./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b459ef52e6f503a483dfcee5782d400696002c8f6100462cc05f5e2316fe0d4b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:55:23,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:55:23,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:55:23,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:55:23,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:55:23,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:55:23,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:55:23,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:55:23,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:55:23,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:55:23,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:55:23,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:55:23,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:55:23,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:55:23,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:55:23,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:55:23,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:55:23,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:55:23,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:55:23,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:55:23,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:55:23,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:55:23,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:55:23,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:55:23,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:55:23,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:55:23,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:55:23,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:55:23,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:55:23,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:55:23,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:55:23,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:55:23,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:55:23,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:55:23,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:55:23,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:55:23,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:55:23,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:55:23,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:55:23,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:55:23,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:55:23,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-20 10:55:23,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:55:23,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:55:23,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:55:23,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:55:23,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:55:23,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:55:23,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:55:23,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:55:23,716 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:55:23,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:55:23,717 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:55:23,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:55:23,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:55:23,718 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 10:55:23,718 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 10:55:23,718 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 10:55:23,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:55:23,719 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:55:23,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:55:23,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:55:23,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:55:23,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:55:23,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:23,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:55:23,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:55:23,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:55:23,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:55:23,721 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_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b459ef52e6f503a483dfcee5782d400696002c8f6100462cc05f5e2316fe0d4b [2022-11-20 10:55:24,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:55:24,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:55:24,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:55:24,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:55:24,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:55:24,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i [2022-11-20 10:55:27,195 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:55:27,446 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:55:27,447 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/sv-benchmarks/c/termination-memory-alloca/b.09-no-inv_assume-alloca.i [2022-11-20 10:55:27,458 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/data/4587b4879/cad42f1d111443bcb99b0b0ba04fde85/FLAGa907aabc0 [2022-11-20 10:55:27,483 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/data/4587b4879/cad42f1d111443bcb99b0b0ba04fde85 [2022-11-20 10:55:27,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:55:27,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:55:27,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:27,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:55:27,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:55:27,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:27" (1/1) ... [2022-11-20 10:55:27,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fec6381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:27, skipping insertion in model container [2022-11-20 10:55:27,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:27" (1/1) ... [2022-11-20 10:55:27,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:55:27,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:55:27,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:27,936 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:55:27,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:55:28,030 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:55:28,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28 WrapperNode [2022-11-20 10:55:28,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:55:28,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:28,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:55:28,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:55:28,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,094 INFO L138 Inliner]: procedures = 111, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-20 10:55:28,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:55:28,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:55:28,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:55:28,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:55:28,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:55:28,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:55:28,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:55:28,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:55:28,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (1/1) ... [2022-11-20 10:55:28,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:55:28,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:28,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:55:28,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:55:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:55:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:55:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:55:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:55:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:55:28,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:55:28,384 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:55:28,387 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:55:28,700 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:55:28,711 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:55:28,712 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:55:28,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:28 BoogieIcfgContainer [2022-11-20 10:55:28,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:55:28,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:55:28,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:55:28,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:55:28,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:27" (1/3) ... [2022-11-20 10:55:28,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13966d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:28, skipping insertion in model container [2022-11-20 10:55:28,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:28" (2/3) ... [2022-11-20 10:55:28,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13966d7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:28, skipping insertion in model container [2022-11-20 10:55:28,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:28" (3/3) ... [2022-11-20 10:55:28,738 INFO L112 eAbstractionObserver]: Analyzing ICFG b.09-no-inv_assume-alloca.i [2022-11-20 10:55:28,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:55:28,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-20 10:55:28,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:55:28,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b50cb23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:55:28,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-20 10:55:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 30 states have (on average 2.2) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:55:28,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:28,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:55:28,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:28,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:28,833 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-20 10:55:28,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:28,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089706827] [2022-11-20 10:55:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:29,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089706827] [2022-11-20 10:55:29,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089706827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:29,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:29,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:29,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336050644] [2022-11-20 10:55:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:29,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:29,491 INFO L87 Difference]: Start difference. First operand has 62 states, 30 states have (on average 2.2) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:29,590 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-11-20 10:55:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:55:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:29,601 INFO L225 Difference]: With dead ends: 55 [2022-11-20 10:55:29,602 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 10:55:29,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:29,608 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:29,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:55:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 10:55:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-20 10:55:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.9310344827586208) internal successors, (56), 52 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-11-20 10:55:29,648 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 3 [2022-11-20 10:55:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:29,648 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-11-20 10:55:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-11-20 10:55:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 10:55:29,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:29,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 10:55:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:55:29,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-20 10:55:29,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035112055] [2022-11-20 10:55:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:29,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:29,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035112055] [2022-11-20 10:55:29,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035112055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:29,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:29,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440123562] [2022-11-20 10:55:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:29,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:29,907 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:30,022 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-20 10:55:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 10:55:30,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:30,025 INFO L225 Difference]: With dead ends: 46 [2022-11-20 10:55:30,025 INFO L226 Difference]: Without dead ends: 46 [2022-11-20 10:55:30,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,032 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:30,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:55:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-20 10:55:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-20 10:55:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 45 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-11-20 10:55:30,043 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 3 [2022-11-20 10:55:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:30,043 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-11-20 10:55:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-11-20 10:55:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:55:30,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:30,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:55:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:55:30,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2022-11-20 10:55:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600749842] [2022-11-20 10:55:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600749842] [2022-11-20 10:55:30,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600749842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:30,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:30,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516263758] [2022-11-20 10:55:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:30,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:30,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:30,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,214 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:30,282 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-20 10:55:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:55:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:30,284 INFO L225 Difference]: With dead ends: 42 [2022-11-20 10:55:30,285 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 10:55:30,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,295 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:30,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 21 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:55:30,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 10:55:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-20 10:55:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-11-20 10:55:30,305 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 4 [2022-11-20 10:55:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:30,305 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-11-20 10:55:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-11-20 10:55:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 10:55:30,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:30,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 10:55:30,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:55:30,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:30,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2022-11-20 10:55:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776476229] [2022-11-20 10:55:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776476229] [2022-11-20 10:55:30,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776476229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:30,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:30,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:30,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894986927] [2022-11-20 10:55:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:30,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,449 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:30,486 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-11-20 10:55:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 10:55:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:30,488 INFO L225 Difference]: With dead ends: 38 [2022-11-20 10:55:30,488 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 10:55:30,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,489 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:30,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:55:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 10:55:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 10:55:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-11-20 10:55:30,494 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 4 [2022-11-20 10:55:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:30,495 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-11-20 10:55:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-11-20 10:55:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:55:30,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:30,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:55:30,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:55:30,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:30,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2022-11-20 10:55:30,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216759019] [2022-11-20 10:55:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:30,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216759019] [2022-11-20 10:55:30,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216759019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:30,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:30,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176212316] [2022-11-20 10:55:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:30,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:30,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,567 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:30,609 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-20 10:55:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:30,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:55:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:30,610 INFO L225 Difference]: With dead ends: 34 [2022-11-20 10:55:30,610 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 10:55:30,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,611 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:30,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:55:30,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 10:55:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 10:55:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-20 10:55:30,616 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 5 [2022-11-20 10:55:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:30,616 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-20 10:55:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-20 10:55:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:55:30,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:30,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:55:30,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:55:30,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2022-11-20 10:55:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634188586] [2022-11-20 10:55:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:30,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634188586] [2022-11-20 10:55:30,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634188586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:30,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:30,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:55:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944633127] [2022-11-20 10:55:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:30,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:55:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:55:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,689 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:30,717 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-11-20 10:55:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:55:30,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 10:55:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:30,718 INFO L225 Difference]: With dead ends: 30 [2022-11-20 10:55:30,719 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 10:55:30,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:55:30,720 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:30,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:55:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 10:55:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 10:55:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-20 10:55:30,723 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 5 [2022-11-20 10:55:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:30,724 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-20 10:55:30,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-20 10:55:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:55:30,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:30,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:55:30,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 10:55:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 231154034, now seen corresponding path program 1 times [2022-11-20 10:55:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583135533] [2022-11-20 10:55:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:31,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583135533] [2022-11-20 10:55:31,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583135533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:55:31,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:55:31,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:55:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582171621] [2022-11-20 10:55:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:55:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:55:31,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:55:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:31,240 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:31,303 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-11-20 10:55:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:55:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:55:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:31,304 INFO L225 Difference]: With dead ends: 29 [2022-11-20 10:55:31,304 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:55:31,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:55:31,307 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:31,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:55:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:55:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:55:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:55:31,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-20 10:55:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:31,309 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:55:31,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:55:31,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:55:31,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-20 10:55:31,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-20 10:55:31,313 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-20 10:55:31,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-20 10:55:31,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-20 10:55:31,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-11-20 10:55:31,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-20 10:55:31,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-20 10:55:31,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-20 10:55:31,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-20 10:55:31,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-20 10:55:31,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-20 10:55:31,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-20 10:55:31,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-20 10:55:31,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-20 10:55:31,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-20 10:55:31,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-20 10:55:31,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-20 10:55:31,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-20 10:55:31,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-20 10:55:31,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-20 10:55:31,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-20 10:55:31,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-20 10:55:31,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-20 10:55:31,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-20 10:55:31,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-20 10:55:31,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-20 10:55:31,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-20 10:55:31,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-20 10:55:31,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-20 10:55:31,320 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2022-11-20 10:55:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:55:31,323 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:31,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:55:31,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:55:31 BoogieIcfgContainer [2022-11-20 10:55:31,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:55:31,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:55:31,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:55:31,333 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:55:31,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:28" (3/4) ... [2022-11-20 10:55:31,338 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:55:31,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-20 10:55:31,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 10:55:31,352 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:55:31,355 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:55:31,406 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:55:31,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:55:31,408 INFO L158 Benchmark]: Toolchain (without parser) took 3920.41ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 103.7MB in the beginning and 90.6MB in the end (delta: 13.1MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,408 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 115.3MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:55:31,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.17ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 105.7MB in the end (delta: -2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.47ms. Allocated memory is still 144.7MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,410 INFO L158 Benchmark]: Boogie Preprocessor took 27.98ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 102.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,410 INFO L158 Benchmark]: RCFGBuilder took 600.13ms. Allocated memory is still 144.7MB. Free memory was 102.3MB in the beginning and 86.7MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,411 INFO L158 Benchmark]: TraceAbstraction took 2606.15ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.1MB in the beginning and 93.8MB in the end (delta: -7.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,412 INFO L158 Benchmark]: Witness Printer took 73.47ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 90.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:55:31,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 115.3MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.17ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 105.7MB in the end (delta: -2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.47ms. Allocated memory is still 144.7MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.98ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 102.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 600.13ms. Allocated memory is still 144.7MB. Free memory was 102.3MB in the beginning and 86.7MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2606.15ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 86.1MB in the beginning and 93.8MB in the end (delta: -7.7MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Witness Printer took 73.47ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 90.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 258 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 188 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 143 mSDtfsCounter, 188 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 10:55:31,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c513bbcb-5859-4ba9-84c6-fb2855df2e00/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE