./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-6b4ec56 [2022-11-20 11:23:30,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:23:30,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:23:30,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:23:30,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:23:30,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:23:30,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:23:30,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:23:30,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:23:30,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:23:30,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:23:30,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:23:30,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:23:30,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:23:30,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:23:30,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:23:30,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:23:30,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:23:30,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:23:30,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:23:30,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:23:30,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:23:30,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:23:30,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:23:30,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:23:30,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:23:30,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:23:30,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:23:30,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:23:30,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:23:30,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:23:30,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:23:30,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:23:30,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:23:30,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:23:30,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:23:30,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:23:30,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:23:30,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:23:30,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:23:30,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:23:30,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:23:30,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:23:30,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:23:30,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:23:30,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:23:30,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:23:30,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:23:30,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:23:30,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:23:30,327 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:23:30,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:23:30,329 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:23:30,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:23:30,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:23:30,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:23:30,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:23:30,331 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:23:30,331 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:23:30,332 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:23:30,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:23:30,332 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:23:30,333 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:23:30,333 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:23:30,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:23:30,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:23:30,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:23:30,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:30,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:23:30,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:23:30,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:23:30,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:23:30,336 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_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-20 11:23:30,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:23:30,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:23:30,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:23:30,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:23:30,762 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:23:30,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:23:34,615 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:23:34,934 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:23:34,936 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:23:34,951 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/3ae101caf/f096e368da6e4c97988bf76305ee39e1/FLAGb48fbc783 [2022-11-20 11:23:34,986 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/3ae101caf/f096e368da6e4c97988bf76305ee39e1 [2022-11-20 11:23:34,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:23:34,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:23:35,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:35,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:23:35,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:23:35,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:34" (1/1) ... [2022-11-20 11:23:35,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274fe0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:35, skipping insertion in model container [2022-11-20 11:23:35,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:34" (1/1) ... [2022-11-20 11:23:35,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:23:35,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:35,533 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:23:35,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:35,582 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) [2022-11-20 11:23:35,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1529c453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:35, skipping insertion in model container [2022-11-20 11:23:35,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:35,585 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:23:35,588 INFO L158 Benchmark]: Toolchain (without parser) took 593.20ms. Allocated memory is still 155.2MB. Free memory was 116.2MB in the beginning and 123.4MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:23:35,589 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:23:35,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 584.32ms. Allocated memory is still 155.2MB. Free memory was 116.2MB in the beginning and 123.4MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:23:35,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 121.6MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 584.32ms. Allocated memory is still 155.2MB. Free memory was 116.2MB in the beginning and 123.4MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 195]: 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_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-6b4ec56 [2022-11-20 11:23:38,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:23:38,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:23:38,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:23:38,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:23:38,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:23:38,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:23:38,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:23:38,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:23:38,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:23:38,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:23:38,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:23:38,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:23:38,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:23:38,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:23:38,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:23:38,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:23:38,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:23:38,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:23:38,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:23:38,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:23:38,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:23:38,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:23:38,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:23:38,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:23:38,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:23:38,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:23:38,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:23:38,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:23:38,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:23:38,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:23:38,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:23:38,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:23:38,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:23:38,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:23:38,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:23:38,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:23:38,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:23:38,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:23:38,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:23:38,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:23:38,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:23:38,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:23:38,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:23:38,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:23:38,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:23:38,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:23:38,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:23:38,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:23:38,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:23:38,757 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:23:38,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:23:38,759 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:23:38,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:23:38,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:23:38,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:23:38,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:23:38,761 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:23:38,761 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:23:38,761 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:23:38,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:23:38,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:23:38,762 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:23:38,763 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:23:38,763 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:23:38,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:23:38,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:23:38,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:23:38,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:23:38,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:38,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:23:38,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:23:38,766 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:23:38,766 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:23:38,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:23:38,767 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_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-20 11:23:39,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:23:39,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:23:39,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:23:39,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:23:39,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:23:39,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:23:43,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:23:43,584 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:23:43,585 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-20 11:23:43,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/ecb9b3625/31c76da0881f4b69a196815a6732a701/FLAG723424c1f [2022-11-20 11:23:43,619 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/data/ecb9b3625/31c76da0881f4b69a196815a6732a701 [2022-11-20 11:23:43,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:23:43,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:23:43,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:43,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:23:43,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:23:43,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:43" (1/1) ... [2022-11-20 11:23:43,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ca408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:43, skipping insertion in model container [2022-11-20 11:23:43,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:23:43" (1/1) ... [2022-11-20 11:23:43,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:23:43,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:44,058 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:23:44,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:44,114 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:23:44,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:23:44,190 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:23:44,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:44,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:23:44,290 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-20 11:23:44,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:23:44,339 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:23:44,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44 WrapperNode [2022-11-20 11:23:44,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:23:44,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:44,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:23:44,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:23:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,439 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 442 [2022-11-20 11:23:44,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:23:44,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:23:44,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:23:44,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:23:44,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:23:44,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:23:44,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:23:44,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:23:44,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (1/1) ... [2022-11-20 11:23:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:23:44,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:23:44,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:23:44,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:23:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 11:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:23:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:23:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:23:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:23:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:23:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 11:23:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 11:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:23:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:23:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:23:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:23:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:23:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:23:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 11:23:44,693 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:23:44,973 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:23:44,975 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:23:46,590 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:23:47,097 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:23:47,098 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 11:23:47,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:47 BoogieIcfgContainer [2022-11-20 11:23:47,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:23:47,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:23:47,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:23:47,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:23:47,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:23:43" (1/3) ... [2022-11-20 11:23:47,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113a17a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:47, skipping insertion in model container [2022-11-20 11:23:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:23:44" (2/3) ... [2022-11-20 11:23:47,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113a17a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:23:47, skipping insertion in model container [2022-11-20 11:23:47,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:23:47" (3/3) ... [2022-11-20 11:23:47,119 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-20 11:23:47,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:23:47,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-20 11:23:47,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:23:47,377 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:23:47,449 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 11:23:47,477 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-20 11:23:47,483 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-20 11:23:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 366 transitions, 764 flow [2022-11-20 11:23:47,739 INFO L130 PetriNetUnfolder]: 25/362 cut-off events. [2022-11-20 11:23:47,739 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:23:47,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 362 events. 25/362 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 375 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-11-20 11:23:47,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 6208 [2022-11-20 11:25:39,342 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 159 DAG size of output: 158 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 11:25:43,009 INFO L134 LiptonReduction]: Checked pairs total: 20621 [2022-11-20 11:25:43,009 INFO L136 LiptonReduction]: Total number of compositions: 396 [2022-11-20 11:25:43,018 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 95 transitions, 222 flow [2022-11-20 11:25:45,687 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:45,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:25:45,756 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;@1175819e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:25:45,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-20 11:25:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:25:45,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:45,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:25:45,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:25:45,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 61343, now seen corresponding path program 1 times [2022-11-20 11:25:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:45,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712807005] [2022-11-20 11:25:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:45,994 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 [2022-11-20 11:25:45,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:46,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:25:46,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:25:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:46,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:25:46,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:46,790 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-20 11:25:46,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-20 11:25:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:46,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:46,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:46,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712807005] [2022-11-20 11:25:46,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712807005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:46,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:46,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:25:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030815966] [2022-11-20 11:25:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:46,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:46,961 INFO L87 Difference]: Start difference. First operand has 32015 states, 26013 states have (on average 5.636489447583901) internal successors, (146622), 32014 states have internal predecessors, (146622), 0 states have call successors, (0), 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) [2022-11-20 11:25:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:48,707 INFO L93 Difference]: Finished difference Result 30410 states and 139224 transitions. [2022-11-20 11:25:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:48,713 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 [2022-11-20 11:25:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:49,666 INFO L225 Difference]: With dead ends: 30410 [2022-11-20 11:25:49,666 INFO L226 Difference]: Without dead ends: 30410 [2022-11-20 11:25:49,668 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 [2022-11-20 11:25:49,678 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:49,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:25:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-11-20 11:25:52,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30410. [2022-11-20 11:25:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30410 states, 24850 states have (on average 5.602575452716298) internal successors, (139224), 30409 states have internal predecessors, (139224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30410 states to 30410 states and 139224 transitions. [2022-11-20 11:25:53,639 INFO L78 Accepts]: Start accepts. Automaton has 30410 states and 139224 transitions. Word has length 2 [2022-11-20 11:25:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 30410 states and 139224 transitions. [2022-11-20 11:25:53,643 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) [2022-11-20 11:25:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 30410 states and 139224 transitions. [2022-11-20 11:25:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 11:25:53,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:53,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 11:25:53,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:25:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:25:53,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:25:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 61344, now seen corresponding path program 1 times [2022-11-20 11:25:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:25:53,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272393263] [2022-11-20 11:25:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:53,860 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 [2022-11-20 11:25:53,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:25:53,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:25:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:25:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:54,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:25:54,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:54,399 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-20 11:25:54,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-20 11:25:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:54,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:54,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:25:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272393263] [2022-11-20 11:25:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272393263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:54,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:54,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 11:25:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657910415] [2022-11-20 11:25:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:54,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:25:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:54,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:54,486 INFO L87 Difference]: Start difference. First operand 30410 states and 139224 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) [2022-11-20 11:25:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:57,250 INFO L93 Difference]: Finished difference Result 60815 states and 278443 transitions. [2022-11-20 11:25:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:57,252 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 [2022-11-20 11:25:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:58,782 INFO L225 Difference]: With dead ends: 60815 [2022-11-20 11:25:58,783 INFO L226 Difference]: Without dead ends: 60815 [2022-11-20 11:25:58,783 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 [2022-11-20 11:25:58,785 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:58,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:25:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60815 states. [2022-11-20 11:26:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60815 to 30414. [2022-11-20 11:26:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30414 states, 24854 states have (on average 5.602076124567474) internal successors, (139234), 30413 states have internal predecessors, (139234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30414 states to 30414 states and 139234 transitions. [2022-11-20 11:26:01,736 INFO L78 Accepts]: Start accepts. Automaton has 30414 states and 139234 transitions. Word has length 2 [2022-11-20 11:26:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:01,737 INFO L495 AbstractCegarLoop]: Abstraction has 30414 states and 139234 transitions. [2022-11-20 11:26:01,737 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) [2022-11-20 11:26:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 30414 states and 139234 transitions. [2022-11-20 11:26:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 11:26:01,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:01,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 11:26:01,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:26:01,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:26:01,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:26:01,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1908262, now seen corresponding path program 1 times [2022-11-20 11:26:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:26:01,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781953510] [2022-11-20 11:26:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:01,953 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 [2022-11-20 11:26:01,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:26:01,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:26:01,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:26:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:02,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:26:02,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:02,485 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-20 11:26:02,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-20 11:26:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:02,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:26:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:02,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:26:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781953510] [2022-11-20 11:26:02,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781953510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:26:02,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:26:02,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-20 11:26:02,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896361384] [2022-11-20 11:26:02,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:26:02,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:26:02,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:26:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:26:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:02,959 INFO L87 Difference]: Start difference. First operand 30414 states and 139234 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) [2022-11-20 11:26:04,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:26:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:26:09,473 INFO L93 Difference]: Finished difference Result 91228 states and 417682 transitions. [2022-11-20 11:26:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:09,474 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 [2022-11-20 11:26:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:26:10,934 INFO L225 Difference]: With dead ends: 91228 [2022-11-20 11:26:10,934 INFO L226 Difference]: Without dead ends: 91228 [2022-11-20 11:26:10,934 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 [2022-11-20 11:26:10,936 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 363 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:26:10,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-20 11:26:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91228 states. [2022-11-20 11:26:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91228 to 30426. [2022-11-20 11:26:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30426 states, 24866 states have (on average 5.600579103997426) internal successors, (139264), 30425 states have internal predecessors, (139264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30426 states to 30426 states and 139264 transitions. [2022-11-20 11:26:13,422 INFO L78 Accepts]: Start accepts. Automaton has 30426 states and 139264 transitions. Word has length 3 [2022-11-20 11:26:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:13,423 INFO L495 AbstractCegarLoop]: Abstraction has 30426 states and 139264 transitions. [2022-11-20 11:26:13,423 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) [2022-11-20 11:26:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 30426 states and 139264 transitions. [2022-11-20 11:26:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:26:13,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:13,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:26:13,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:26:13,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:26:13,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:26:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1837064837, now seen corresponding path program 1 times [2022-11-20 11:26:13,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:26:13,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130133317] [2022-11-20 11:26:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:13,627 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 [2022-11-20 11:26:13,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:26:13,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:26:13,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:26:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:13,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:26:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:13,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:13,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:13,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:13,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:14,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:14,243 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 11:26:14,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-20 11:26:14,309 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:26:14,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 11:26:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:14,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:26:14,418 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-20 11:26:14,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:14,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:26:14,619 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-20 11:26:14,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 11:26:14,757 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 11:26:14,757 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 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-20 11:26:14,818 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-20 11:26:14,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 11:26:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:26:15,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:26:15,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:26:15,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130133317] [2022-11-20 11:26:15,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130133317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:15,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:26:15,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:26:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098607929] [2022-11-20 11:26:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:26:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:26:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:26:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:15,018 INFO L87 Difference]: Start difference. First operand 30426 states and 139264 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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) [2022-11-20 11:26:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:26:16,676 INFO L93 Difference]: Finished difference Result 30429 states and 139271 transitions. [2022-11-20 11:26:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:26:16,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 [2022-11-20 11:26:16,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:26:16,935 INFO L225 Difference]: With dead ends: 30429 [2022-11-20 11:26:16,936 INFO L226 Difference]: Without dead ends: 30429 [2022-11-20 11:26:16,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:26:16,937 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:26:16,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 239 Unchecked, 0.6s Time] [2022-11-20 11:26:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30429 states. [2022-11-20 11:26:18,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30429 to 30429. [2022-11-20 11:26:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30429 states, 24869 states have (on average 5.6001849692388115) internal successors, (139271), 30428 states have internal predecessors, (139271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:26:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30429 states to 30429 states and 139271 transitions. [2022-11-20 11:26:18,848 INFO L78 Accepts]: Start accepts. Automaton has 30429 states and 139271 transitions. Word has length 5 [2022-11-20 11:26:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:18,848 INFO L495 AbstractCegarLoop]: Abstraction has 30429 states and 139271 transitions. [2022-11-20 11:26:18,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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) [2022-11-20 11:26:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 30429 states and 139271 transitions. [2022-11-20 11:26:18,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:26:18,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:18,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:26:18,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:26:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:26:19,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:26:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1837064839, now seen corresponding path program 1 times [2022-11-20 11:26:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:26:19,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145660717] [2022-11-20 11:26:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:19,052 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 [2022-11-20 11:26:19,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:26:19,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:26:19,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:26:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:19,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:26:19,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:19,615 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 11:26:19,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 11:26:20,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:20,899 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 11:26:20,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-20 11:26:22,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:26:22,572 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-20 11:26:22,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-20 11:26:47,127 WARN L233 SmtUtils]: Spent 15.38s on a formula simplification. DAG size of input: 146 DAG size of output: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:26:47,751 INFO L321 Elim1Store]: treesize reduction 52, result has 66.0 percent of original size [2022-11-20 11:26:47,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 211 [2022-11-20 11:27:21,917 WARN L233 SmtUtils]: Spent 15.53s on a formula simplification. DAG size of input: 217 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:27:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:21,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:27:21,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:27:21,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145660717] [2022-11-20 11:27:21,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145660717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:21,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:21,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:27:21,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765618113] [2022-11-20 11:27:21,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:21,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:27:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:27:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:27:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-20 11:27:21,921 INFO L87 Difference]: Start difference. First operand 30429 states and 139271 transitions. Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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) [2022-11-20 11:27:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:27:22,861 INFO L93 Difference]: Finished difference Result 30429 states and 139270 transitions. [2022-11-20 11:27:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:27:22,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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 [2022-11-20 11:27:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:27:23,100 INFO L225 Difference]: With dead ends: 30429 [2022-11-20 11:27:23,100 INFO L226 Difference]: Without dead ends: 30429 [2022-11-20 11:27:23,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=15, Invalid=14, Unknown=1, NotChecked=0, Total=30 [2022-11-20 11:27:23,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:27:23,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 160 Unchecked, 0.5s Time] [2022-11-20 11:27:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30429 states. [2022-11-20 11:27:23,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30429 to 30429. [2022-11-20 11:27:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30429 states, 24869 states have (on average 5.600144758534722) internal successors, (139270), 30428 states have internal predecessors, (139270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:27:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30429 states to 30429 states and 139270 transitions. [2022-11-20 11:27:24,575 INFO L78 Accepts]: Start accepts. Automaton has 30429 states and 139270 transitions. Word has length 5 [2022-11-20 11:27:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:27:24,575 INFO L495 AbstractCegarLoop]: Abstraction has 30429 states and 139270 transitions. [2022-11-20 11:27:24,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 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) [2022-11-20 11:27:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 30429 states and 139270 transitions. [2022-11-20 11:27:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:27:24,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:27:24,577 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-20 11:27:24,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:27:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:27:24,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:27:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:24,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1021010208, now seen corresponding path program 2 times [2022-11-20 11:27:24,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:27:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620269360] [2022-11-20 11:27:24,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:27:24,780 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 [2022-11-20 11:27:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:27:24,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:27:24,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:27:24,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:27:24,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:27:24,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:27:24,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:25,280 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-20 11:27:25,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-20 11:27:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:25,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:27:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:27:26,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:27:26,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620269360] [2022-11-20 11:27:26,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620269360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:27:26,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:27:26,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-20 11:27:26,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423536503] [2022-11-20 11:27:26,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:27:26,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:27:26,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:27:26,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:27:26,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:27:26,642 INFO L87 Difference]: Start difference. First operand 30429 states and 139270 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) [2022-11-20 11:27:31,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:33,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:36,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:39,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:41,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:42,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:44,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:46,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:48,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:50,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:52,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:54,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:27:56,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:28:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:28:07,570 INFO L93 Difference]: Finished difference Result 212850 states and 974560 transitions. [2022-11-20 11:28:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:28:07,571 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 [2022-11-20 11:28:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:28:10,483 INFO L225 Difference]: With dead ends: 212850 [2022-11-20 11:28:10,484 INFO L226 Difference]: Without dead ends: 212850 [2022-11-20 11:28:10,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:28:10,486 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2016 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 227 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2016 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:28:10,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2016 Valid, 0 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2316 Invalid, 9 Unknown, 0 Unchecked, 35.6s Time] [2022-11-20 11:28:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212850 states. [2022-11-20 11:28:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212850 to 30444. [2022-11-20 11:28:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30444 states, 24884 states have (on average 5.598215720945186) internal successors, (139306), 30443 states have internal predecessors, (139306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30444 states to 30444 states and 139306 transitions. [2022-11-20 11:28:15,269 INFO L78 Accepts]: Start accepts. Automaton has 30444 states and 139306 transitions. Word has length 6 [2022-11-20 11:28:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:28:15,270 INFO L495 AbstractCegarLoop]: Abstraction has 30444 states and 139306 transitions. [2022-11-20 11:28:15,270 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) [2022-11-20 11:28:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30444 states and 139306 transitions. [2022-11-20 11:28:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:28:15,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:28:15,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:28:15,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:28:15,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:28:15,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:28:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1024024127, now seen corresponding path program 1 times [2022-11-20 11:28:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:28:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549676194] [2022-11-20 11:28:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:15,487 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 [2022-11-20 11:28:15,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:28:15,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:28:15,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:28:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:15,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:28:15,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:28:15,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:15,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:16,150 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-20 11:28:16,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-20 11:28:16,218 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 11:28:16,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-11-20 11:28:16,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:16,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:28:16,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:16,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:28:16,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:16,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:28:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:28:16,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:28:16,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:28:16,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549676194] [2022-11-20 11:28:16,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549676194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:28:16,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:28:16,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:28:16,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820117727] [2022-11-20 11:28:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:28:16,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:28:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:28:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:28:16,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:28:16,451 INFO L87 Difference]: Start difference. First operand 30444 states and 139306 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) [2022-11-20 11:28:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:28:18,035 INFO L93 Difference]: Finished difference Result 24269 states and 108428 transitions. [2022-11-20 11:28:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:28:18,036 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 [2022-11-20 11:28:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:28:18,174 INFO L225 Difference]: With dead ends: 24269 [2022-11-20 11:28:18,174 INFO L226 Difference]: Without dead ends: 24269 [2022-11-20 11:28:18,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:28:18,175 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:28:18,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 3 Unchecked, 0.8s Time] [2022-11-20 11:28:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24269 states. [2022-11-20 11:28:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24269 to 24269. [2022-11-20 11:28:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24269 states, 20210 states have (on average 5.3650667986145475) internal successors, (108428), 24268 states have internal predecessors, (108428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:28:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24269 states to 24269 states and 108428 transitions. [2022-11-20 11:28:19,642 INFO L78 Accepts]: Start accepts. Automaton has 24269 states and 108428 transitions. Word has length 6 [2022-11-20 11:28:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:28:19,642 INFO L495 AbstractCegarLoop]: Abstraction has 24269 states and 108428 transitions. [2022-11-20 11:28:19,643 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) [2022-11-20 11:28:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 24269 states and 108428 transitions. [2022-11-20 11:28:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:28:19,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:28:19,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:28:19,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:28:19,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:28:19,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-20 11:28:19,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:28:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1024024129, now seen corresponding path program 1 times [2022-11-20 11:28:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:28:19,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960731356] [2022-11-20 11:28:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:28:19,846 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 [2022-11-20 11:28:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:28:19,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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) [2022-11-20 11:28:19,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a967c68-b80d-4450-adf0-787fe6de69bf/bin/uautomizer-ug76WZFUDN/mathsat -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 [2022-11-20 11:28:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:28:20,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 11:28:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:28:20,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:20,352 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-20 11:28:20,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-20 11:28:21,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:21,504 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 11:28:21,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-20 11:28:22,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:28:22,737 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-20 11:28:22,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 146 [2022-11-20 11:28:41,439 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 216 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:28:42,397 INFO L321 Elim1Store]: treesize reduction 64, result has 70.4 percent of original size [2022-11-20 11:28:42,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 136 treesize of output 278