./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:23:16,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:23:16,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:23:16,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:23:16,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:23:16,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:23:16,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:23:16,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:23:16,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:23:17,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:23:17,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:23:17,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:23:17,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:23:17,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:23:17,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:23:17,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:23:17,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:23:17,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:23:17,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:23:17,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:23:17,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:23:17,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:23:17,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:23:17,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:23:17,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:23:17,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:23:17,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:23:17,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:23:17,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:23:17,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:23:17,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:23:17,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:23:17,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:23:17,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:23:17,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:23:17,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:23:17,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:23:17,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:23:17,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:23:17,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:23:17,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:23:17,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:23:17,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:23:17,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:23:17,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:23:17,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:23:17,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:23:17,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:23:17,104 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:23:17,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:23:17,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:23:17,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:23:17,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:23:17,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:23:17,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:23:17,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:23:17,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:23:17,107 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:23:17,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:23:17,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:23:17,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:23:17,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:23:17,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:23:17,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:23:17,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:17,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:23:17,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:23:17,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:23:17,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:23:17,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:23:17,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:23:17,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:23:17,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:23:17,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:23:17,111 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_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 [2021-10-28 23:23:17,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:23:17,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:23:17,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:23:17,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:23:17,401 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:23:17,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2021-10-28 23:23:17,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/data/e2e9e7430/10cd03cf11ce4cdb896bffebe4e74735/FLAGb9aef60ef [2021-10-28 23:23:17,962 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:23:17,962 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2021-10-28 23:23:17,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/data/e2e9e7430/10cd03cf11ce4cdb896bffebe4e74735/FLAGb9aef60ef [2021-10-28 23:23:18,336 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/data/e2e9e7430/10cd03cf11ce4cdb896bffebe4e74735 [2021-10-28 23:23:18,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:23:18,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:23:18,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:18,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:23:18,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:23:18,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e4dcb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18, skipping insertion in model container [2021-10-28 23:23:18,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:23:18,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:23:18,557 WARN L228 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_e77a2058-832d-4471-9470-67971747d872/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2021-10-28 23:23:18,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:18,592 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:23:18,603 WARN L228 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_e77a2058-832d-4471-9470-67971747d872/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2021-10-28 23:23:18,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:18,625 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:23:18,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18 WrapperNode [2021-10-28 23:23:18,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:18,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:18,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:23:18,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:23:18,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:18,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:23:18,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:23:18,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:23:18,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:23:18,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:23:18,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:23:18,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:23:18,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (1/1) ... [2021-10-28 23:23:18,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:23:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:18,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:18,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:23:18,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:23:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:23:18,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:23:18,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:23:18,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:23:18,990 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-28 23:23:18,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:18 BoogieIcfgContainer [2021-10-28 23:23:18,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:23:18,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:23:18,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:23:18,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:23:19,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:23:18" (1/3) ... [2021-10-28 23:23:19,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd58d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:19, skipping insertion in model container [2021-10-28 23:23:19,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:18" (2/3) ... [2021-10-28 23:23:19,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd58d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:23:19, skipping insertion in model container [2021-10-28 23:23:19,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:18" (3/3) ... [2021-10-28 23:23:19,003 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2021-10-28 23:23:19,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:23:19,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 23:23:19,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:23:19,092 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:23:19,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 23:23:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 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) [2021-10-28 23:23:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:23:19,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:19,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:19,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-28 23:23:19,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:19,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143406918] [2021-10-28 23:23:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:19,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:19,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:19,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143406918] [2021-10-28 23:23:19,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143406918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:19,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:19,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:23:19,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266822657] [2021-10-28 23:23:19,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:23:19,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:19,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:23:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:23:19,321 INFO L87 Difference]: Start difference. First operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 23:23:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:19,336 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-10-28 23:23:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:23:19,338 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:23:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:19,346 INFO L225 Difference]: With dead ends: 39 [2021-10-28 23:23:19,346 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 23:23:19,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:23:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 23:23:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 23:23:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-28 23:23:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-28 23:23:19,381 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-10-28 23:23:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:19,382 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-28 23:23:19,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-28 23:23:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-28 23:23:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:23:19,383 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:19,383 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:19,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:23:19,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:19,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-28 23:23:19,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:19,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693704578] [2021-10-28 23:23:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:19,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:19,404 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:23:19,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926059704] [2021-10-28 23:23:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:19,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:19,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:19,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:23:19,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:23:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:19,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:23:19,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:19,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:19,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693704578] [2021-10-28 23:23:19,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:23:19,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926059704] [2021-10-28 23:23:19,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926059704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:19,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:19,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:23:19,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600757389] [2021-10-28 23:23:19,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:23:19,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:23:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:23:19,655 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-28 23:23:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:19,710 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-10-28 23:23:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:23:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:23:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:19,711 INFO L225 Difference]: With dead ends: 31 [2021-10-28 23:23:19,711 INFO L226 Difference]: Without dead ends: 21 [2021-10-28 23:23:19,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:23:19,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-28 23:23:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-28 23:23:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 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) [2021-10-28 23:23:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-28 23:23:19,717 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-10-28 23:23:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:19,717 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-28 23:23:19,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-28 23:23:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-28 23:23:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:23:19,719 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:19,719 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:19,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:23:19,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:19,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-10-28 23:23:19,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:19,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329423182] [2021-10-28 23:23:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:19,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:19,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:23:19,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484116691] [2021-10-28 23:23:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:19,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:19,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:19,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:23:19,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:23:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:20,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 23:23:20,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:20,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:20,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329423182] [2021-10-28 23:23:20,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:23:20,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484116691] [2021-10-28 23:23:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484116691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:23:20,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:23:20,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:23:20,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290328939] [2021-10-28 23:23:20,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:23:20,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:20,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:23:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:23:20,240 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-28 23:23:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:20,370 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-28 23:23:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:23:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:23:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:20,372 INFO L225 Difference]: With dead ends: 34 [2021-10-28 23:23:20,373 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 23:23:20,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:23:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 23:23:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-28 23:23:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-10-28 23:23:20,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-28 23:23:20,385 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2021-10-28 23:23:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:20,386 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-28 23:23:20,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2021-10-28 23:23:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-28 23:23:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:23:20,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:20,389 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:20,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:20,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:20,612 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2021-10-28 23:23:20,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:20,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780674112] [2021-10-28 23:23:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:20,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:20,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:23:20,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711519642] [2021-10-28 23:23:20,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:23:20,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:20,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:20,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:23:20,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:23:20,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 23:23:20,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:23:20,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:23:20,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:21,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:21,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780674112] [2021-10-28 23:23:21,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:23:21,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711519642] [2021-10-28 23:23:21,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711519642] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:23:21,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:23:21,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:23:21,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640865080] [2021-10-28 23:23:21,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:23:21,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:23:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:21,008 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-28 23:23:21,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:21,146 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-28 23:23:21,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:23:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 23:23:21,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:21,148 INFO L225 Difference]: With dead ends: 27 [2021-10-28 23:23:21,148 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 23:23:21,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:23:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 23:23:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:23:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 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) [2021-10-28 23:23:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-28 23:23:21,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2021-10-28 23:23:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:21,160 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-28 23:23:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-28 23:23:21,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-28 23:23:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:23:21,162 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:23:21,162 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:23:21,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:21,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:21,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:23:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2052638844, now seen corresponding path program 1 times [2021-10-28 23:23:21,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:21,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243397859] [2021-10-28 23:23:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:21,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:21,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:23:21,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307081557] [2021-10-28 23:23:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:21,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:21,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:23:21,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:23:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:21,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 23:23:21,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:21,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:21,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243397859] [2021-10-28 23:23:21,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:23:21,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307081557] [2021-10-28 23:23:21,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307081557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:23:21,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:23:21,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 23:23:21,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525509618] [2021-10-28 23:23:21,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:23:21,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:23:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:23:21,759 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-28 23:23:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:21,817 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-28 23:23:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:23:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 23:23:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:23:21,818 INFO L225 Difference]: With dead ends: 14 [2021-10-28 23:23:21,818 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:23:21,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:23:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:23:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:23:21,822 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) [2021-10-28 23:23:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:23:21,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-28 23:23:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:23:21,823 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:21,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-28 23:23:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:23:21,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:23:21,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:21,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:21,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:23:21,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:22,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:22,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:23:22,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:22,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:22,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:22,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:22,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:23:22,318 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~x~0 0) .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0)) (and .cse0 (< 0 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~c~0 1)))) [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-28 23:23:22,318 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-28 23:23:22,319 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-28 23:23:22,320 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~k~0 1))) (or (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~x~0 0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~c~0 0)) (and .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1) (<= 1 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (<= ULTIMATE.start_main_~c~0 1)))) [2021-10-28 23:23:22,320 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-28 23:23:22,321 INFO L860 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2021-10-28 23:23:22,321 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-28 23:23:22,321 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (and (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)))) [2021-10-28 23:23:22,321 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-28 23:23:22,321 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-28 23:23:22,329 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-28 23:23:22,333 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:23:22,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:23:22 BoogieIcfgContainer [2021-10-28 23:23:22,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:23:22,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:23:22,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:23:22,373 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:23:22,374 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:18" (3/4) ... [2021-10-28 23:23:22,377 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:23:22,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-28 23:23:22,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:23:22,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:22,393 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:23:22,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:23:22,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:23:22,458 INFO L168 Benchmark]: Toolchain (without parser) took 4116.66 ms. Allocated memory is still 119.5 MB. Free memory was 85.9 MB in the beginning and 76.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,458 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:22,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.56 ms. Allocated memory is still 119.5 MB. Free memory was 85.6 MB in the beginning and 95.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,461 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 92.5 MB in the end (delta: 995.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:22,461 INFO L168 Benchmark]: RCFGBuilder took 295.81 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 82.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,462 INFO L168 Benchmark]: TraceAbstraction took 3377.76 ms. Allocated memory is still 119.5 MB. Free memory was 82.3 MB in the beginning and 79.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,462 INFO L168 Benchmark]: Witness Printer took 83.45 ms. Allocated memory is still 119.5 MB. Free memory was 79.5 MB in the beginning and 76.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:22,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.56 ms. Allocated memory is still 119.5 MB. Free memory was 85.6 MB in the beginning and 95.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 93.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 119.5 MB. Free memory was 93.5 MB in the beginning and 92.5 MB in the end (delta: 995.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.81 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 82.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3377.76 ms. Allocated memory is still 119.5 MB. Free memory was 82.3 MB in the beginning and 79.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 83.45 ms. Allocated memory is still 119.5 MB. Free memory was 79.5 MB in the beginning and 76.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 34 SDslu, 69 SDs, 0 SdLazy, 84 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 122 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 219 SizeOfPredicates, 12 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 7/12 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 3 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((y == 0 && 0 <= k) && x == 0) && cond == 1) && 1 <= cond) && k <= 1) && c == 0) || (((((((cond == 1 && 0 < k) && 1 <= cond) && k <= 1) && y == 1) && 1 <= c) && x == y * y * y) && c <= 1) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((y == 0 && x == 0) && 1 <= cond) || (y == 1 && x == y * y * y) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((y == 0 && 0 <= k) && x == 0) && cond == 1) && k <= 1) && c == 0) || (((((((cond == 1 && 0 < k) && 1 <= cond) && k <= 1) && y == 1) && 1 <= c) && x == y * y * y) && c <= 1) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:23:22,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e77a2058-832d-4471-9470-67971747d872/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...