./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 b5237d83 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b5237d8 [2022-11-21 09:07:07,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:07:07,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:07:07,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:07:07,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:07:07,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:07:07,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:07:07,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:07:07,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:07:07,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:07:07,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:07:07,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:07:07,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:07:07,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:07:07,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:07:07,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:07:07,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:07:07,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:07:07,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:07:07,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:07:07,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:07:07,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:07:07,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:07:07,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:07:07,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:07:07,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:07:07,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:07:07,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:07:07,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:07:07,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:07:07,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:07:07,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:07:07,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:07:07,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:07:07,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:07:07,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:07:07,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:07:07,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:07:07,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:07:07,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:07:07,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:07:07,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 09:07:07,388 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:07:07,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:07:07,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:07:07,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:07:07,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:07:07,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:07:07,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:07:07,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:07:07,391 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:07:07,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:07:07,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:07:07,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:07:07,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:07:07,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:07:07,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:07:07,393 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:07:07,393 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:07:07,393 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:07:07,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:07:07,393 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:07:07,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:07:07,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:07:07,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:07:07,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:07:07,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:07:07,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:07,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:07:07,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:07:07,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:07:07,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:07:07,397 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-21 09:07:07,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:07:07,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:07:07,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:07:07,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:07:07,785 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:07:07,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 09:07:11,064 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:11,306 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:11,306 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 09:07:11,317 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/0bd3104dc/4d3ca8238c3e4055b3f356eacd5dd5af/FLAG63f9f4efe [2022-11-21 09:07:11,336 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/0bd3104dc/4d3ca8238c3e4055b3f356eacd5dd5af [2022-11-21 09:07:11,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:11,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:11,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:11,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:11,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:11,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:11" (1/1) ... [2022-11-21 09:07:11,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512b856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:11, skipping insertion in model container [2022-11-21 09:07:11,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:11" (1/1) ... [2022-11-21 09:07:11,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:11,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:11,692 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 09:07:11,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:11,717 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-21 09:07:11,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@89f5d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:11, skipping insertion in model container [2022-11-21 09:07:11,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:11,719 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 09:07:11,721 INFO L158 Benchmark]: Toolchain (without parser) took 379.06ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.9MB in the beginning and 134.1MB in the end (delta: -65.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-21 09:07:11,722 INFO L158 Benchmark]: CDTParser took 1.07ms. Allocated memory is still 134.2MB. Free memory was 108.5MB in the beginning and 108.4MB in the end (delta: 87.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:07:11,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.03ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.7MB in the beginning and 134.1MB in the end (delta: -65.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-21 09:07:11,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07ms. Allocated memory is still 134.2MB. Free memory was 108.5MB in the beginning and 108.4MB in the end (delta: 87.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.03ms. Allocated memory was 134.2MB in the beginning and 167.8MB in the end (delta: 33.6MB). Free memory was 68.7MB in the beginning and 134.1MB in the end (delta: -65.4MB). Peak memory consumption was 9.5MB. 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b5237d8 [2022-11-21 09:07:14,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:07:14,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:07:14,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:07:14,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:07:14,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:07:14,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:07:14,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:07:14,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:07:14,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:07:14,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:07:14,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:07:14,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:07:14,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:07:14,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:07:14,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:07:14,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:07:14,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:07:14,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:07:14,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:07:14,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:07:14,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:07:14,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:07:14,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:07:14,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:07:14,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:07:14,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:07:14,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:07:14,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:07:14,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:07:14,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:07:14,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:07:14,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:07:14,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:07:14,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:07:14,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:07:14,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:07:14,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:07:14,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:07:14,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:07:14,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:07:14,387 