./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 --- 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-2329fc7 [2022-12-13 21:36:45,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:36:45,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:36:45,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:36:45,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:36:45,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:36:45,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:36:45,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:36:45,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:36:45,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:36:45,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:36:45,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:36:45,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:36:45,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:36:45,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:36:45,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:36:45,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:36:45,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:36:45,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:36:45,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:36:45,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:36:45,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:36:45,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:36:45,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:36:45,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:36:45,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:36:45,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:36:45,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:36:45,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:36:45,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:36:45,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:36:45,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:36:45,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:36:45,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:36:45,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:36:45,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:36:45,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:36:45,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:36:45,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:36:45,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:36:45,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:36:45,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:36:45,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:36:45,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:36:45,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:36:45,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:36:45,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:36:45,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:36:45,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:36:45,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:36:45,760 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:36:45,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:36:45,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:36:45,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:36:45,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:36:45,761 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:36:45,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:36:45,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:36:45,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:36:45,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:36:45,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:36:45,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:36:45,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:36:45,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:36:45,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:36:45,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:36:45,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:36:45,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:36:45,764 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c2ed91303515fb47ae50633bb4ba0c83e07781b13d03a95e0e32251f9fc3016 [2022-12-13 21:36:45,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:36:45,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:36:45,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:36:45,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:36:45,970 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:36:45,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-simple/dll2c_remove_all.i [2022-12-13 21:36:48,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:36:48,713 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:36:48,714 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/sv-benchmarks/c/list-simple/dll2c_remove_all.i [2022-12-13 21:36:48,724 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/data/7cdca4e8e/23d37134e92348639fa51ac82dd7c7d8/FLAG04d1feeea [2022-12-13 21:36:49,061 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/data/7cdca4e8e/23d37134e92348639fa51ac82dd7c7d8 [2022-12-13 21:36:49,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:36:49,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:36:49,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:36:49,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:36:49,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:36:49,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682609e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49, skipping insertion in model container [2022-12-13 21:36:49,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:36:49,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:36:49,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2022-12-13 21:36:49,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:36:49,349 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:36:49,384 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/sv-benchmarks/c/list-simple/dll2c_remove_all.i[24169,24182] [2022-12-13 21:36:49,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:36:49,402 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:36:49,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49 WrapperNode [2022-12-13 21:36:49,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:36:49,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:36:49,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:36:49,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:36:49,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,432 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2022-12-13 21:36:49,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:36:49,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:36:49,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:36:49,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:36:49,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:36:49,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:36:49,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:36:49,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:36:49,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (1/1) ... [2022-12-13 21:36:49,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:36:49,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:49,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:36:49,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:36:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:36:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-13 21:36:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-13 21:36:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:36:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:36:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:36:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:36:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:36:49,611 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:36:49,613 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:36:49,784 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:36:49,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:36:49,788 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 21:36:49,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:36:49 BoogieIcfgContainer [2022-12-13 21:36:49,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:36:49,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:36:49,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:36:49,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:36:49,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:36:49" (1/3) ... [2022-12-13 21:36:49,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca93ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:36:49, skipping insertion in model container [2022-12-13 21:36:49,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:49" (2/3) ... [2022-12-13 21:36:49,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca93ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:36:49, skipping insertion in model container [2022-12-13 21:36:49,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:36:49" (3/3) ... [2022-12-13 21:36:49,796 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all.i [2022-12-13 21:36:49,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:36:49,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 21:36:49,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:36:49,849 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1631cb3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:36:49,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 21:36:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:36:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 21:36:49,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:49,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:49,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1950618186, now seen corresponding path program 1 times [2022-12-13 21:36:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:49,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522974723] [2022-12-13 21:36:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:50,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:50,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522974723] [2022-12-13 21:36:50,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522974723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:50,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:50,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:36:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008712534] [2022-12-13 21:36:50,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:36:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:36:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:36:50,232 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:36:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:50,309 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-12-13 21:36:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:36:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-13 21:36:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:50,319 INFO L225 Difference]: With dead ends: 58 [2022-12-13 21:36:50,319 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 21:36:50,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:36:50,325 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:50,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 21:36:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-12-13 21:36:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:36:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-13 21:36:50,356 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-12-13 21:36:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:50,357 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-13 21:36:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:36:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-13 21:36:50,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 21:36:50,358 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:50,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:50,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:36:50,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1863518756, now seen corresponding path program 1 times [2022-12-13 21:36:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:50,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349538096] [2022-12-13 21:36:50,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 21:36:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:50,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349538096] [2022-12-13 21:36:50,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349538096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:50,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:50,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:36:50,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860030746] [2022-12-13 21:36:50,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:36:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:36:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:36:50,508 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:50,569 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-12-13 21:36:50,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-12-13 21:36:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:50,570 INFO L225 Difference]: With dead ends: 36 [2022-12-13 21:36:50,570 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 21:36:50,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:36:50,572 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:50,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 21:36:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-12-13 21:36:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:36:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-12-13 21:36:50,578 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 20 [2022-12-13 21:36:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:50,578 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-12-13 21:36:50,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-12-13 21:36:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 21:36:50,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:50,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:36:50,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash -837300036, now seen corresponding path program 1 times [2022-12-13 21:36:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:50,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130983027] [2022-12-13 21:36:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:50,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130983027] [2022-12-13 21:36:50,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130983027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:50,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:50,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:36:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122141022] [2022-12-13 21:36:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:50,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:36:50,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:50,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:36:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:36:50,722 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:50,773 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-12-13 21:36:50,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:50,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-12-13 21:36:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:50,774 INFO L225 Difference]: With dead ends: 41 [2022-12-13 21:36:50,775 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 21:36:50,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:36:50,776 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:50,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 21:36:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-13 21:36:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:36:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-12-13 21:36:50,782 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 28 [2022-12-13 21:36:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:50,782 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-12-13 21:36:50,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-12-13 21:36:50,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:36:50,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:50,784 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:50,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:36:50,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 589184918, now seen corresponding path program 1 times [2022-12-13 21:36:50,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:50,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528193196] [2022-12-13 21:36:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 21:36:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 21:36:50,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:50,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528193196] [2022-12-13 21:36:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528193196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:50,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748383560] [2022-12-13 21:36:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:50,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:50,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:50,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:50,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:36:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:36:51,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 21:36:51,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:36:51,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748383560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:51,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:36:51,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-12-13 21:36:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467846682] [2022-12-13 21:36:51,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:51,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:36:51,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:36:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:36:51,123 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 21:36:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:51,148 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-12-13 21:36:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:51,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-12-13 21:36:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:51,149 INFO L225 Difference]: With dead ends: 59 [2022-12-13 21:36:51,149 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 21:36:51,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:36:51,151 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:51,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 58 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 21:36:51,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-13 21:36:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:36:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-12-13 21:36:51,157 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 32 [2022-12-13 21:36:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:51,157 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-13 21:36:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 21:36:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-13 21:36:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 21:36:51,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:51,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:51,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:36:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:51,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:51,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1648479749, now seen corresponding path program 1 times [2022-12-13 21:36:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:51,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639981747] [2022-12-13 21:36:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639981747] [2022-12-13 21:36:51,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639981747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:51,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020757666] [2022-12-13 21:36:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:51,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:51,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:51,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:51,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:36:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:36:51,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:51,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:36:51,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020757666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:51,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:36:51,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-12-13 21:36:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979412733] [2022-12-13 21:36:51,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:36:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:51,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:36:51,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:36:51,680 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:51,711 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-12-13 21:36:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:36:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-12-13 21:36:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:51,712 INFO L225 Difference]: With dead ends: 31 [2022-12-13 21:36:51,712 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 21:36:51,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:36:51,713 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:51,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 21:36:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 21:36:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:36:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-12-13 21:36:51,718 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2022-12-13 21:36:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-12-13 21:36:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-12-13 21:36:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 21:36:51,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:51,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:51,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:36:51,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:51,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash 436735415, now seen corresponding path program 1 times [2022-12-13 21:36:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:51,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39256976] [2022-12-13 21:36:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:52,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39256976] [2022-12-13 21:36:52,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39256976] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943851592] [2022-12-13 21:36:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:52,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:52,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:52,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:52,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:36:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:36:52,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:52,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:36:52,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943851592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:52,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:52,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-12-13 21:36:52,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079492392] [2022-12-13 21:36:52,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:52,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:36:52,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:52,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:36:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:36:52,318 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:52,395 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-12-13 21:36:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:36:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2022-12-13 21:36:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:52,396 INFO L225 Difference]: With dead ends: 46 [2022-12-13 21:36:52,396 INFO L226 Difference]: Without dead ends: 45 [2022-12-13 21:36:52,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:36:52,397 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:52,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 105 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-12-13 21:36:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-12-13 21:36:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 21:36:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-12-13 21:36:52,401 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 34 [2022-12-13 21:36:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:52,401 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-12-13 21:36:52,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:36:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-12-13 21:36:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 21:36:52,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:52,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:52,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:36:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 21:36:52,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 21:36:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1848182698, now seen corresponding path program 2 times [2022-12-13 21:36:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087713097] [2022-12-13 21:36:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 21:36:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:36:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 21:36:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:52,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087713097] [2022-12-13 21:36:52,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087713097] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:52,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850842543] [2022-12-13 21:36:52,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:36:52,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:52,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:52,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:36:52,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:36:52,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:52,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:36:52,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 21:36:53,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 21:36:53,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850842543] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:53,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:53,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-12-13 21:36:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673165949] [2022-12-13 21:36:53,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:53,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:36:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:53,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:36:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:36:53,095 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:36:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:53,151 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-12-13 21:36:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:53,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2022-12-13 21:36:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:53,151 INFO L225 Difference]: With dead ends: 45 [2022-12-13 21:36:53,151 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 21:36:53,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:36:53,153 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:53,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 111 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:36:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 21:36:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 21:36:53,154 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) [2022-12-13 21:36:53,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 21:36:53,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2022-12-13 21:36:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:53,154 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:36:53,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:36:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 21:36:53,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 21:36:53,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-12-13 21:36:53,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-12-13 21:36:53,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-12-13 21:36:53,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-12-13 21:36:53,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:36:53,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:53,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 21:36:53,499 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 621) no Hoare annotation was computed. [2022-12-13 21:36:53,499 INFO L899 garLoopResultBuilder]: For program point L601(lines 601 613) no Hoare annotation was computed. [2022-12-13 21:36:53,499 INFO L895 garLoopResultBuilder]: At program point L589(line 589) the Hoare annotation is: (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2)) [2022-12-13 21:36:53,499 INFO L899 garLoopResultBuilder]: For program point L589-1(line 589) no Hoare annotation was computed. [2022-12-13 21:36:53,499 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 614 629) the Hoare annotation is: true [2022-12-13 21:36:53,500 INFO L895 garLoopResultBuilder]: At program point dll_circular_create_returnLabel#1(lines 585 600) the Hoare annotation is: (and (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1)) [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 595) no Hoare annotation was computed. [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point L623(lines 623 625) no Hoare annotation was computed. [2022-12-13 21:36:53,500 INFO L895 garLoopResultBuilder]: At program point L586(line 586) the Hoare annotation is: (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2)) [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point L586-1(line 586) no Hoare annotation was computed. [2022-12-13 21:36:53,500 INFO L895 garLoopResultBuilder]: At program point L619-2(lines 619 622) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse1 (<= |ULTIMATE.start_dll_circular_create_~len#1| 1))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) (< |ULTIMATE.start_main_~i~0#1| 2147483647) .cse0 .cse1))) [2022-12-13 21:36:53,500 INFO L899 garLoopResultBuilder]: For program point L619-3(lines 619 622) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 595) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point L603(lines 603 612) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point L595(line 595) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point L595-1(line 595) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point L591(lines 591 593) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point L591-2(lines 591 593) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 21:36:53,501 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 621) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L902 garLoopResultBuilder]: At program point main_ERROR#1(lines 614 629) the Hoare annotation is: true [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point L621-1(line 621) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L895 garLoopResultBuilder]: At program point L588-2(lines 588 596) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~len~0#1| 2))) (or (and .cse0 (<= |ULTIMATE.start_dll_circular_create_~len#1| 1)) (and (= 2 |ULTIMATE.start_dll_circular_create_~len#1|) .cse0))) [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point L588-3(lines 588 596) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point L577(lines 577 579) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point L577-1(lines 577 579) no Hoare annotation was computed. [2022-12-13 21:36:53,502 INFO L902 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: true [2022-12-13 21:36:53,502 INFO L899 garLoopResultBuilder]: For program point node_createFINAL(lines 575 584) no Hoare annotation was computed. [2022-12-13 21:36:53,503 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 575 584) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-12-13 21:36:53,503 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 575 584) no Hoare annotation was computed. [2022-12-13 21:36:53,506 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-13 21:36:53,508 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:36:53,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:36:53 BoogieIcfgContainer [2022-12-13 21:36:53,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:36:53,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:36:53,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:36:53,519 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:36:53,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:36:49" (3/4) ... [2022-12-13 21:36:53,522 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:36:53,528 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2022-12-13 21:36:53,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-13 21:36:53,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 21:36:53,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:36:53,531 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:36:53,557 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:36:53,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:36:53,558 INFO L158 Benchmark]: Toolchain (without parser) took 4494.28ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 106.8MB in the beginning and 61.0MB in the end (delta: 45.7MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,558 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:36:53,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.55ms. Allocated memory is still 140.5MB. Free memory was 106.8MB in the beginning and 89.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.58ms. Allocated memory is still 140.5MB. Free memory was 89.5MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,559 INFO L158 Benchmark]: Boogie Preprocessor took 25.98ms. Allocated memory is still 140.5MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,559 INFO L158 Benchmark]: RCFGBuilder took 330.84ms. Allocated memory is still 140.5MB. Free memory was 85.8MB in the beginning and 69.9MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,559 INFO L158 Benchmark]: TraceAbstraction took 3727.24ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 69.0MB in the beginning and 64.2MB in the end (delta: 4.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,560 INFO L158 Benchmark]: Witness Printer took 38.25ms. Allocated memory is still 169.9MB. Free memory was 64.2MB in the beginning and 61.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:36:53,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.55ms. Allocated memory is still 140.5MB. Free memory was 106.8MB in the beginning and 89.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.58ms. Allocated memory is still 140.5MB. Free memory was 89.5MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.98ms. Allocated memory is still 140.5MB. Free memory was 87.4MB in the beginning and 85.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.84ms. Allocated memory is still 140.5MB. Free memory was 85.8MB in the beginning and 69.9MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3727.24ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 69.0MB in the beginning and 64.2MB in the end (delta: 4.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Witness Printer took 38.25ms. Allocated memory is still 169.9MB. Free memory was 64.2MB in the beginning and 61.0MB 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: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 595]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 621]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 621]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 85 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 613 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 429 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 213 IncrementalHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 184 mSDtfsCounter, 213 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=6, InterpolantAutomatonStates: 43, 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 13 PreInvPairs, 23 NumberOfFragments, 79 HoareAnnotationTreeSize, 13 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 360 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 1028 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 206/274 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 4 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: len == 2 && len <= 1 - InvariantResult [Line: 619]: Loop Invariant Derived loop invariant: ((i == 0 && len == 2) && len <= 1) || (((1 <= i && i < 2147483647) && len == 2) && len <= 1) - InvariantResult [Line: 614]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 614]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: (len == 2 && len <= 1) || (2 == len && len == 2) - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 21:36:53,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a51263f-ee14-49ba-9154-3c4dbdc6f2e0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE