO L93 Difference]: Finished difference Result 238 states and 648 transitions. [2022-11-18 20:28:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:28:31,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 [2022-11-18 20:28:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:31,711 INFO L225 Difference]: With dead ends: 238 [2022-11-18 20:28:31,712 INFO L226 Difference]: Without dead ends: 238 [2022-11-18 20:28:31,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:28:31,713 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:31,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 69 Unchecked, 1.6s Time] [2022-11-18 20:28:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-18 20:28:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-11-18 20:28:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 205 states have (on average 3.1609756097560977) internal successors, (648), 237 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 648 transitions. [2022-11-18 20:28:31,722 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 648 transitions. Word has length 7 [2022-11-18 20:28:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 648 transitions. [2022-11-18 20:28:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 648 transitions. [2022-11-18 20:28:31,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 20:28:31,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:31,724 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 20:28:31,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:31,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:31,937 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -660809657, now seen corresponding path program 2 times [2022-11-18 20:28:31,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:31,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448680446] [2022-11-18 20:28:31,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:31,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:31,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:31,940 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:31,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 20:28:32,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:28:32,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:32,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:28:32,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:32,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:28:32,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:28:32,112 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:28:32,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-11-18 20:28:32,120 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 14 treesize of output 12 [2022-11-18 20:28:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:28:32,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:32,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:32,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448680446] [2022-11-18 20:28:32,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448680446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:32,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:32,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:28:32,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260630547] [2022-11-18 20:28:32,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:32,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:28:32,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:28:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:28:32,184 INFO L87 Difference]: Start difference. First operand 238 states and 648 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) [2022-11-18 20:28:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:32,617 INFO L93 Difference]: Finished difference Result 219 states and 607 transitions. [2022-11-18 20:28:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:28:32,617 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 7 [2022-11-18 20:28:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:32,619 INFO L225 Difference]: With dead ends: 219 [2022-11-18 20:28:32,619 INFO L226 Difference]: Without dead ends: 219 [2022-11-18 20:28:32,619 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 [2022-11-18 20:28:32,620 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:32,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:28:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-18 20:28:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 216. [2022-11-18 20:28:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 195 states have (on average 3.0871794871794873) internal successors, (602), 215 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 602 transitions. [2022-11-18 20:28:32,626 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 602 transitions. Word has length 7 [2022-11-18 20:28:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:32,627 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 602 transitions. [2022-11-18 20:28:32,627 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) [2022-11-18 20:28:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 602 transitions. [2022-11-18 20:28:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:28:32,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:32,628 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:32,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:32,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:32,841 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1643877715, now seen corresponding path program 1 times [2022-11-18 20:28:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234303221] [2022-11-18 20:28:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:28:32,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:32,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:32,843 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:32,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 20:28:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:28:32,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:28:33,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:33,129 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:33,130 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:33,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:36,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:36,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234303221] [2022-11-18 20:28:36,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234303221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:36,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:36,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 20:28:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839140211] [2022-11-18 20:28:36,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:36,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:28:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:28:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:28:36,133 INFO L87 Difference]: Start difference. First operand 216 states and 602 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2022-11-18 20:28:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:39,998 INFO L93 Difference]: Finished difference Result 235 states and 679 transitions. [2022-11-18 20:28:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:28:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 [2022-11-18 20:28:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:40,000 INFO L225 Difference]: With dead ends: 235 [2022-11-18 20:28:40,001 INFO L226 Difference]: Without dead ends: 235 [2022-11-18 20:28:40,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:28:40,002 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:40,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 26 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 104 Unchecked, 0.8s Time] [2022-11-18 20:28:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-18 20:28:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 227. [2022-11-18 20:28:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 206 states have (on average 3.174757281553398) internal successors, (654), 226 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 654 transitions. [2022-11-18 20:28:40,009 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 654 transitions. Word has length 9 [2022-11-18 20:28:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:40,010 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 654 transitions. [2022-11-18 20:28:40,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2022-11-18 20:28:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 654 transitions. [2022-11-18 20:28:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 20:28:40,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:40,011 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 20:28:40,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:40,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:40,225 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash 616701191, now seen corresponding path program 2 times [2022-11-18 20:28:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:40,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245863407] [2022-11-18 20:28:40,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:28:40,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:40,228 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 20:28:40,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:28:40,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:40,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:28:40,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:40,462 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:40,462 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:28:40,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:28:40,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245863407] [2022-11-18 20:28:40,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245863407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:28:40,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:28:40,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:28:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989375285] [2022-11-18 20:28:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:28:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:28:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:28:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:28:40,698 INFO L87 Difference]: Start difference. First operand 227 states and 654 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:28:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:28:41,344 INFO L93 Difference]: Finished difference Result 111 states and 286 transitions. [2022-11-18 20:28:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:28:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 9 [2022-11-18 20:28:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:28:41,346 INFO L225 Difference]: With dead ends: 111 [2022-11-18 20:28:41,346 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 20:28:41,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:28:41,347 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:28:41,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:28:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 20:28:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 46. [2022-11-18 20:28:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.159090909090909) internal successors, (95), 45 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:28:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2022-11-18 20:28:41,350 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 9 [2022-11-18 20:28:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:28:41,351 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2022-11-18 20:28:41,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-18 20:28:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2022-11-18 20:28:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:28:41,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:28:41,352 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-18 20:28:41,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:28:41,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:41,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:28:41,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:28:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 22548389, now seen corresponding path program 3 times [2022-11-18 20:28:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:28:41,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692872825] [2022-11-18 20:28:41,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:28:41,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:28:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:28:41,558 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:28:41,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 20:28:41,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:28:41,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:28:41,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:28:41,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:28:42,000 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:28:42,001 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:28:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:42,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:28:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:28:47,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:28:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692872825] [2022-11-18 20:28:47,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692872825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:28:47,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:28:47,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-18 20:28:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054666036] [2022-11-18 20:28:47,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:28:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:28:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:28:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:28:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:28:47,255 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:18,088 INFO L93 Difference]: Finished difference Result 718 states and 1559 transitions. [2022-11-18 20:29:18,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:29:18,089 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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 12 [2022-11-18 20:29:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:18,091 INFO L225 Difference]: With dead ends: 718 [2022-11-18 20:29:18,091 INFO L226 Difference]: Without dead ends: 718 [2022-11-18 20:29:18,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:29:18,092 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1890 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:18,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 240 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-18 20:29:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-18 20:29:18,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 58. [2022-11-18 20:29:18,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 2.125) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 119 transitions. [2022-11-18 20:29:18,099 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 119 transitions. Word has length 12 [2022-11-18 20:29:18,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:18,100 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 119 transitions. [2022-11-18 20:29:18,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 119 transitions. [2022-11-18 20:29:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:18,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:18,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:18,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:18,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1681479297, now seen corresponding path program 1 times [2022-11-18 20:29:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493515199] [2022-11-18 20:29:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:18,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:18,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:18,318 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:18,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 20:29:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:18,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:18,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:18,998 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:29:18,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 281 treesize of output 259 [2022-11-18 20:29:19,030 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 221 treesize of output 215 [2022-11-18 20:29:19,505 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-11-18 20:29:19,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 293 treesize of output 223 [2022-11-18 20:29:19,517 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 223 treesize of output 219 [2022-11-18 20:29:19,528 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 219 treesize of output 215 [2022-11-18 20:29:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:19,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:19,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:19,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493515199] [2022-11-18 20:29:19,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493515199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:19,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:19,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267619194] [2022-11-18 20:29:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:19,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:19,593 INFO L87 Difference]: Start difference. First operand 58 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:20,161 INFO L93 Difference]: Finished difference Result 78 states and 162 transitions. [2022-11-18 20:29:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:20,163 INFO L225 Difference]: With dead ends: 78 [2022-11-18 20:29:20,163 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 20:29:20,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:20,164 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:20,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:20,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 20:29:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2022-11-18 20:29:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 2.129032258064516) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 132 transitions. [2022-11-18 20:29:20,168 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 132 transitions. Word has length 15 [2022-11-18 20:29:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:20,168 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 132 transitions. [2022-11-18 20:29:20,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 132 transitions. [2022-11-18 20:29:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:20,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:20,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:20,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-18 20:29:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:20,380 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1638896423, now seen corresponding path program 2 times [2022-11-18 20:29:20,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:20,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878813075] [2022-11-18 20:29:20,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:29:20,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:20,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:20,383 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:20,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 20:29:20,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:29:20,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:20,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:20,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:20,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:20,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878813075] [2022-11-18 20:29:20,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878813075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:20,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:20,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:20,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568382293] [2022-11-18 20:29:20,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:20,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:20,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:20,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:20,905 INFO L87 Difference]: Start difference. First operand 64 states and 132 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:21,494 INFO L93 Difference]: Finished difference Result 76 states and 168 transitions. [2022-11-18 20:29:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:21,496 INFO L225 Difference]: With dead ends: 76 [2022-11-18 20:29:21,496 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 20:29:21,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:29:21,497 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:21,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 20:29:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-11-18 20:29:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 2.176470588235294) internal successors, (148), 69 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 148 transitions. [2022-11-18 20:29:21,500 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 148 transitions. Word has length 15 [2022-11-18 20:29:21,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:21,501 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 148 transitions. [2022-11-18 20:29:21,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 148 transitions. [2022-11-18 20:29:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:21,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:21,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:21,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:21,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:21,714 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1818835237, now seen corresponding path program 3 times [2022-11-18 20:29:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:21,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436659290] [2022-11-18 20:29:21,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:29:21,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:21,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:21,717 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:21,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 20:29:21,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-18 20:29:21,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:21,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:22,492 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:29:22,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 281 treesize of output 259 [2022-11-18 20:29:22,523 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 221 treesize of output 215 [2022-11-18 20:29:22,993 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-11-18 20:29:22,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 293 treesize of output 223 [2022-11-18 20:29:23,009 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 223 treesize of output 219 [2022-11-18 20:29:23,023 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 219 treesize of output 215 [2022-11-18 20:29:23,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:23,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:23,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:23,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436659290] [2022-11-18 20:29:23,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436659290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:23,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:23,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810236713] [2022-11-18 20:29:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:23,093 INFO L87 Difference]: Start difference. First operand 70 states and 148 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:23,573 INFO L93 Difference]: Finished difference Result 78 states and 171 transitions. [2022-11-18 20:29:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:23,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:23,575 INFO L225 Difference]: With dead ends: 78 [2022-11-18 20:29:23,575 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 20:29:23,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:23,576 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:23,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:29:23,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 20:29:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2022-11-18 20:29:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 2.176470588235294) internal successors, (148), 69 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 148 transitions. [2022-11-18 20:29:23,579 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 148 transitions. Word has length 15 [2022-11-18 20:29:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:23,579 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 148 transitions. [2022-11-18 20:29:23,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 148 transitions. [2022-11-18 20:29:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:23,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:23,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:23,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:23,793 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1813142883, now seen corresponding path program 4 times [2022-11-18 20:29:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:23,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289746890] [2022-11-18 20:29:23,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:29:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:23,797 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:23,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 20:29:23,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:29:23,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:23,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:23,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:24,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:24,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:24,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289746890] [2022-11-18 20:29:24,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289746890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:24,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:24,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585634176] [2022-11-18 20:29:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:24,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:24,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:24,265 INFO L87 Difference]: Start difference. First operand 70 states and 148 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:24,889 INFO L93 Difference]: Finished difference Result 104 states and 227 transitions. [2022-11-18 20:29:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:24,891 INFO L225 Difference]: With dead ends: 104 [2022-11-18 20:29:24,891 INFO L226 Difference]: Without dead ends: 104 [2022-11-18 20:29:24,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:29:24,891 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:24,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:29:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-18 20:29:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2022-11-18 20:29:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 2.2972972972972974) internal successors, (170), 75 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 170 transitions. [2022-11-18 20:29:24,895 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 170 transitions. Word has length 15 [2022-11-18 20:29:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:24,895 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 170 transitions. [2022-11-18 20:29:24,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 170 transitions. [2022-11-18 20:29:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:24,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:24,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:24,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:25,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:25,115 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:25,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:25,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1633204069, now