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 09:07:14,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:07:14,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:07:14,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:07:14,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:07:14,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:07:14,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:07:14,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:07:14,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:07:14,433 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:07:14,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:07:14,434 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:07:14,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 09:07:14,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:07:14,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:07:14,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:07:14,436 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 09:07:14,436 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 09:07:14,436 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 09:07:14,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:07:14,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 09:07:14,437 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 09:07:14,437 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 09:07:14,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:07:14,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:07:14,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:07:14,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:07:14,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:07:14,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:14,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:07:14,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:07:14,439 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 09:07:14,440 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 09:07:14,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 09:07:14,440 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-21 09:07:14,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:07:14,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:07:14,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:07:14,978 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:07:14,978 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:07:14,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 09:07:18,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:07:18,536 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:07:18,536 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 09:07:18,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/5fbba1653/e3a5bdb067c34c309bf98ee68face02b/FLAGf7078ccf0 [2022-11-21 09:07:18,566 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/data/5fbba1653/e3a5bdb067c34c309bf98ee68face02b [2022-11-21 09:07:18,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:07:18,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:07:18,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:18,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:07:18,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:07:18,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:18" (1/1) ... [2022-11-21 09:07:18,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314e10ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:18, skipping insertion in model container [2022-11-21 09:07:18,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:07:18" (1/1) ... [2022-11-21 09:07:18,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:07:18,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:18,880 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 09:07:18,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:18,929 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 09:07:18,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:07:18,962 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 09:07:18,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:19,011 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:07:19,066 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_79f79553-d76d-4661-9a5e-6e138e1c0ba3/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 09:07:19,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:07:19,104 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:07:19,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19 WrapperNode [2022-11-21 09:07:19,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:07:19,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:19,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:07:19,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:07:19,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,213 INFO L138 Inliner]: procedures = 28, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 442 [2022-11-21 09:07:19,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:07:19,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:07:19,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:07:19,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:07:19,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:07:19,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:07:19,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:07:19,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:07:19,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (1/1) ... [2022-11-21 09:07:19,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:07:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:07:19,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:07:19,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:07:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:07:19,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 09:07:19,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:07:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 09:07:19,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 09:07:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 09:07:19,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 09:07:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 09:07:19,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 09:07:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 09:07:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 09:07:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 09:07:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:07:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:07:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 09:07:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:07:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:07:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:07:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 09:07:19,437 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:07:19,594 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:07:19,597 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:07:20,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:07:21,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:07:21,330 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-21 09:07:21,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:21 BoogieIcfgContainer [2022-11-21 09:07:21,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:07:21,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:07:21,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:07:21,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:07:21,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:07:18" (1/3) ... [2022-11-21 09:07:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e41f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:21, skipping insertion in model container [2022-11-21 09:07:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:07:19" (2/3) ... [2022-11-21 09:07:21,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e41f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:07:21, skipping insertion in model container [2022-11-21 09:07:21,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:07:21" (3/3) ... [2022-11-21 09:07:21,348 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-21 09:07:21,376 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:07:21,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-11-21 09:07:21,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:07:21,597 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 09:07:21,657 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 09:07:21,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-21 09:07:21,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 366 transitions, 764 flow [2022-11-21 09:07:21,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 366 transitions, 764 flow [2022-11-21 09:07:21,927 INFO L130 PetriNetUnfolder]: 25/362 cut-off events. [2022-11-21 09:07:21,927 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 09:07:21,935 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. [2022-11-21 09:07:21,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 6208 [2022-11-21 09:08:57,214 WARN L233 SmtUtils]: Spent 6.17s 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) [2022-11-21 09:09:00,012 INFO L134 LiptonReduction]: Checked pairs total: 20621 [2022-11-21 09:09:00,013 INFO L136 LiptonReduction]: Total number of compositions: 396 [2022-11-21 09:09:00,019 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 95 transitions, 222 flow [2022-11-21 09:09:02,198 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) [2022-11-21 09:09:02,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:09:02,243 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;@7a99ec14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:09:02,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2022-11-21 09:09:02,437 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) [2022-11-21 09:09:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:09:02,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:02,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:09:02,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-21 09:09:02,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash 61343, now seen corresponding path program 1 times [2022-11-21 09:09:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:02,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058610237] [2022-11-21 09:09:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:02,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:02,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 09:09:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:02,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 09:09:02,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:03,051 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-21 09:09:03,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-11-21 09:09:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:03,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:03,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:03,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058610237] [2022-11-21 09:09:03,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058610237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:03,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:03,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:09:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822580030] [2022-11-21 09:09:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:03,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:09:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:09:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:09:03,258 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) [2022-11-21 09:09:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:05,151 INFO L93 Difference]: Finished difference Result 30410 states and 139224 transitions. [2022-11-21 09:09:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:09:05,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 09:09:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:05,700 INFO L225 Difference]: With dead ends: 30410 [2022-11-21 09:09:05,701 INFO L226 Difference]: Without dead ends: 30410 [2022-11-21 09:09:05,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:09:05,707 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:05,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 09:09:05,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-11-21 09:09:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30410. [2022-11-21 09:09:07,569 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) [2022-11-21 09:09:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30410 states to 30410 states and 139224 transitions. [2022-11-21 09:09:08,346 INFO L78 Accepts]: Start accepts. Automaton has 30410 states and 139224 transitions. Word has length 2 [2022-11-21 09:09:08,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:08,349 INFO L495 AbstractCegarLoop]: Abstraction has 30410 states and 139224 transitions. [2022-11-21 09:09:08,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 30410 states and 139224 transitions. [2022-11-21 09:09:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 09:09:08,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:08,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 09:09:08,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:08,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:08,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-21 09:09:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash 61344, now seen corresponding path program 1 times [2022-11-21 09:09:08,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:08,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375507852] [2022-11-21 09:09:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:08,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:08,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:08,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:08,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 09:09:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:08,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 09:09:08,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:08,970 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-21 09:09:08,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-21 09:09:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:09,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:09,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:09,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375507852] [2022-11-21 09:09:09,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375507852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:09,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:09,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 09:09:09,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479132604] [2022-11-21 09:09:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:09:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:09:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:09:09,020 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) [2022-11-21 09:09:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:11,511 INFO L93 Difference]: Finished difference Result 60815 states and 278443 transitions. [2022-11-21 09:09:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:09:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 09:09:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:12,565 INFO L225 Difference]: With dead ends: 60815 [2022-11-21 09:09:12,566 INFO L226 Difference]: Without dead ends: 60815 [2022-11-21 09:09:12,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:09:12,567 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:12,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 09:09:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60815 states. [2022-11-21 09:09:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60815 to 30414. [2022-11-21 09:09:15,010 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) [2022-11-21 09:09:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30414 states to 30414 states and 139234 transitions. [2022-11-21 09:09:15,183 INFO L78 Accepts]: Start accepts. Automaton has 30414 states and 139234 transitions. Word has length 2 [2022-11-21 09:09:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:15,183 INFO L495 AbstractCegarLoop]: Abstraction has 30414 states and 139234 transitions. [2022-11-21 09:09:15,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 30414 states and 139234 transitions. [2022-11-21 09:09:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 09:09:15,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:15,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 09:09:15,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-21 09:09:15,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:15,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-21 09:09:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1908262, now seen corresponding path program 1 times [2022-11-21 09:09:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:15,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137411559] [2022-11-21 09:09:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:15,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:15,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:15,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:15,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 09:09:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:15,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 09:09:15,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:15,801 INFO L321 Elim1Store]: treesize reduction 138, result has 28.5 percent of original size [2022-11-21 09:09:15,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 62 [2022-11-21 09:09:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:15,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 