./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX --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 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:01,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:01,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:01,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:01,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:01,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:01,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:01,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:01,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:01,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:01,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:01,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:01,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:01,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:01,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:01,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:01,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:01,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:01,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:01,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:01,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:01,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:01,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:01,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:01,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:01,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:01,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:01,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:01,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:01,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:01,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:01,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:01,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:01,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:01,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:01,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:01,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:01,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:01,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:01,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:01,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:01,501 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:09:01,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:01,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:01,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:01,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:01,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:01,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:01,558 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:01,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:01,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:01,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:01,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:01,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:01,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:01,561 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:01,561 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:01,562 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:01,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:01,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:01,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:01,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:01,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:01,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:01,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:01,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:01,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:01,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:01,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:01,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:01,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:01,566 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_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-11-09 09:09:01,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:01,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:01,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:01,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:01,952 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:01,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-09 09:09:02,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/f61428997/655e59d2395a4ad1a575559fc6687a18/FLAG7148e09f7 [2021-11-09 09:09:02,704 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:02,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-09 09:09:02,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/f61428997/655e59d2395a4ad1a575559fc6687a18/FLAG7148e09f7 [2021-11-09 09:09:02,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/f61428997/655e59d2395a4ad1a575559fc6687a18 [2021-11-09 09:09:02,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:02,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:02,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:02,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:02,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:02,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:02" (1/1) ... [2021-11-09 09:09:02,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc98bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:02, skipping insertion in model container [2021-11-09 09:09:02,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:02" (1/1) ... [2021-11-09 09:09:02,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:03,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:03,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:03,527 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 09:09:03,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49fb5ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:03, skipping insertion in model container [2021-11-09 09:09:03,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:03,530 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:09:03,533 INFO L168 Benchmark]: Toolchain (without parser) took 575.59 ms. Allocated memory is still 119.5 MB. Free memory was 81.5 MB in the beginning and 87.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:03,535 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:03,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.78 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 87.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:03,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 119.5 MB. Free memory was 91.7 MB in the beginning and 91.7 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.78 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 87.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX --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 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:05,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:05,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:05,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:05,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:05,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:05,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:05,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:05,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:05,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:05,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:05,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:05,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:05,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:05,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:05,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:05,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:05,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:05,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:05,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:05,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:05,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:05,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:05,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:05,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:05,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:05,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:05,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:05,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:05,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:05,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:05,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:05,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:05,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:05,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:05,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:05,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:05,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:05,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:05,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:05,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:05,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:09:06,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:06,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:06,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:06,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:06,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:06,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:06,053 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:06,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:06,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:06,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:06,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:06,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:06,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:06,055 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:06,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:06,055 