seen corresponding path program 5 times [2022-11-18 20:29:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878761951] [2022-11-18 20:29:25,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:29:25,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:25,117 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:25,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 20:29:25,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:29:25,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:25,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:25,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:25,815 INFO L321 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2022-11-18 20:29:25,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 281 treesize of output 259 [2022-11-18 20:29:25,839 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 221 treesize of output 215 [2022-11-18 20:29:26,218 INFO L321 Elim1Store]: treesize reduction 216, result has 0.5 percent of original size [2022-11-18 20:29:26,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 293 treesize of output 223 [2022-11-18 20:29:26,231 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 223 treesize of output 219 [2022-11-18 20:29:26,245 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 219 treesize of output 215 [2022-11-18 20:29:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:26,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:26,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878761951] [2022-11-18 20:29:26,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878761951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:26,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:26,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:26,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438876476] [2022-11-18 20:29:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:26,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:26,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:26,309 INFO L87 Difference]: Start difference. First operand 76 states and 170 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:26,843 INFO L93 Difference]: Finished difference Result 112 states and 235 transitions. [2022-11-18 20:29:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:26,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:26,845 INFO L225 Difference]: With dead ends: 112 [2022-11-18 20:29:26,845 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 20:29:26,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:26,846 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:26,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:29:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 20:29:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-11-18 20:29:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 2.236111111111111) internal successors, (161), 73 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:26,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 161 transitions. [2022-11-18 20:29:26,850 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 161 transitions. Word has length 15 [2022-11-18 20:29:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:26,851 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 161 transitions. [2022-11-18 20:29:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 161 transitions. [2022-11-18 20:29:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:29:26,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:26,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:26,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:27,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:27,055 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:27,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:27,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1578946079, now seen corresponding path program 6 times [2022-11-18 20:29:27,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:27,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471453296] [2022-11-18 20:29:27,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:29:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:27,057 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:27,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 20:29:27,214 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-11-18 20:29:27,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:29:27,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:29:27,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:29:27,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:29:27,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:29:27,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471453296] [2022-11-18 20:29:27,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471453296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:29:27,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:29:27,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:29:27,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825089398] [2022-11-18 20:29:27,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:29:27,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:29:27,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:29:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:29:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:29:27,470 INFO L87 Difference]: Start difference. First operand 74 states and 161 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:28,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:29:28,194 INFO L93 Difference]: Finished difference Result 98 states and 207 transitions. [2022-11-18 20:29:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:29:28,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-18 20:29:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:29:28,196 INFO L225 Difference]: With dead ends: 98 [2022-11-18 20:29:28,196 INFO L226 Difference]: Without dead ends: 98 [2022-11-18 20:29:28,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:29:28,197 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:29:28,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:29:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-18 20:29:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2022-11-18 20:29:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.1794871794871793) internal successors, (170), 79 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 170 transitions. [2022-11-18 20:29:28,200 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 170 transitions. Word has length 15 [2022-11-18 20:29:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:29:28,200 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 170 transitions. [2022-11-18 20:29:28,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:29:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 170 transitions. [2022-11-18 20:29:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:29:28,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:29:28,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:29:28,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:29:28,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:28,407 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2022-11-18 20:29:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:29:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2029652117, now seen corresponding path program 1 times [2022-11-18 20:29:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:29:28,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728227174] [2022-11-18 20:29:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:29:28,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:29:28,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:29:28,409 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:29:28,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98b88e8f-1e5f-4502-9752-71e9d604de1a/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 20:29:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:29:28,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:29:28,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:29:28,811 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-18 20:29:28,811 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-18 20:29:29,598 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 793 treesize of output 779 [2022-11-18 20:29:29,616 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 786 treesize of output 778 [2022-11-18 20:29:35,531 INFO L321 Elim1Store]: treesize reduction 885, result has 3.1 percent of original size [2022-11-18 20:29:35,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 6 disjoint index pairs (out of 120 index pairs), introduced 28 new quantified variables, introduced 120 case distinctions, treesize of input 2531 treesize of output 250 [2022-11-18 20:29:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:29:35,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:29:57,775 WARN L233 SmtUtils]: Spent 13.10s on a formula simplification. DAG size of input: 884 DAG size of output: 233 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:29:57,776 INFO L321 Elim1Store]: treesize reduction 2520, result has 22.2 percent of original size [2022-11-18 20:29:57,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 24 select indices, 24 select index equivalence classes, 0 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 276 case distinctions, treesize of input 967 treesize of output 1442 [2022-11-18 20:29:57,850 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 713 treesize of output 705