./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN --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 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:02:31,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:02:31,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:02:31,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:02:31,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:02:31,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:02:31,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:02:31,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:02:31,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:02:31,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:02:31,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:02:31,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:02:31,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:02:31,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:02:31,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:02:31,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:02:31,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:02:31,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:02:31,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:02:31,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:02:31,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:02:31,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:02:31,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:02:31,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:02:31,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:02:31,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:02:31,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:02:31,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:02:31,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:02:31,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:02:31,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:02:31,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:02:31,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:02:31,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:02:31,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:02:31,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:02:31,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:02:31,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:02:31,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:02:31,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:02:31,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:02:31,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:02:31,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:02:31,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:02:31,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:02:31,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:02:31,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:02:31,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:02:31,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:02:31,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:02:31,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:02:31,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:02:31,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:02:31,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:02:31,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:02:31,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:02:31,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:02:31,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:02:31,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:02:31,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:02:31,652 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:02:31,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:02:31,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:02:31,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:02:31,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:02:31,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:02:31,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:02:31,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:02:31,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:02:31,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:02:31,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:02:31,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:02:31,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:02:31,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:02:31,656 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:02:31,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:02:31,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:02:31,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 [2022-11-20 12:02:31,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:02:32,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:02:32,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:02:32,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:02:32,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:02:32,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2022-11-20 12:02:35,992 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:02:36,333 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:02:36,334 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2022-11-20 12:02:36,352 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/data/b27f0b828/555ce426b81e4a69b63b9db23ada3533/FLAGa4a02474a [2022-11-20 12:02:36,378 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/data/b27f0b828/555ce426b81e4a69b63b9db23ada3533 [2022-11-20 12:02:36,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:02:36,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:02:36,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:02:36,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:02:36,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:02:36,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:02:36" (1/1) ... [2022-11-20 12:02:36,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4892c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:36, skipping insertion in model container [2022-11-20 12:02:36,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:02:36" (1/1) ... [2022-11-20 12:02:36,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:02:36,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:02:36,907 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_a4fff6a5-6454-49ad-9322-355ec8edd183/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2022-11-20 12:02:36,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:02:36,930 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:02:37,014 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_a4fff6a5-6454-49ad-9322-355ec8edd183/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2022-11-20 12:02:37,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:02:37,060 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:02:37,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37 WrapperNode [2022-11-20 12:02:37,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:02:37,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:02:37,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:02:37,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:02:37,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,137 INFO L138 Inliner]: procedures = 126, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2022-11-20 12:02:37,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:02:37,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:02:37,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:02:37,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:02:37,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,188 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:02:37,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:02:37,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:02:37,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:02:37,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (1/1) ... [2022-11-20 12:02:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:02:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:37,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:02:37,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:02:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:02:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-20 12:02:37,305 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-20 12:02:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:02:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:02:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:02:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:02:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:02:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:02:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:02:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:02:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:02:37,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:02:37,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:02:37,516 