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:06,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:06,056 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:06,056 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:09:06,056 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:09:06,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:06,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:06,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:06,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:06,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:06,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:06,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:06,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:06,058 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:09:06,058 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:09:06,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:06,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:09:06,059 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_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4318218de1a670b98e217596890d501e5109c78977de7e98dfa51804dcb18c15 [2021-11-09 09:09:06,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:06,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:06,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:06,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:06,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:06,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-09 09:09:06,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/9d407b9ed/a149e998b8434c189875e3ba127b27c5/FLAGd036a2ed3 [2021-11-09 09:09:07,429 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:07,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/sv-benchmarks/c/ldv-memsafety/memleaks_test23_4.i [2021-11-09 09:09:07,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/9d407b9ed/a149e998b8434c189875e3ba127b27c5/FLAGd036a2ed3 [2021-11-09 09:09:07,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/data/9d407b9ed/a149e998b8434c189875e3ba127b27c5 [2021-11-09 09:09:07,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:07,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:07,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:07,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:07,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:07,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:07" (1/1) ... [2021-11-09 09:09:07,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ad2b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:07, skipping insertion in model container [2021-11-09 09:09:07,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:07" (1/1) ... [2021-11-09 09:09:07,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:07,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:08,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:08,284 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:09:08,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:08,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:08,421 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:08,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:08,599 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:08,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08 WrapperNode [2021-11-09 09:09:08,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:08,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:08,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:08,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:08,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:08,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:08,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:08,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:08,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (1/1) ... [2021-11-09 09:09:08,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:08,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:08,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:08,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:08,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:09:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 09:09:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:08,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:09:08,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-09 09:09:08,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-09 09:09:08,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-09 09:09:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-09 09:09:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-09 09:09:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-09 09:09:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-09 09:09:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-09 09:09:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-09 09:09:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-09 09:09:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-09 09:09:08,881 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_item [2021-11-09 09:09:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_register_report [2021-11-09 09:09:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_parser_main [2021-11-09 09:09:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2021-11-09 09:09:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure hid_open_report [2021-11-09 09:09:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_device [2021-11-09 09:09:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_23 [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_23 [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-09 09:09:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-09 09:09:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:09:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:09:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:09:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:09:08,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:09:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:09:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:09:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:09:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:09:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:09:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:09:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:09:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:09:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:09:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:09:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:09:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:09:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:09:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:09:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:09:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:09:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:09:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:09:08,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:09:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:09:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:09:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:09:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:09:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:09:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:09:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:09:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:09:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:09:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:09:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:09:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:09:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:09:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:09:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:09:08,900 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:09:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:09:08,901 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:09:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:09:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:09:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:09:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:09:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:09:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:09:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:09:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:09:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:09:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:09:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:09:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:09:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:09:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-09 09:09:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-09 09:09:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-09 09:09:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:09:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-09 09:09:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-09 09:09:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-09 09:09:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-09 09:09:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:09:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-09 09:09:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-09 09:09:08,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_item [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure hid_register_report [2021-11-09 09:09:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure hid_parser_main [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure hid_open_report [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_device [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure probe_23 [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_23 [2021-11-09 09:09:08,928 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 09:09:08,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 09:09:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-09 09:09:08,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-09 09:09:09,567 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:09:10,118 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 09:09:10,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:10,699 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-09 09:09:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:10 BoogieIcfgContainer [2021-11-09 09:09:10,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:10,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:10,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:10,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:10,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:07" (1/3) ... [2021-11-09 09:09:10,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef50ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:10, skipping insertion in model container [2021-11-09 09:09:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:08" (2/3) ... [2021-11-09 09:09:10,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef50ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:10, skipping insertion in model container [2021-11-09 09:09:10,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:10" (3/3) ... [2021-11-09 09:09:10,714 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test23_4.i [2021-11-09 09:09:10,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:10,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 124 error locations. [2021-11-09 09:09:10,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:10,791 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:09:10,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2021-11-09 09:09:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 174 states have (on average 1.6896551724137931) internal successors, (294), 274 states have internal predecessors, (294), 31 states have call successors, (31), 26 states have call predecessors, (31), 26 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-09 09:09:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:09:10,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:10,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:09:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 430906951, now seen corresponding path program 1 times [2021-11-09 09:09:10,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:10,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594203223] [2021-11-09 09:09:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:10,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:10,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:10,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:09:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:09:11,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:11,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 [2021-11-09 09:09:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:11,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:11,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:11,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594203223] [2021-11-09 09:09:11,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594203223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-09 09:09:11,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371830158] [2021-11-09 09:09:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:09:11,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:09:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:11,581 INFO L87 Difference]: Start difference. First operand has 333 states, 174 states have (on average 1.6896551724137931) internal successors, (294), 274 states have internal predecessors, (294), 31 states have call successors, (31), 26 states have call predecessors, (31), 26 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:09:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:12,636 INFO L93 Difference]: Finished difference Result 254 states and 269 transitions. [2021-11-09 09:09:12,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:09:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-09 09:09:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:12,653 INFO L225 Difference]: With dead ends: 254 [2021-11-09 09:09:12,653 INFO L226 Difference]: Without dead ends: 251 [2021-11-09 09:09:12,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-09 09:09:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 243. [2021-11-09 09:09:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 124 states have (on average 1.717741935483871) internal successors, (213), 200 states have internal predecessors, (213), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2021-11-09 09:09:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 259 transitions. [2021-11-09 09:09:12,753 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 259 transitions. Word has length 18 [2021-11-09 09:09:12,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:12,754 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 259 transitions. [2021-11-09 09:09:12,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:09:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 259 transitions. [2021-11-09 09:09:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:09:12,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:12,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:12,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:12,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:12,972 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:09:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 430906952, now seen corresponding path program 1 times [2021-11-09 09:09:12,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:12,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29750592] [2021-11-09 09:09:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:12,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:12,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:12,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:09:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:13,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:09:13,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:13,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 [2021-11-09 09:09:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:13,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:14,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:14,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29750592] [2021-11-09 09:09:14,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29750592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:14,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:14,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-09 09:09:14,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660010065] [2021-11-09 09:09:14,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:09:14,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:09:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:09:14,108 INFO L87 Difference]: Start difference. First operand 243 states and 259 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:09:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:16,404 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2021-11-09 09:09:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:09:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2021-11-09 09:09:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:16,408 INFO L225 Difference]: With dead ends: 249 [2021-11-09 09:09:16,408 INFO L226 Difference]: Without dead ends: 249 [2021-11-09 09:09:16,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:09:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-09 09:09:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2021-11-09 09:09:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 124 states have (on average 1.7016129032258065) internal successors, (211), 200 states have internal predecessors, (211), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2021-11-09 09:09:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 257 transitions. [2021-11-09 09:09:16,423 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 257 transitions. Word has length 18 [2021-11-09 09:09:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:16,424 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 257 transitions. [2021-11-09 09:09:16,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:09:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 257 transitions. [2021-11-09 09:09:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:09:16,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:16,426 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:16,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:16,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:16,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:09:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2121250010, now seen corresponding path program 1 times [2021-11-09 09:09:16,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:16,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578382255] [2021-11-09 09:09:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:16,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:16,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:09:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:16,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:16,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:16,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:17,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:17,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578382255] [2021-11-09 09:09:17,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578382255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:17,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:17,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 09:09:17,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712583805] [2021-11-09 09:09:17,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:17,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:17,058 INFO L87 Difference]: Start difference. First operand 243 states and 257 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:09:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:17,099 INFO L93 Difference]: Finished difference Result 236 states and 249 transitions. [2021-11-09 09:09:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-09 09:09:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:17,109 INFO L225 Difference]: With dead ends: 236 [2021-11-09 09:09:17,109 INFO L226 Difference]: Without dead ends: 236 [2021-11-09 09:09:17,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-09 09:09:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2021-11-09 09:09:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 120 states have (on average 1.6916666666666667) internal successors, (203), 192 states have internal predecessors, (203), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-09 09:09:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 247 transitions. [2021-11-09 09:09:17,144 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 247 transitions. Word has length 18 [2021-11-09 09:09:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 247 transitions. [2021-11-09 09:09:17,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:09:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 247 transitions. [2021-11-09 09:09:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:09:17,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:17,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:17,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:17,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:17,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe_23Err0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:09:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1425871790, now seen corresponding path program 1 times [2021-11-09 09:09:17,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:17,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869317336] [2021-11-09 09:09:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:17,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:17,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:17,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:09:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:17,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:09:17,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:17,609 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-09 09:09:17,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-11-09 09:09:17,820 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:09:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 32 [2021-11-09 09:09:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:18,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:31,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:31,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869317336] [2021-11-09 09:09:31,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869317336] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:31,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:31,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-09 09:09:31,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177054590] [2021-11-09 09:09:31,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:09:31,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:09:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=142, Unknown=5, NotChecked=0, Total=182 [2021-11-09 09:09:31,392 INFO L87 Difference]: Start difference. First operand 234 states and 247 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-09 09:17:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:17:48,613 INFO L93 Difference]: Finished difference Result 338 states and 359 transitions. [2021-11-09 09:17:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:17:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2021-11-09 09:17:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:17:48,621 INFO L225 Difference]: With dead ends: 338 [2021-11-09 09:17:48,622 INFO L226 Difference]: Without dead ends: 335 [2021-11-09 09:17:48,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=108, Invalid=301, Unknown=11, NotChecked=0, Total=420 [2021-11-09 09:17:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-09 09:17:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 258. [2021-11-09 09:17:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 138 states have (on average 1.6594202898550725) internal successors, (229), 211 states have internal predecessors, (229), 25 states have call successors, (25), 23 states have call predecessors, (25), 24 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2021-11-09 09:17:48,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 284 transitions. [2021-11-09 09:17:48,640 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 284 transitions. Word has length 22 [2021-11-09 09:17:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:17:48,641 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 284 transitions. [2021-11-09 09:17:48,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-09 09:17:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 284 transitions. [2021-11-09 09:17:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:17:48,643 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:17:48,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:17:48,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:17:48,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:17:48,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting probe_23Err1REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:17:48,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:17:48,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1425871791, now seen corresponding path program 1 times [2021-11-09 09:17:48,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:17:48,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53241191] [2021-11-09 09:17:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:17:48,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:17:48,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:17:48,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:17:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:17:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:17:49,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 09:17:49,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:17:49,153 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 09:17:49,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 22 treesize of output 23 [2021-11-09 09:17:49,241 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-11-09 09:17:49,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 36 [2021-11-09 09:17:52,738 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-09 09:17:52,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-11-09 09:17:52,865 INFO L354 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2021-11-09 09:17:52,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 73 [2021-11-09 09:17:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:17:54,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:18:03,775 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_22| (_ BitVec 32)) (v_probe_23_~dev.base_BEFORE_CALL_8 (_ BitVec 32)) (v_probe_23_~dev.offset_BEFORE_CALL_4 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_22|))) (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd v_probe_23_~dev.offset_BEFORE_CALL_4 (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_22| ldv_malloc_~size) v_probe_23_~dev.base_BEFORE_CALL_8))) (bvule v_probe_23_~dev.offset_BEFORE_CALL_4 (bvadd v_probe_23_~dev.offset_BEFORE_CALL_4 (_ bv4 32)))) (exists ((|v_ldv_malloc_#res.base_21| (_ BitVec 32))) (and (or (not (bvule v_probe_23_~dev.offset_BEFORE_CALL_4 (bvadd v_probe_23_~dev.offset_BEFORE_CALL_4 (_ bv4 32)))) (exists ((v_ldv_malloc_~size_19 (_ BitVec 32))) (not (bvule (bvadd v_probe_23_~dev.offset_BEFORE_CALL_4 (_ bv4 32)) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_21| v_ldv_malloc_~size_19) v_probe_23_~dev.base_BEFORE_CALL_8))))) (= (_ bv0 1) (select |c_old(#valid)| |v_ldv_malloc_#res.base_21|)))))) is different from true [2021-11-09 09:18:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:18:06,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:18:06,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53241191] [2021-11-09 09:18:06,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53241191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:18:06,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:18:06,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-11-09 09:18:06,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846260018] [2021-11-09 09:18:06,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:18:06,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:18:06,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:18:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=4, NotChecked=24, Total=210 [2021-11-09 09:18:06,115 INFO L87 Difference]: Start difference. First operand 258 states and 284 transitions. Second operand has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 7 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-09 09:23:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:00,453 INFO L93 Difference]: Finished difference Result 338 states and 358 transitions. [2021-11-09 09:23:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:23:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 7 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 22 [2021-11-09 09:23:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:00,458 INFO L225 Difference]: With dead ends: 338 [2021-11-09 09:23:00,458 INFO L226 Difference]: Without dead ends: 338 [2021-11-09 09:23:00,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=146, Invalid=444, Unknown=14, NotChecked=46, Total=650 [2021-11-09 09:23:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-09 09:23:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 257. [2021-11-09 09:23:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 138 states have (on average 1.6521739130434783) internal successors, (228), 210 states have internal predecessors, (228), 25 states have call successors, (25), 23 states have call predecessors, (25), 24 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2021-11-09 09:23:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2021-11-09 09:23:00,485 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 22 [2021-11-09 09:23:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2021-11-09 09:23:00,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 7 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-09 09:23:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2021-11-09 09:23:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 09:23:00,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:00,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:00,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:00,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:00,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1535413958, now seen corresponding path program 1 times [2021-11-09 09:23:00,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:00,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858783448] [2021-11-09 09:23:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:00,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:00,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:00,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:23:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:00,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:23:00,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:01,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:01,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:01,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858783448] [2021-11-09 09:23:01,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858783448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:01,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:01,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-09 09:23:01,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389249370] [2021-11-09 09:23:01,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:23:01,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:01,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:23:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:23:01,359 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 09:23:01,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:01,440 INFO L93 Difference]: Finished difference Result 253 states and 277 transitions. [2021-11-09 09:23:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:23:01,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-11-09 09:23:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:01,445 INFO L225 Difference]: With dead ends: 253 [2021-11-09 09:23:01,446 INFO L226 Difference]: Without dead ends: 253 [2021-11-09 09:23:01,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:23:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-09 09:23:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-09 09:23:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 135 states have (on average 1.651851851851852) internal successors, (223), 207 states have internal predecessors, (223), 25 states have call successors, (25), 23 states have call predecessors, (25), 23 states have return successors, (29), 23 states have call predecessors, (29), 24 states have call successors, (29) [2021-11-09 09:23:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 277 transitions. [2021-11-09 09:23:01,479 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 277 transitions. Word has length 22 [2021-11-09 09:23:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:01,480 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 277 transitions. [2021-11-09 09:23:01,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-09 09:23:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 277 transitions. [2021-11-09 09:23:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:23:01,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:01,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:01,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:01,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:01,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting disconnect_deviceErr0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1886241945, now seen corresponding path program 1 times [2021-11-09 09:23:01,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:01,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670329456] [2021-11-09 09:23:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:01,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:01,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:01,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:23:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:01,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:23:01,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:02,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:02,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:02,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670329456] [2021-11-09 09:23:02,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670329456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:02,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:02,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-09 09:23:02,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678973188] [2021-11-09 09:23:02,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:23:02,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:23:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:23:02,464 INFO L87 Difference]: Start difference. First operand 253 states and 277 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 09:23:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:02,622 INFO L93 Difference]: Finished difference Result 253 states and 270 transitions. [2021-11-09 09:23:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:23:02,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 24 [2021-11-09 09:23:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:02,625 INFO L225 Difference]: With dead ends: 253 [2021-11-09 09:23:02,626 INFO L226 Difference]: Without dead ends: 245 [2021-11-09 09:23:02,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:23:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-09 09:23:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 243. [2021-11-09 09:23:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 129 states have (on average 1.6589147286821706) internal successors, (214), 200 states have internal predecessors, (214), 22 states have call successors, (22), 21 states have call predecessors, (22), 22 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2021-11-09 09:23:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 260 transitions. [2021-11-09 09:23:02,639 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 260 transitions. Word has length 24 [2021-11-09 09:23:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:02,639 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 260 transitions. [2021-11-09 09:23:02,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-09 09:23:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 260 transitions. [2021-11-09 09:23:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 09:23:02,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:02,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:02,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:02,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:02,860 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting hid_open_reportErr0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1670931850, now seen corresponding path program 1 times [2021-11-09 09:23:02,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:02,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552636844] [2021-11-09 09:23:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:02,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:02,862 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:02,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:23:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:03,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:23:03,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:03,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 [2021-11-09 09:23:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:03,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:03,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:03,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552636844] [2021-11-09 09:23:03,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552636844] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:03,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:03,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2021-11-09 09:23:03,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707866757] [2021-11-09 09:23:03,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:23:03,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:23:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:23:03,629 INFO L87 Difference]: Start difference. First operand 243 states and 260 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-09 09:23:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:05,272 INFO L93 Difference]: Finished difference Result 249 states and 269 transitions. [2021-11-09 09:23:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:23:05,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2021-11-09 09:23:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:05,276 INFO L225 Difference]: With dead ends: 249 [2021-11-09 09:23:05,276 INFO L226 Difference]: Without dead ends: 249 [2021-11-09 09:23:05,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:23:05,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-09 09:23:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 246. [2021-11-09 09:23:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 202 states have internal predecessors, (219), 23 states have call successors, (23), 21 states have call predecessors, (23), 22 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-11-09 09:23:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 267 transitions. [2021-11-09 09:23:05,289 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 267 transitions. Word has length 36 [2021-11-09 09:23:05,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:05,290 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 267 transitions. [2021-11-09 09:23:05,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-09 09:23:05,290 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 267 transitions. [2021-11-09 09:23:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 09:23:05,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:05,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:05,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:05,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:05,511 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting hid_open_reportErr1REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1670931849, now seen corresponding path program 1 times [2021-11-09 09:23:05,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:05,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882743300] [2021-11-09 09:23:05,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:05,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:05,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:05,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:23:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:05,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:23:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:05,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 [2021-11-09 09:23:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:06,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:07,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:07,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882743300] [2021-11-09 09:23:07,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882743300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:07,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:07,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-09 09:23:07,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654262672] [2021-11-09 09:23:07,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:23:07,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:07,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:23:07,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:23:07,070 INFO L87 Difference]: Start difference. First operand 246 states and 267 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 09:23:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:09,972 INFO L93 Difference]: Finished difference Result 248 states and 268 transitions. [2021-11-09 09:23:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:23:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2021-11-09 09:23:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:09,976 INFO L225 Difference]: With dead ends: 248 [2021-11-09 09:23:09,976 INFO L226 Difference]: Without dead ends: 248 [2021-11-09 09:23:09,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:23:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-09 09:23:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2021-11-09 09:23:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 200 states have internal predecessors, (216), 23 states have call successors, (23), 21 states have call predecessors, (23), 22 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-11-09 09:23:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 264 transitions. [2021-11-09 09:23:09,989 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 264 transitions. Word has length 36 [2021-11-09 09:23:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:09,992 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 264 transitions. [2021-11-09 09:23:09,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-09 09:23:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 264 transitions. [2021-11-09 09:23:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 09:23:09,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:09,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:10,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:10,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:10,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe_23Err2ASSERT_VIOLATIONMEMORY_FREE === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:10,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1824458005, now seen corresponding path program 1 times [2021-11-09 09:23:10,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:10,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701594242] [2021-11-09 09:23:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:10,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:10,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:10,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:23:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:10,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:23:10,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:10,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:11,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:11,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701594242] [2021-11-09 09:23:11,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701594242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:11,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:11,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-09 09:23:11,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759160698] [2021-11-09 09:23:11,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:23:11,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:23:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:23:11,016 INFO L87 Difference]: Start difference. First operand 244 states and 264 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-09 09:23:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:23:11,197 INFO L93 Difference]: Finished difference Result 244 states and 263 transitions. [2021-11-09 09:23:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:23:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2021-11-09 09:23:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:23:11,199 INFO L225 Difference]: With dead ends: 244 [2021-11-09 09:23:11,200 INFO L226 Difference]: Without dead ends: 244 [2021-11-09 09:23:11,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:23:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-09 09:23:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-09 09:23:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 133 states have (on average 1.6165413533834587) internal successors, (215), 200 states have internal predecessors, (215), 23 states have call successors, (23), 21 states have call predecessors, (23), 22 states have return successors, (25), 23 states have call predecessors, (25), 22 states have call successors, (25) [2021-11-09 09:23:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 263 transitions. [2021-11-09 09:23:11,209 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 263 transitions. Word has length 40 [2021-11-09 09:23:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:23:11,210 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 263 transitions. [2021-11-09 09:23:11,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-09 09:23:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 263 transitions. [2021-11-09 09:23:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:23:11,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:23:11,212 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:23:11,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:23:11,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:23:11,424 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fetch_itemErr0REQUIRES_VIOLATION === [disconnect_deviceErr0REQUIRES_VIOLATION, disconnect_deviceErr1REQUIRES_VIOLATION, disconnect_deviceErr2REQUIRES_VIOLATION (and 121 more)] === [2021-11-09 09:23:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:23:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2124546889, now seen corresponding path program 1 times [2021-11-09 09:23:11,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:23:11,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464536392] [2021-11-09 09:23:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:23:11,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:23:11,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:23:11,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:23:11,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1927e7c-158c-49e5-96ca-0b0efba4bd2c/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:23:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:23:11,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:23:11,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:23:11,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 [2021-11-09 09:23:11,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 13 treesize of output 10 [2021-11-09 09:23:12,180 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:23:12,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 20 treesize of output 27 [2021-11-09 09:23:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:13,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:23:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:23:22,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:23:22,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464536392] [2021-11-09 09:23:22,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464536392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:23:22,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:23:22,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 14 [2021-11-09 09:23:22,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506362927] [2021-11-09 09:23:22,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:23:22,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:23:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:23:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=159, Unknown=3, NotChecked=0, Total=210 [2021-11-09 09:23:22,033 INFO L87 Difference]: Start difference. First operand 244 states and 263 transitions. Second operand has 15 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 6 states have call successors, (15), 7 states have call predecessors, (15), 5 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9)