09:09:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:16,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:16,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137411559] [2022-11-21 09:09:16,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137411559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 09:09:16,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 09:09:16,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 09:09:16,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092138560] [2022-11-21 09:09:16,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 09:09:16,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:09:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:09:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:09:16,200 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) [2022-11-21 09:09:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:22,027 INFO L93 Difference]: Finished difference Result 91228 states and 417682 transitions. [2022-11-21 09:09:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:09:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 09:09:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:23,264 INFO L225 Difference]: With dead ends: 91228 [2022-11-21 09:09:23,264 INFO L226 Difference]: Without dead ends: 91228 [2022-11-21 09:09:23,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:09:23,272 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 363 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:23,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 09:09:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91228 states. [2022-11-21 09:09:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91228 to 30426. [2022-11-21 09:09:25,954 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) [2022-11-21 09:09:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30426 states to 30426 states and 139264 transitions. [2022-11-21 09:09:26,097 INFO L78 Accepts]: Start accepts. Automaton has 30426 states and 139264 transitions. Word has length 3 [2022-11-21 09:09:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:26,097 INFO L495 AbstractCegarLoop]: Abstraction has 30426 states and 139264 transitions. [2022-11-21 09:09:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 30426 states and 139264 transitions. [2022-11-21 09:09:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:09:26,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:26,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:09:26,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 09:09:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:26,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-21 09:09:26,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1837064837, now seen corresponding path program 1 times [2022-11-21 09:09:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:26,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718840070] [2022-11-21 09:09:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:26,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:26,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:26,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:26,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 09:09:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:26,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 09:09:26,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:26,857 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-21 09:09:26,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-11-21 09:09:26,919 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-21 09:09:26,920 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 [2022-11-21 09:09:27,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:27,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 09:09:27,015 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 [2022-11-21 09:09:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:27,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 09:09:27,172 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 09:09:27,173 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 [2022-11-21 09:09:27,287 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 09:09:27,290 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 [2022-11-21 09:09:27,345 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-21 09:09:27,345 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 [2022-11-21 09:09:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:09:27,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 09:09:27,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 09:09:27,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718840070] [2022-11-21 09:09:27,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718840070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:09:27,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:09:27,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 09:09:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047025004] [2022-11-21 09:09:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:09:27,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:09:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 09:09:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:09:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:09:27,523 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) [2022-11-21 09:09:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:09:30,271 INFO L93 Difference]: Finished difference Result 24251 states and 108389 transitions. [2022-11-21 09:09:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:09:30,274 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 [2022-11-21 09:09:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:09:30,624 INFO L225 Difference]: With dead ends: 24251 [2022-11-21 09:09:30,624 INFO L226 Difference]: Without dead ends: 24251 [2022-11-21 09:09:30,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:09:30,626 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:09:30,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 09:09:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24251 states. [2022-11-21 09:09:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24251 to 24251. [2022-11-21 09:09:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24251 states, 20192 states have (on average 5.367917987321712) internal successors, (108389), 24250 states have internal predecessors, (108389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:09:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24251 states to 24251 states and 108389 transitions. [2022-11-21 09:09:32,031 INFO L78 Accepts]: Start accepts. Automaton has 24251 states and 108389 transitions. Word has length 5 [2022-11-21 09:09:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:09:32,031 INFO L495 AbstractCegarLoop]: Abstraction has 24251 states and 108389 transitions. [2022-11-21 09:09:32,032 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) [2022-11-21 09:09:32,033 INFO L276 IsEmpty]: Start isEmpty. Operand 24251 states and 108389 transitions. [2022-11-21 09:09:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 09:09:32,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:09:32,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 09:09:32,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-21 09:09:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:32,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2022-11-21 09:09:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:09:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1837064839, now seen corresponding path program 1 times [2022-11-21 09:09:32,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 09:09:32,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512939047] [2022-11-21 09:09:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:09:32,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 09:09:32,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 09:09:32,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 09:09:32,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79f79553-d76d-4661-9a5e-6e138e1c0ba3/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 09:09:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:09:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 09:09:32,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 09:09:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:32,689 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2022-11-21 09:09:32,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2022-11-21 09:09:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:33,670 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-21 09:09:33,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 52 [2022-11-21 09:09:34,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 09:09:34,855 INFO L321 Elim1Store]: treesize reduction 66, result has 49.2 percent of original size [2022-11-21 09:09:34,856 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 [2022-11-21 09:09:51,725 WARN L233 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 146 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 09:09:52,474 INFO L321 Elim1Store]: treesize reduction 64, result has 70.4 percent of original size [2022-11-21 09:09:52,474 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 129 treesize of output 271