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:02:37,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:02:37,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:02:37,842 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:02:37,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:37 BoogieIcfgContainer [2022-11-20 12:02:37,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:02:37,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:02:37,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:02:37,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:02:37,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:02:36" (1/3) ... [2022-11-20 12:02:37,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28fd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:02:37, skipping insertion in model container [2022-11-20 12:02:37,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:02:37" (2/3) ... [2022-11-20 12:02:37,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28fd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:02:37, skipping insertion in model container [2022-11-20 12:02:37,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:37" (3/3) ... [2022-11-20 12:02:37,868 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2022-11-20 12:02:37,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:02:37,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-20 12:02:37,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:02:38,006 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;@60fbc412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:02:38,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-20 12:02:38,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 35 states have internal predecessors, (46), 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) [2022-11-20 12:02:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:02:38,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:38,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:38,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 12:02:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1920144545, now seen corresponding path program 1 times [2022-11-20 12:02:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:38,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248472093] [2022-11-20 12:02:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:38,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:02:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:38,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248472093] [2022-11-20 12:02:38,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248472093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:38,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:38,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:02:38,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620743812] [2022-11-20 12:02:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:38,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:02:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:02:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:02:39,011 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 35 states have internal predecessors, (46), 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 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 12:02:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:39,173 INFO L93 Difference]: Finished difference Result 68 states and 89 transitions. [2022-11-20 12:02:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:02:39,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2022-11-20 12:02:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:39,188 INFO L225 Difference]: With dead ends: 68 [2022-11-20 12:02:39,188 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 12:02:39,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:02:39,197 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 137 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:02:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 12:02:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-20 12:02:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 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) [2022-11-20 12:02:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-20 12:02:39,253 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 18 [2022-11-20 12:02:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-20 12:02:39,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-20 12:02:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-20 12:02:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:02:39,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:39,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:39,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:02:39,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 12:02:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash -605061200, now seen corresponding path program 1 times [2022-11-20 12:02:39,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:39,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444211831] [2022-11-20 12:02:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:02:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:39,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444211831] [2022-11-20 12:02:39,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444211831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:39,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:39,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:02:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824149866] [2022-11-20 12:02:39,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:39,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:02:39,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:02:39,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:02:39,521 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 12:02:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:39,614 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-20 12:02:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:02:39,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2022-11-20 12:02:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:39,617 INFO L225 Difference]: With dead ends: 38 [2022-11-20 12:02:39,617 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 12:02:39,618 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 [2022-11-20 12:02:39,620 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:39,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:02:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 12:02:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 12:02:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 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) [2022-11-20 12:02:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-20 12:02:39,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 19 [2022-11-20 12:02:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:39,631 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-20 12:02:39,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 12:02:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-20 12:02:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:02:39,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:39,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:02:39,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 12:02:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1840517303, now seen corresponding path program 1 times [2022-11-20 12:02:39,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:39,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301959309] [2022-11-20 12:02:39,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 12:02:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:02:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:39,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301959309] [2022-11-20 12:02:39,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301959309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:02:39,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937249738] [2022-11-20 12:02:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:39,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:39,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:02:39,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:02:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:40,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:02:40,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:02:40,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:02:40,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937249738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:40,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:02:40,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-20 12:02:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040081907] [2022-11-20 12:02:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:02:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:02:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:02:40,313 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-20 12:02:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:40,378 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-20 12:02:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:02:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 28 [2022-11-20 12:02:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:40,386 INFO L225 Difference]: With dead ends: 59 [2022-11-20 12:02:40,386 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:02:40,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:02:40,388 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:40,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 74 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:02:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:02:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 12:02:40,395 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) [2022-11-20 12:02:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-11-20 12:02:40,396 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 28 [2022-11-20 12:02:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:40,397 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-11-20 12:02:40,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-20 12:02:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-11-20 12:02:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 12:02:40,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:40,403 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, 1, 1] [2022-11-20 12:02:40,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:40,613 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 12:02:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:40,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1971486714, now seen corresponding path program 1 times [2022-11-20 12:02:40,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:40,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199050410] [2022-11-20 12:02:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:40,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:40,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:40,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199050410] [2022-11-20 12:02:40,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199050410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:40,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:02:40,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:02:40,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737908169] [2022-11-20 12:02:40,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:02:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:02:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:02:40,815 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-20 12:02:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:40,921 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-20 12:02:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:02:40,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 30 [2022-11-20 12:02:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:40,923 INFO L225 Difference]: With dead ends: 45 [2022-11-20 12:02:40,924 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 12:02:40,924 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 [2022-11-20 12:02:40,926 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:40,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:02:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 12:02:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-20 12:02:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 39 states have internal predecessors, (46), 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) [2022-11-20 12:02:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-20 12:02:40,936 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 30 [2022-11-20 12:02:40,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:40,937 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-20 12:02:40,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-20 12:02:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-20 12:02:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 12:02:40,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:40,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-11-20 12:02:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:02:40,940 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)] === [2022-11-20 12:02:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash -226575923, now seen corresponding path program 1 times [2022-11-20 12:02:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:40,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037511536] [2022-11-20 12:02:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:40,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:41,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037511536] [2022-11-20 12:02:41,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037511536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:02:41,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425382395] [2022-11-20 12:02:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:41,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:41,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:41,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:02:41,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:02:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:41,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:02:41,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:41,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:02:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:41,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425382395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:02:41,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:02:41,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-11-20 12:02:41,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749803787] [2022-11-20 12:02:41,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:02:41,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:02:41,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:41,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:02:41,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:02:41,585 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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) [2022-11-20 12:02:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:41,780 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2022-11-20 12:02:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:02:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 39 [2022-11-20 12:02:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:41,782 INFO L225 Difference]: With dead ends: 83 [2022-11-20 12:02:41,783 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 12:02:41,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:02:41,784 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 62 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:41,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 189 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:02:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 12:02:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2022-11-20 12:02:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 74 states have internal predecessors, (92), 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) [2022-11-20 12:02:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2022-11-20 12:02:41,796 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 39 [2022-11-20 12:02:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:41,797 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2022-11-20 12:02:41,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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) [2022-11-20 12:02:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2022-11-20 12:02:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 12:02:41,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:41,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:41,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:42,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:42,006 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)] === [2022-11-20 12:02:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1566081083, now seen corresponding path program 1 times [2022-11-20 12:02:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:42,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340010951] [2022-11-20 12:02:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:42,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340010951] [2022-11-20 12:02:42,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340010951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:02:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816777349] [2022-11-20 12:02:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:42,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:42,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:42,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:02:42,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:02:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:42,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:02:42,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:02:42,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:02:42,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816777349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:02:42,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:02:42,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-11-20 12:02:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25950236] [2022-11-20 12:02:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:02:42,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:02:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:02:42,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:02:42,540 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2022-11-20 12:02:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:42,600 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-20 12:02:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:02:42,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 40 [2022-11-20 12:02:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:42,602 INFO L225 Difference]: With dead ends: 78 [2022-11-20 12:02:42,602 INFO L226 Difference]: Without dead ends: 77 [2022-11-20 12:02:42,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:02:42,604 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:42,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:02:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-20 12:02:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-20 12:02:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 73 states have internal predecessors, (89), 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) [2022-11-20 12:02:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2022-11-20 12:02:42,615 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 40 [2022-11-20 12:02:42,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:42,616 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2022-11-20 12:02:42,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2022-11-20 12:02:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2022-11-20 12:02:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:02:42,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:42,619 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:42,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:42,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-20 12:02:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2035983034, now seen corresponding path program 2 times [2022-11-20 12:02:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373256270] [2022-11-20 12:02:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:02:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:02:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 12:02:43,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:02:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373256270] [2022-11-20 12:02:43,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373256270] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:02:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781570778] [2022-11-20 12:02:43,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:02:43,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:43,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:02:43,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:02:43,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:02:43,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:02:43,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:02:43,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:02:43,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 12:02:43,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:02:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 12:02:43,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781570778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:02:43,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:02:43,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-20 12:02:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507584398] [2022-11-20 12:02:43,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:02:43,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:02:43,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:02:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:02:43,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:02:43,744 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2022-11-20 12:02:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:43,869 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2022-11-20 12:02:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:02:43,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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 66 [2022-11-20 12:02:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:43,870 INFO L225 Difference]: With dead ends: 77 [2022-11-20 12:02:43,870 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:02:43,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:02:43,872 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:43,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 119 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:02:43,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:02:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:02:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:02:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:02:43,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2022-11-20 12:02:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:43,874 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:02:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2022-11-20 12:02:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:02:43,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:02:43,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-20 12:02:43,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-20 12:02:43,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-20 12:02:43,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-20 12:02:43,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:02:44,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:02:44,246 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 617) no Hoare annotation was computed. [2022-11-20 12:02:44,246 INFO L899 garLoopResultBuilder]: For program point L605-1(lines 605 607) no Hoare annotation was computed. [2022-11-20 12:02:44,247 INFO L895 garLoopResultBuilder]: At program point L605-3(lines 605 607) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~len~0#1| 2)) (.cse1 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1))) (or (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 1)) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1))) [2022-11-20 12:02:44,247 INFO L899 garLoopResultBuilder]: For program point L605-4(lines 605 607) no Hoare annotation was computed. [2022-11-20 12:02:44,247 INFO L899 garLoopResultBuilder]: For program point L597-1(lines 597 599) no Hoare annotation was computed. [2022-11-20 12:02:44,247 INFO L895 garLoopResultBuilder]: At program point L597-3(lines 597 599) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~len~0#1| 2)) (.cse1 (<= |ULTIMATE.start_sll_circular_create_~len#1| 1))) (or (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~i~0#1| 1)) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1))) [2022-11-20 12:02:44,247 INFO L895 garLoopResultBuilder]: At program point L593(lines 583 594) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) [2022-11-20 12:02:44,247 INFO L899 garLoopResultBuilder]: For program point L597-4(lines 597 599) no Hoare annotation was computed. [2022-11-20 12:02:44,247 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:02:44,248 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 590) no Hoare annotation was computed. [2022-11-20 12:02:44,248 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:02:44,248 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:02:44,248 INFO L899 garLoopResultBuilder]: For program point L590(line 590) no Hoare annotation was computed. [2022-11-20 12:02:44,248 INFO L899 garLoopResultBuilder]: For program point L590-1(line 590) no Hoare annotation was computed. [2022-11-20 12:02:44,250 INFO L895 garLoopResultBuilder]: At program point L586-2(lines 586 591) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_sll_circular_create_~len#1| 1)) (and (= 2 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|))) [2022-11-20 12:02:44,253 INFO L899 garLoopResultBuilder]: For program point L586-3(lines 586 591) no Hoare annotation was computed. [2022-11-20 12:02:44,254 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 590) no Hoare annotation was computed. [2022-11-20 12:02:44,255 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:02:44,255 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 611) no Hoare annotation was computed. [2022-11-20 12:02:44,255 INFO L899 garLoopResultBuilder]: For program point L620(lines 620 622) no Hoare annotation was computed. [2022-11-20 12:02:44,256 INFO L895 garLoopResultBuilder]: At program point L587(line 587) the Hoare annotation is: (and (= 2 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|)) [2022-11-20 12:02:44,256 INFO L899 garLoopResultBuilder]: For program point L587-1(line 587) no Hoare annotation was computed. [2022-11-20 12:02:44,256 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 617) no Hoare annotation was computed. [2022-11-20 12:02:44,256 INFO L899 garLoopResultBuilder]: For program point L600(lines 600 610) no Hoare annotation was computed. [2022-11-20 12:02:44,257 INFO L902 garLoopResultBuilder]: At program point L625(lines 612 626) the Hoare annotation is: true [2022-11-20 12:02:44,257 INFO L902 garLoopResultBuilder]: At program point L621(lines 612 626) the Hoare annotation is: true [2022-11-20 12:02:44,257 INFO L895 garLoopResultBuilder]: At program point L584(line 584) the Hoare annotation is: (and (= 2 |ULTIMATE.start_sll_circular_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_circular_create_~len#1|)) [2022-11-20 12:02:44,257 INFO L899 garLoopResultBuilder]: For program point L584-1(line 584) no Hoare annotation was computed. [2022-11-20 12:02:44,258 INFO L899 garLoopResultBuilder]: For program point L617-2(lines 617 619) no Hoare annotation was computed. [2022-11-20 12:02:44,258 INFO L899 garLoopResultBuilder]: For program point L617-3(line 617) no Hoare annotation was computed. [2022-11-20 12:02:44,258 INFO L899 garLoopResultBuilder]: For program point L617-4(line 617) no Hoare annotation was computed. [2022-11-20 12:02:44,258 INFO L895 garLoopResultBuilder]: At program point L617-5(lines 617 619) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~len~0#1| 2)) (.cse1 (<= |ULTIMATE.start_sll_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))) [2022-11-20 12:02:44,258 INFO L899 garLoopResultBuilder]: For program point L617-6(lines 617 619) no Hoare annotation was computed. [2022-11-20 12:02:44,259 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2022-11-20 12:02:44,259 INFO L899 garLoopResultBuilder]: For program point L576-1(lines 576 578) no Hoare annotation was computed. [2022-11-20 12:02:44,259 INFO L902 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2022-11-20 12:02:44,259 INFO L895 garLoopResultBuilder]: At program point node_createENTRY(lines 574 582) 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|)) [2022-11-20 12:02:44,259 INFO L899 garLoopResultBuilder]: For program point node_createFINAL(lines 574 582) no Hoare annotation was computed. [2022-11-20 12:02:44,260 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 574 582) no Hoare annotation was computed. [2022-11-20 12:02:44,263 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-11-20 12:02:44,266 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:02:44,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:02:44 BoogieIcfgContainer [2022-11-20 12:02:44,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:02:44,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:02:44,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:02:44,290 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:02:44,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:02:37" (3/4) ... [2022-11-20 12:02:44,294 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:02:44,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2022-11-20 12:02:44,309 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 12:02:44,310 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 12:02:44,310 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:02:44,310 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:02:44,368 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:02:44,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:02:44,369 INFO L158 Benchmark]: Toolchain (without parser) took 7978.76ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 108.2MB in the beginning and 81.3MB in the end (delta: 26.9MB). Peak memory consumption was 99.9MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,370 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:02:44,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.14ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 91.5MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.15ms. Allocated memory is still 155.2MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,371 INFO L158 Benchmark]: Boogie Preprocessor took 65.92ms. Allocated memory is still 155.2MB. Free memory was 89.4MB in the beginning and 87.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,371 INFO L158 Benchmark]: RCFGBuilder took 640.17ms. Allocated memory is still 155.2MB. Free memory was 87.3MB in the beginning and 72.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,372 INFO L158 Benchmark]: TraceAbstraction took 6439.53ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 71.6MB in the beginning and 84.5MB in the end (delta: -12.9MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,372 INFO L158 Benchmark]: Witness Printer took 79.42ms. Allocated memory is still 226.5MB. Free memory was 84.5MB in the beginning and 81.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:02:44,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 667.14ms. Allocated memory is still 155.2MB. Free memory was 108.2MB in the beginning and 91.5MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.15ms. Allocated memory is still 155.2MB. Free memory was 91.5MB in the beginning and 89.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.92ms. Allocated memory is still 155.2MB. Free memory was 89.4MB in the beginning and 87.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 640.17ms. Allocated memory is still 155.2MB. Free memory was 87.3MB in the beginning and 72.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6439.53ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 71.6MB in the beginning and 84.5MB in the end (delta: -12.9MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. * Witness Printer took 79.42ms. Allocated memory is still 226.5MB. Free memory was 84.5MB in the beginning and 81.3MB 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: 590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 617]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 617]: 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, 39 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 873 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 645 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 276 IncrementalHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 228 mSDtfsCounter, 276 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 347 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 33 NumberOfFragments, 127 HoareAnnotationTreeSize, 15 FomulaSimplifications, 97 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 413 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 505 ConstructedInterpolants, 0 QuantifiedInterpolants, 1322 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1119 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 283/402 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: 597]: Loop Invariant Derived loop invariant: (((1 <= i && len <= 2) && len <= 1) && i <= 1) || ((i == 0 && len <= 2) && len <= 1) - InvariantResult [Line: 612]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: (len <= 2 && len <= 1) || (2 == len && len == len) - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: ((i == 0 && len <= 2) && len <= 1) || (((1 <= i && i < 2147483647) && len <= 2) && len <= 1) - InvariantResult [Line: 612]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: len <= 2 && len <= 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: (((1 <= i && len <= 2) && len <= 1) && i <= 1) || ((i == 0 && len <= 2) && len <= 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 12:02:44,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4fff6a5-6454-49ad-9322-355ec8edd183/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE