./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:21:59,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:21:59,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:21:59,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:21:59,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:21:59,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:21:59,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:21:59,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:21:59,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:21:59,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:21:59,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:21:59,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:21:59,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:21:59,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:21:59,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:21:59,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:21:59,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:21:59,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:21:59,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:21:59,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:21:59,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:21:59,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:21:59,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:21:59,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:21:59,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:21:59,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:21:59,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:21:59,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:21:59,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:21:59,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:21:59,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:21:59,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:21:59,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:21:59,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:21:59,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:21:59,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:21:59,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:21:59,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:21:59,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:21:59,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:21:59,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:21:59,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:21:59,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:21:59,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:21:59,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:21:59,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:21:59,295 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:21:59,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:21:59,296 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:21:59,297 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:21:59,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:21:59,297 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:21:59,297 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:21:59,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:21:59,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:21:59,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:21:59,299 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:21:59,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:21:59,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:21:59,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:21:59,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:21:59,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:21:59,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:21:59,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:21:59,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:21:59,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:21:59,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:21:59,302 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f [2021-11-12 23:21:59,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:21:59,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:21:59,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:21:59,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:21:59,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:21:59,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-11-12 23:21:59,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/61a22080b/8e21465eda124a518e93fd5dcaf0fccb/FLAG51b8b3193 [2021-11-12 23:22:00,206 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:22:00,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-11-12 23:22:00,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/61a22080b/8e21465eda124a518e93fd5dcaf0fccb/FLAG51b8b3193 [2021-11-12 23:22:00,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/61a22080b/8e21465eda124a518e93fd5dcaf0fccb [2021-11-12 23:22:00,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:22:00,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:22:00,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:00,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:22:00,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:22:00,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2158c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00, skipping insertion in model container [2021-11-12 23:22:00,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:22:00,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:00,852 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_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-11-12 23:22:00,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:00,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:22:00,894 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_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-11-12 23:22:00,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:00,920 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:22:00,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00 WrapperNode [2021-11-12 23:22:00,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:00,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:00,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:22:00,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:22:00,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:00,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:22:00,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:22:00,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:22:00,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:22:00,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:22:00,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:22:00,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:22:00,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (1/1) ... [2021-11-12 23:22:00,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:01,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:01,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:22:01,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:22:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:22:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:22:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:22:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:22:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:22:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:22:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:22:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:22:01,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:22:01,338 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:22:01,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:01 BoogieIcfgContainer [2021-11-12 23:22:01,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:22:01,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:22:01,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:22:01,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:22:01,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:22:00" (1/3) ... [2021-11-12 23:22:01,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29dc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:01, skipping insertion in model container [2021-11-12 23:22:01,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:00" (2/3) ... [2021-11-12 23:22:01,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d29dc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:01, skipping insertion in model container [2021-11-12 23:22:01,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:01" (3/3) ... [2021-11-12 23:22:01,352 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-11-12 23:22:01,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:22:01,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:22:01,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:22:01,431 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=FINITE_AUTOMATA, 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 [2021-11-12 23:22:01,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:22:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 23:22:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:22:01,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:01,466 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:01,466 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2113922188, now seen corresponding path program 1 times [2021-11-12 23:22:01,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:22:01,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269738863] [2021-11-12 23:22:01,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:01,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:22:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:01,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:22:01,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:22:01,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269738863] [2021-11-12 23:22:01,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269738863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:01,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:01,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:22:01,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295899053] [2021-11-12 23:22:01,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:01,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:22:01,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:22:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:22:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:22:01,739 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:22:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:01,783 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2021-11-12 23:22:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:22:01,786 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-12 23:22:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:01,794 INFO L225 Difference]: With dead ends: 32 [2021-11-12 23:22:01,809 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 23:22:01,812 INFO L932 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 [2021-11-12 23:22:01,816 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:01,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 21.90ms Time] [2021-11-12 23:22:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 23:22:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 23:22:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:22:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-12 23:22:01,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2021-11-12 23:22:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:01,895 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-12 23:22:01,895 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:22:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-12 23:22:01,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:22:01,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:01,897 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:01,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:22:01,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2066763035, now seen corresponding path program 1 times [2021-11-12 23:22:01,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:22:01,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067301517] [2021-11-12 23:22:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:01,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:22:01,917 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 23:22:01,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239242977] [2021-11-12 23:22:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:01,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:01,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:01,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:22:01,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:22:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:22:02,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:22:02,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:22:13,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:22:13,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067301517] [2021-11-12 23:22:13,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:22:13,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239242977] [2021-11-12 23:22:13,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239242977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:13,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:13,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 23:22:13,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273894647] [2021-11-12 23:22:13,225 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:13,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:22:13,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:22:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:22:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:22:13,227 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 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) [2021-11-12 23:22:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:13,882 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-11-12 23:22:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:22:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 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 13 [2021-11-12 23:22:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:13,884 INFO L225 Difference]: With dead ends: 28 [2021-11-12 23:22:13,884 INFO L226 Difference]: Without dead ends: 22 [2021-11-12 23:22:13,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:22:13,886 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 598.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 615.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:13,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 56 Invalid, 46 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 615.16ms Time] [2021-11-12 23:22:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-12 23:22:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-12 23:22:13,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 23:22:13,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-12 23:22:13,896 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2021-11-12 23:22:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:13,896 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-12 23:22:13,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 3 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) [2021-11-12 23:22:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-12 23:22:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:22:13,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:13,898 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:13,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-12 23:22:14,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:14,112 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1002189902, now seen corresponding path program 1 times [2021-11-12 23:22:14,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:22:14,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134768479] [2021-11-12 23:22:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:14,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:22:14,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 23:22:14,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322533046] [2021-11-12 23:22:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:14,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:14,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:22:14,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:22:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:14,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:22:14,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:22:14,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:31,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:22:31,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134768479] [2021-11-12 23:22:31,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:22:31,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322533046] [2021-11-12 23:22:31,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_main_~k~0#1|] [2021-11-12 23:22:31,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742620782] [2021-11-12 23:22:31,227 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-12 23:22:31,227 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:22:31,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:22:31,234 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:22:31,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:22:31,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-12 23:22:31,289 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-12 23:22:31,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 23:22:31,311 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-12 23:22:31,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-12 23:22:31,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:22:31,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:22:31,341 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:22:31,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:22:31,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-12 23:22:31,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:22:31,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 23:22:31,417 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:22:31,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-12 23:22:31,451 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:22:31,452 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:124, output treesize:99 [2021-11-12 23:22:31,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,461 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:31,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-12 23:22:31,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,482 INFO L185 QuantifierPusher]: treesize reduction 8, result has 92.4 percent of original size 97 [2021-11-12 23:22:31,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,491 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:31,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-12 23:22:31,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,508 INFO L185 QuantifierPusher]: treesize reduction 8, result has 92.4 percent of original size 97 [2021-11-12 23:22:31,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,683 INFO L180 QuantifierPusher]: treesize reduction 41, result has 75.0 percent of original size [2021-11-12 23:22:31,687 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:31,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:22:31,708 INFO L180 QuantifierPusher]: treesize reduction 41, result has 76.0 percent of original size [2021-11-12 23:22:31,718 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size 106 [2021-11-12 23:22:31,729 INFO L180 QuantifierPusher]: treesize reduction 41, result has 75.0 percent of original size [2021-11-12 23:22:31,733 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:31,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:31,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:31,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:22:31,752 INFO L180 QuantifierPusher]: treesize reduction 41, result has 76.0 percent of original size [2021-11-12 23:22:31,769 INFO L185 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size 106 [2021-11-12 23:22:31,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,850 INFO L180 QuantifierPusher]: treesize reduction 62, result has 75.6 percent of original size [2021-11-12 23:22:31,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:22:31,868 INFO L180 QuantifierPusher]: treesize reduction 62, result has 76.2 percent of original size [2021-11-12 23:22:31,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 23:22:31,892 INFO L180 QuantifierPusher]: treesize reduction 62, result has 75.6 percent of original size [2021-11-12 23:22:31,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:22:31,912 INFO L180 QuantifierPusher]: treesize reduction 62, result has 76.2 percent of original size [2021-11-12 23:22:31,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 23:22:31,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:31,969 INFO L180 QuantifierPusher]: treesize reduction 54, result has 76.1 percent of original size [2021-11-12 23:22:31,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-11-12 23:22:31,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,092 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,115 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.8 percent of original size 245 [2021-11-12 23:22:32,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,127 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.8 percent of original size [2021-11-12 23:22:32,136 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-12 23:22:32,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-12 23:22:32,152 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-12 23:22:32,190 INFO L185 QuantifierPusher]: treesize reduction 33, result has 75.7 percent of original size 103 [2021-11-12 23:22:32,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-11-12 23:22:32,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,220 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,244 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.8 percent of original size 245 [2021-11-12 23:22:32,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,258 INFO L180 QuantifierPusher]: treesize reduction 29, result has 91.8 percent of original size [2021-11-12 23:22:32,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-12 23:22:32,282 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-12 23:22:32,324 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 23:22:32,336 INFO L185 QuantifierPusher]: treesize reduction 33, result has 75.7 percent of original size 103 [2021-11-12 23:22:32,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 341 [2021-11-12 23:22:32,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,487 INFO L180 QuantifierPusher]: treesize reduction 30, result has 93.0 percent of original size [2021-11-12 23:22:32,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 545 [2021-11-12 23:22:32,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,587 INFO L180 QuantifierPusher]: treesize reduction 56, result has 68.2 percent of original size [2021-11-12 23:22:32,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,597 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,601 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:22:32,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:22:32,615 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,619 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,620 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,627 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:22:32,631 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:32,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:32,654 INFO L180 QuantifierPusher]: treesize reduction 56, result has 69.4 percent of original size [2021-11-12 23:22:32,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-12 23:22:32,663 INFO L180 QuantifierPusher]: treesize reduction 56, result has 68.2 percent of original size [2021-11-12 23:22:32,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,673 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:22:32,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:22:32,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,685 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,695 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:22:32,699 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,704 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:32,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:32,721 INFO L180 QuantifierPusher]: treesize reduction 56, result has 69.4 percent of original size [2021-11-12 23:22:32,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-12 23:22:32,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,748 INFO L180 QuantifierPusher]: treesize reduction 33, result has 75.2 percent of original size [2021-11-12 23:22:32,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-12 23:22:32,763 INFO L180 QuantifierPusher]: treesize reduction 56, result has 68.2 percent of original size [2021-11-12 23:22:32,767 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,770 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,777 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-11-12 23:22:32,780 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,784 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,791 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,795 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:22:32,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:22:32,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:32,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:32,820 INFO L180 QuantifierPusher]: treesize reduction 56, result has 69.4 percent of original size [2021-11-12 23:22:32,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-12 23:22:32,831 INFO L180 QuantifierPusher]: treesize reduction 56, result has 68.2 percent of original size [2021-11-12 23:22:32,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,838 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:22:32,847 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,851 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,855 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,858 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:32,861 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:22:32,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:22:32,865 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:32,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:32,871 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:32,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:32,886 INFO L180 QuantifierPusher]: treesize reduction 56, result has 69.4 percent of original size [2021-11-12 23:22:32,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-12 23:22:32,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:32,927 INFO L180 QuantifierPusher]: treesize reduction 57, result has 73.2 percent of original size [2021-11-12 23:22:32,931 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-11-12 23:22:32,945 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:32,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:32,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:32,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:22:32,981 INFO L180 QuantifierPusher]: treesize reduction 57, result has 74.1 percent of original size [2021-11-12 23:22:32,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 23:22:32,992 INFO L180 QuantifierPusher]: treesize reduction 57, result has 73.2 percent of original size [2021-11-12 23:22:32,998 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-12 23:22:33,012 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:33,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:22:33,032 INFO L180 QuantifierPusher]: treesize reduction 57, result has 74.1 percent of original size [2021-11-12 23:22:33,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 23:22:33,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,071 INFO L180 QuantifierPusher]: treesize reduction 30, result has 77.6 percent of original size [2021-11-12 23:22:33,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-12 23:22:33,089 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,091 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,092 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,094 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-12 23:22:33,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-12 23:22:33,099 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:22:33,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:22:33,102 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-12 23:22:33,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 23:22:33,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:22:33,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-12 23:22:33,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-12 23:22:33,135 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,141 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-12 23:22:33,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-11-12 23:22:33,146 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:22:33,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:22:33,149 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,156 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,163 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-12 23:22:33,170 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-11-12 23:22:33,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-12 23:22:33,174 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-11-12 23:22:33,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-11-12 23:22:33,180 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:33,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:33,199 INFO L180 QuantifierPusher]: treesize reduction 57, result has 73.2 percent of original size [2021-11-12 23:22:33,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-11-12 23:22:33,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:33,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 23:22:33,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,260 INFO L180 QuantifierPusher]: treesize reduction 56, result has 68.2 percent of original size [2021-11-12 23:22:33,262 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,265 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:33,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-11-12 23:22:33,274 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:33,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:33,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 23:22:33,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-12 23:22:33,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-12 23:22:33,290 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 23:22:33,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-12 23:22:33,295 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:33,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 23:22:33,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,353 INFO L180 QuantifierPusher]: treesize reduction 41, result has 75.0 percent of original size [2021-11-12 23:22:33,355 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-12 23:22:33,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-11-12 23:22:33,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,363 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:22:33,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:22:33,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-12 23:22:33,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-11-12 23:22:33,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:22:33,408 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2021-11-12 23:22:33,414 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 76 for LOIs [2021-11-12 23:22:33,417 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:22:35,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:22:35,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:35,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 23:22:35,603 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-12 23:22:35,604 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 23:22:35,610 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:22:35,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:35,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:22:35,840 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:22:35,842 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:22:35,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:22:35 BoogieIcfgContainer [2021-11-12 23:22:35,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:22:35,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:22:35,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:22:35,861 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:22:35,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:01" (3/4) ... [2021-11-12 23:22:35,865 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:22:35,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:22:35,866 INFO L158 Benchmark]: Toolchain (without parser) took 35286.22ms. Allocated memory is still 132.1MB. Free memory was 98.8MB in the beginning and 38.2MB in the end (delta: 60.5MB). Peak memory consumption was 61.3MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,866 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 88.1MB. Free memory was 46.8MB in the beginning and 46.7MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:22:35,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.31ms. Allocated memory is still 132.1MB. Free memory was 98.5MB in the beginning and 108.3MB in the end (delta: -9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.14ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 106.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,867 INFO L158 Benchmark]: Boogie Preprocessor took 21.29ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.8MB in the end (delta: 978.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:22:35,867 INFO L158 Benchmark]: RCFGBuilder took 362.36ms. Allocated memory is still 132.1MB. Free memory was 105.8MB in the beginning and 94.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,867 INFO L158 Benchmark]: TraceAbstraction took 34516.27ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 39.3MB in the end (delta: 54.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,868 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 132.1MB. Free memory was 39.3MB in the beginning and 38.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:22:35,869 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 88.1MB. Free memory was 46.8MB in the beginning and 46.7MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.31ms. Allocated memory is still 132.1MB. Free memory was 98.5MB in the beginning and 108.3MB in the end (delta: -9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.14ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 106.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.29ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.8MB in the end (delta: 978.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 362.36ms. Allocated memory is still 132.1MB. Free memory was 105.8MB in the beginning and 94.8MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 34516.27ms. Allocated memory is still 132.1MB. Free memory was 94.2MB in the beginning and 39.3MB in the end (delta: 54.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 132.1MB. Free memory was 39.3MB in the beginning and 38.2MB in the end (delta: 1.1MB). 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 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] short k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_short() [L21] CALL assume_abort_if_not(k>=0 && k<=5) [L7] COND TRUE !cond [L21] RET assume_abort_if_not(k>=0 && k<=5) [L22] CALL assume_abort_if_not(k <= 256) [L7] COND TRUE !cond [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND TRUE !(c < k) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.4s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 637.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 605.42ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 32 mSDtfsCounter, 44 mSolverCounterSat, 3.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 28.3s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 266 SizeOfPredicates, 5 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 25/29 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 23:22:35,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:22:38,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:22:38,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:22:38,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:22:38,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:22:38,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:22:38,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:22:38,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:22:38,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:22:38,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:22:38,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:22:38,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:22:38,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:22:38,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:22:38,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:22:38,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:22:38,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:22:38,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:22:38,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:22:38,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:22:38,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:22:38,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:22:38,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:22:38,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:22:38,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:22:38,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:22:38,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:22:38,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:22:38,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:22:38,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:22:38,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:22:38,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:22:38,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:22:38,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:22:38,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:22:38,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:22:38,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:22:38,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:22:38,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:22:38,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:22:38,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:22:38,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:22:38,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:22:38,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:22:38,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:22:38,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:22:38,627 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:22:38,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:22:38,627 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:22:38,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:22:38,628 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:22:38,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:22:38,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:22:38,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:22:38,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:22:38,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:22:38,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:22:38,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:22:38,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:22:38,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:22:38,633 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:22:38,633 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:22:38,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:22:38,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:22:38,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:22:38,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:22:38,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:22:38,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:22:38,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:22:38,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:38,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:22:38,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:22:38,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:22:38,636 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:22:38,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:22:38,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:22:38,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:22:38,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:22:38,638 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9671c34313c5e47de5bd2f842db47c3009aa180bae8c949f2010db1179ac602f [2021-11-12 23:22:39,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:22:39,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:22:39,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:22:39,116 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:22:39,119 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:22:39,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-11-12 23:22:39,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/2cd7d7fb6/e2c88e9c34df49a290fbebcd4ed10a86/FLAG3b7b5a97c [2021-11-12 23:22:39,784 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:22:39,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-11-12 23:22:39,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/2cd7d7fb6/e2c88e9c34df49a290fbebcd4ed10a86/FLAG3b7b5a97c [2021-11-12 23:22:40,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/data/2cd7d7fb6/e2c88e9c34df49a290fbebcd4ed10a86 [2021-11-12 23:22:40,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:22:40,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:22:40,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:40,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:22:40,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:22:40,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a2ccce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40, skipping insertion in model container [2021-11-12 23:22:40,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:22:40,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:22:40,283 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_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-11-12 23:22:40,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:40,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:22:40,330 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_dcc87e99-e499-4a81-832a-2300e6987110/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c[458,471] [2021-11-12 23:22:40,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:22:40,365 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:22:40,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40 WrapperNode [2021-11-12 23:22:40,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:22:40,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:40,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:22:40,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:22:40,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:22:40,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:22:40,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:22:40,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:22:40,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:22:40,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:22:40,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:22:40,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:22:40,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (1/1) ... [2021-11-12 23:22:40,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:22:40,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:22:40,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:22:40,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:22:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:22:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:22:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:22:41,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:22:41,592 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:22:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:41 BoogieIcfgContainer [2021-11-12 23:22:41,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:22:41,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:22:41,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:22:41,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:22:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:22:40" (1/3) ... [2021-11-12 23:22:41,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f97159d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:41, skipping insertion in model container [2021-11-12 23:22:41,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:22:40" (2/3) ... [2021-11-12 23:22:41,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f97159d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:22:41, skipping insertion in model container [2021-11-12 23:22:41,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:41" (3/3) ... [2021-11-12 23:22:41,604 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-11-12 23:22:41,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:22:41,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:22:41,666 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:22:41,674 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=FINITE_AUTOMATA, 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 [2021-11-12 23:22:41,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:22:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 23:22:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:22:41,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:41,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:41,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2021-11-12 23:22:41,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:41,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896997693] [2021-11-12 23:22:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:41,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:41,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:41,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:22:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:42,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:22:42,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:42,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:42,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:42,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896997693] [2021-11-12 23:22:42,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896997693] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:42,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:42,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:22:42,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236617933] [2021-11-12 23:22:42,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:42,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:22:42,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:22:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:22:42,262 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:22:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:22:42,284 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-11-12 23:22:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:22:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-12 23:22:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:22:42,294 INFO L225 Difference]: With dead ends: 45 [2021-11-12 23:22:42,295 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 23:22:42,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:22:42,303 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:22:42,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:22:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 23:22:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 23:22:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-12 23:22:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-12 23:22:42,349 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2021-11-12 23:22:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:22:42,350 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-12 23:22:42,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:22:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-12 23:22:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:22:42,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:22:42,353 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:22:42,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:22:42,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:22:42,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:22:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:22:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2021-11-12 23:22:42,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:22:42,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429279577] [2021-11-12 23:22:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:22:42,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:22:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:22:42,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:22:42,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:22:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:22:42,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:22:42,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:22:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:43,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:22:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:22:50,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:22:50,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429279577] [2021-11-12 23:22:50,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429279577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:22:50,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:22:50,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:22:50,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416323640] [2021-11-12 23:22:50,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:22:50,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:22:50,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:22:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:22:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:22:50,198 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:22:55,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:22:59,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:01,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:03,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:06,001 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:08,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:08,124 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-11-12 23:23:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:23:08,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 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 18 [2021-11-12 23:23:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:08,173 INFO L225 Difference]: With dead ends: 40 [2021-11-12 23:23:08,173 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 23:23:08,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:23:08,176 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15167.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15934.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:08,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 101 Invalid, 48 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 15934.74ms Time] [2021-11-12 23:23:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 23:23:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-11-12 23:23:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-12 23:23:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-12 23:23:08,192 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 18 [2021-11-12 23:23:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:08,192 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-12 23:23:08,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:23:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-12 23:23:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 23:23:08,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:08,195 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:08,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 23:23:08,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:08,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash -939024179, now seen corresponding path program 1 times [2021-11-12 23:23:08,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:08,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439392210] [2021-11-12 23:23:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:08,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:08,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:08,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:08,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:23:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:08,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:23:08,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:23:14,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:23:38,558 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:38,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439392210] [2021-11-12 23:23:38,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439392210] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:38,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:38,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-12 23:23:38,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019109435] [2021-11-12 23:23:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:38,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:23:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:23:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:23:38,561 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 23:23:41,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:45,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:48,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:23:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:48,094 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-12 23:23:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:23:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-11-12 23:23:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:48,155 INFO L225 Difference]: With dead ends: 39 [2021-11-12 23:23:48,155 INFO L226 Difference]: Without dead ends: 37 [2021-11-12 23:23:48,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:23:48,158 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8197.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8559.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:48,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 17 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 8559.15ms Time] [2021-11-12 23:23:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-12 23:23:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-12 23:23:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-12 23:23:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-12 23:23:48,172 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 31 [2021-11-12 23:23:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:48,173 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-12 23:23:48,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 23:23:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-12 23:23:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 23:23:48,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:48,175 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:48,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:48,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:48,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash 974859427, now seen corresponding path program 1 times [2021-11-12 23:23:48,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:48,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282151870] [2021-11-12 23:23:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:48,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:48,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:48,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:48,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:23:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:49,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:23:49,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:23:56,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 23:24:33,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:33,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282151870] [2021-11-12 23:24:33,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282151870] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:33,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:33,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-12 23:24:33,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073126713] [2021-11-12 23:24:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:33,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:33,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:24:33,174 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 23:24:41,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:42,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:42,865 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-11-12 23:24:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:24:42,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-12 23:24:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:42,867 INFO L225 Difference]: With dead ends: 43 [2021-11-12 23:24:42,867 INFO L226 Difference]: Without dead ends: 39 [2021-11-12 23:24:42,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:24:42,870 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7361.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7771.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:42,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 17 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 7771.80ms Time] [2021-11-12 23:24:42,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-12 23:24:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-11-12 23:24:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 23:24:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-12 23:24:42,880 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2021-11-12 23:24:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:42,881 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-12 23:24:42,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 23:24:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-12 23:24:42,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:24:42,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:42,883 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:42,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:24:43,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:43,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2021-11-12 23:24:43,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:43,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44126625] [2021-11-12 23:24:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:43,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:43,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:43,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:43,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:24:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:43,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:24:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 23:24:44,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:24:56,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:56,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44126625] [2021-11-12 23:24:56,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44126625] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:24:56,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1369110346] [2021-11-12 23:24:56,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:56,375 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:24:56,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:24:56,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:24:56,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:24:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:57,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:24:57,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:24:57,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:25:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1369110346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:04,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234466964] [2021-11-12 23:25:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:04,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:04,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:25:04,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 23:25:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:04,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:25:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:25:05,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-12 23:25:10,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234466964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:10,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:25:10,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 7, 10, 7] total 18 [2021-11-12 23:25:10,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93543765] [2021-11-12 23:25:10,638 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:25:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:25:10,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:10,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:25:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:25:10,646 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-12 23:25:25,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:25,928 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-11-12 23:25:25,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:25:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 36 [2021-11-12 23:25:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:25,930 INFO L225 Difference]: With dead ends: 49 [2021-11-12 23:25:25,930 INFO L226 Difference]: Without dead ends: 41 [2021-11-12 23:25:25,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:25:25,932 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5628.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.52ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 6441.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:25,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 208 Invalid, 148 Unknown, 0 Unchecked, 4.52ms Time], IncrementalHoareTripleChecker [19 Valid, 114 Invalid, 0 Unknown, 15 Unchecked, 6441.90ms Time] [2021-11-12 23:25:25,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-12 23:25:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-12 23:25:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-12 23:25:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-12 23:25:25,943 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 36 [2021-11-12 23:25:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:25,943 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-12 23:25:25,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 11 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2021-11-12 23:25:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-12 23:25:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 23:25:25,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:25,946 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:25,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:26,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-12 23:25:26,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-11-12 23:25:26,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:26,562 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:26,562 INFO L85 PathProgramCache]: Analyzing trace with hash 173594938, now seen corresponding path program 2 times [2021-11-12 23:25:26,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:26,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098356636] [2021-11-12 23:25:26,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:25:26,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:26,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:26,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:26,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:25:27,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:25:27,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:25:27,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:25:27,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:25:29,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:25:48,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:48,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098356636] [2021-11-12 23:25:48,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098356636] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:48,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1800178887] [2021-11-12 23:25:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:25:48,331 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:48,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:48,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-12 23:25:50,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:25:50,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:25:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:25:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:25:51,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:26:01,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1800178887] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:01,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620645246] [2021-11-12 23:26:01,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:26:01,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:26:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:26:01,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:26:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 23:26:02,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:26:02,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:26:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 23:26:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:26:04,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:26:12,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620645246] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:12,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:26:12,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 12, 9] total 26 [2021-11-12 23:26:12,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435956454] [2021-11-12 23:26:12,994 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:26:12,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 23:26:12,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:26:12,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 23:26:12,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:26:12,997 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-12 23:26:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:49,788 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-11-12 23:26:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 23:26:49,789 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) Word has length 50 [2021-11-12 23:26:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:49,791 INFO L225 Difference]: With dead ends: 64 [2021-11-12 23:26:49,791 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 23:26:49,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 23:26:49,794 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 35 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15247.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 17164.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:49,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 315 Invalid, 285 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 11 Unchecked, 17164.52ms Time] [2021-11-12 23:26:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 23:26:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-11-12 23:26:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:26:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-11-12 23:26:49,809 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 50 [2021-11-12 23:26:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:49,809 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-11-12 23:26:49,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 19 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-12 23:26:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-11-12 23:26:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 23:26:49,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:49,813 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:49,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:50,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-12 23:26:50,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:50,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:50,427 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:50,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:50,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1706793321, now seen corresponding path program 3 times [2021-11-12 23:26:50,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:50,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015215322] [2021-11-12 23:26:50,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:26:50,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:50,430 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:50,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:26:55,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-12 23:26:55,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:26:55,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:26:55,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:26:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 104 proven. 87 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-12 23:26:57,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 44 proven. 87 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-11-12 23:26:58,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:26:58,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015215322] [2021-11-12 23:26:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015215322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:26:58,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1595515493] [2021-11-12 23:26:58,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:26:58,955 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:26:58,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:26:58,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:26:58,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:27:03,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-12 23:27:03,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:27:03,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:27:03,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-12 23:27:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-12 23:28:48,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1595515493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:28:48,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117616044] [2021-11-12 23:28:48,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:28:48,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:28:48,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:28:48,531 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:28:48,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 23:28:53,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-12 23:28:53,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:28:54,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:28:54,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:28:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 162 proven. 45 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 23:28:58,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:29:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 98 proven. 21 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-12 23:29:12,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117616044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:12,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:29:12,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14, 14, 11, 12] total 58 [2021-11-12 23:29:12,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035930860] [2021-11-12 23:29:12,346 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:29:12,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-12 23:29:12,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:29:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-12 23:29:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=2796, Unknown=4, NotChecked=0, Total=3306 [2021-11-12 23:29:12,352 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 58 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 52 states have internal predecessors, (117), 50 states have call successors, (57), 4 states have call predecessors, (57), 3 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) [2021-11-12 23:29:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:29:32,887 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-11-12 23:29:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:29:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 52 states have internal predecessors, (117), 50 states have call successors, (57), 4 states have call predecessors, (57), 3 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) Word has length 85 [2021-11-12 23:29:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:29:32,941 INFO L225 Difference]: With dead ends: 60 [2021-11-12 23:29:32,942 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:29:32,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=671, Invalid=3485, Unknown=4, NotChecked=0, Total=4160 [2021-11-12 23:29:32,945 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12749.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.16ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 14284.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:29:32,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 468 Invalid, 367 Unknown, 0 Unchecked, 7.16ms Time], IncrementalHoareTripleChecker [39 Valid, 317 Invalid, 0 Unknown, 11 Unchecked, 14284.41ms Time] [2021-11-12 23:29:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:29:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:29:32,947 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) [2021-11-12 23:29:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:29:32,947 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2021-11-12 23:29:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:29:32,948 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:29:32,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 52 states have internal predecessors, (117), 50 states have call successors, (57), 4 states have call predecessors, (57), 3 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) [2021-11-12 23:29:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:29:32,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:29:32,952 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:29:32,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:29:33,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-12 23:29:33,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-12 23:29:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:29:33,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:29:53,698 WARN L227 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 91 DAG size of output: 63 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-12 23:30:13,302 WARN L227 SmtUtils]: Spent 19.60s on a formula simplification. DAG size of input: 85 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-12 23:30:33,650 WARN L227 SmtUtils]: Spent 20.35s on a formula simplification. DAG size of input: 91 DAG size of output: 63 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-12 23:30:55,029 WARN L227 SmtUtils]: Spent 21.35s on a formula simplification. DAG size of input: 85 DAG size of output: 38 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-12 23:30:55,033 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:30:55,033 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse6 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 ((_ sign_extend 32) .cse4))) (let ((.cse5 (= .cse6 (bvmul |ULTIMATE.start_main_~y~0#1| .cse3)))) (let ((.cse1 (or .cse5 (bvslt |ULTIMATE.start_main_~c~0#1| .cse3))) (.cse0 (= (bvmul (_ bv2 64) (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (bvadd (bvneg (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse6 (bvmul (_ bv12 64) |ULTIMATE.start_main_~x~0#1|) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))))) (.cse2 (bvsle .cse4 (_ bv5 32)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv2 64))) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv4 64)) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| (_ bv4 64))) (and .cse0 (= (_ bv3 64) |ULTIMATE.start_main_~c~0#1|) (bvslt (_ bv2 64) .cse3) .cse2 (= (_ bv3 64) |ULTIMATE.start_main_~y~0#1|)) (and .cse2 (bvsge .cse4 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64))) (and .cse0 .cse5 (= |ULTIMATE.start_main_~c~0#1| (_ bv5 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv5 64))) (and (bvslt (bvadd |ULTIMATE.start_main_~c~0#1| (_ bv18446744073709551615 64)) .cse3) .cse0 .cse2 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) (= |ULTIMATE.start_main_~c~0#1| (_ bv1 64)))))))) [2021-11-12 23:30:55,034 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2021-11-12 23:30:55,034 INFO L861 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2021-11-12 23:30:55,034 INFO L854 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (and (bvsle .cse0 (_ bv5 32)) (bvsge .cse0 (_ bv0 32)))) [2021-11-12 23:30:55,034 INFO L858 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2021-11-12 23:30:55,034 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 23:30:55,035 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:30:55,035 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 23:30:55,035 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse6 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 ((_ sign_extend 32) .cse4))) (let ((.cse5 (= .cse6 (bvmul |ULTIMATE.start_main_~y~0#1| .cse3)))) (let ((.cse1 (or .cse5 (bvslt |ULTIMATE.start_main_~c~0#1| .cse3))) (.cse0 (= (bvmul (_ bv2 64) (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (bvadd (bvneg (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse6 (bvmul (_ bv12 64) |ULTIMATE.start_main_~x~0#1|) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|))))) (.cse2 (bvsle .cse4 (_ bv5 32)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv2 64))) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv4 64)) .cse1 .cse2 (= |ULTIMATE.start_main_~y~0#1| (_ bv4 64))) (and .cse0 (= (_ bv3 64) |ULTIMATE.start_main_~c~0#1|) (bvslt (_ bv2 64) .cse3) .cse2 (= (_ bv3 64) |ULTIMATE.start_main_~y~0#1|)) (and .cse2 (bvsge .cse4 (_ bv0 32)) (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~c~0#1| (_ bv0 64))) (and .cse0 .cse5 (= |ULTIMATE.start_main_~c~0#1| (_ bv5 64)) (= |ULTIMATE.start_main_~y~0#1| (_ bv5 64))) (and (bvslt (bvadd |ULTIMATE.start_main_~c~0#1| (_ bv18446744073709551615 64)) .cse3) .cse0 .cse2 (= |ULTIMATE.start_main_~y~0#1| (_ bv1 64)) (= |ULTIMATE.start_main_~c~0#1| (_ bv1 64)))))))) [2021-11-12 23:30:55,035 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (or (let ((.cse2 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (let ((.cse3 ((_ sign_extend 32) .cse2))) (let ((.cse0 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (bvmul |ULTIMATE.start_main_~y~0#1| .cse3))) (and (= (bvmul (_ bv2 64) (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (bvadd (bvneg (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse0 (bvmul (_ bv12 64) |ULTIMATE.start_main_~x~0#1|) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)))) (= .cse0 .cse1) (bvsle .cse2 (_ bv5 32)) (bvsge .cse2 (_ bv0 32)) (or (bvslt (bvadd |ULTIMATE.start_main_~c~0#1| (_ bv1 64)) .cse3) (= (bvadd (_ bv1 64) .cse0 (bvmul (_ bv2 64) |ULTIMATE.start_main_~y~0#1|)) (bvadd .cse3 .cse1)) (not (bvslt |ULTIMATE.start_main_~c~0#1| .cse3))))))) (and (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|))) [2021-11-12 23:30:55,036 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-11-12 23:30:55,036 INFO L861 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-11-12 23:30:55,036 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (and (= (_ bv0 64) |ULTIMATE.start_main_~x~0#1|) (= (_ bv0 64) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse0 (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 ((_ sign_extend 16) |ULTIMATE.start_main_~k~0#1|))) (and (= (bvmul (_ bv2 64) (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (bvadd (bvneg (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv5 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse0 (bvmul (_ bv12 64) |ULTIMATE.start_main_~x~0#1|) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul |ULTIMATE.start_main_~y~0#1| (_ bv6 64)) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~y~0#1|)))) (= .cse0 (bvmul |ULTIMATE.start_main_~y~0#1| ((_ sign_extend 32) .cse1))) (bvsle .cse1 (_ bv5 32)) (bvsge .cse1 (_ bv0 32))))) [2021-11-12 23:30:55,036 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2021-11-12 23:30:55,036 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-12 23:30:55,037 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-11-12 23:30:55,037 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-11-12 23:30:55,037 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2021-11-12 23:30:55,037 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-11-12 23:30:55,038 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-11-12 23:30:55,038 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2021-11-12 23:30:55,038 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2021-11-12 23:30:55,038 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-12 23:30:55,042 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-11-12 23:30:55,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:30:55,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:30:55 BoogieIcfgContainer [2021-11-12 23:30:55,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:30:55,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:30:55,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:30:55,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:30:55,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:22:41" (3/4) ... [2021-11-12 23:30:55,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:30:55,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-12 23:30:55,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-12 23:30:55,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-12 23:30:55,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-12 23:30:55,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 23:30:55,126 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:30:55,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:30:55,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:30:55,169 INFO L158 Benchmark]: Toolchain (without parser) took 495057.36ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.7MB in the beginning and 56.6MB in the end (delta: -13.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,170 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:30:55,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.24ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 31.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.53ms. Allocated memory is still 62.9MB. Free memory was 31.7MB in the beginning and 45.6MB in the end (delta: -13.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,171 INFO L158 Benchmark]: Boogie Preprocessor took 36.84ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:30:55,172 INFO L158 Benchmark]: RCFGBuilder took 1125.04ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 33.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,172 INFO L158 Benchmark]: TraceAbstraction took 493511.07ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 59.5MB in the end (delta: -26.2MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,173 INFO L158 Benchmark]: Witness Printer took 59.91ms. Allocated memory is still 79.7MB. Free memory was 59.5MB in the beginning and 56.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:30:55,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.24ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 31.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.53ms. Allocated memory is still 62.9MB. Free memory was 31.7MB in the beginning and 45.6MB in the end (delta: -13.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.84ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1125.04ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 33.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 493511.07ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 33.2MB in the beginning and 59.5MB in the end (delta: -26.2MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. * Witness Printer took 59.91ms. Allocated memory is still 79.7MB. Free memory was 59.5MB in the beginning and 56.6MB in the end (delta: 2.9MB). 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: 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 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 493.4s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 110.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 81.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 70156.52ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 1259 SdHoareTripleChecker+Invalid, 64352.66ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37 IncrementalHoareTripleChecker+Unchecked, 1082 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 725 IncrementalHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 177 mSDtfsCounter, 725 mSolverCounterSat, 26.59ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1230 GetRequests, 1083 SyntacticMatches, 3 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1408 ImplicationChecksByTransitivity, 217.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=6, InterpolantAutomatonStates: 72, 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, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 34 PreInvPairs, 58 NumberOfFragments, 807 HoareAnnotationTreeSize, 34 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1150 FormulaSimplificationTreeSizeReductionInter, 81.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 22.9s SatisfiabilityAnalysisTime, 275.6s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1198 ConstructedInterpolants, 9 QuantifiedInterpolants, 6830 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1209 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 1940/2538 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 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((~bvmul64(2bv64, ~bvmul64(y, y, y, y, y, y)) == ~bvadd16(~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 5bv64), y), y), y)), ~bvmul64(y, y), ~bvmul64(12bv64, x), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 6bv64), y), y), y), y))) && (~bvmul64(y, y) == ~bvmul64(y, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) && c == 2bv64) && y == 2bv64) || ((((~bvmul64(2bv64, ~bvmul64(y, y, y, y, y, y)) == ~bvadd16(~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 5bv64), y), y), y)), ~bvmul64(y, y), ~bvmul64(12bv64, x), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 6bv64), y), y), y), y))) && c == 4bv64) && (~bvmul64(y, y) == ~bvmul64(y, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) || ~bvslt64(c, ~sign_extendFrom8To32(~sign_extendFrom8To32(k))))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) && y == 4bv64)) || ((((~bvmul64(2bv64, ~bvmul64(y, y, y, y, y, y)) == ~bvadd16(~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 5bv64), y), y), y)), ~bvmul64(y, y), ~bvmul64(12bv64, x), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 6bv64), y), y), y), y))) && 3bv64 == c) && ~bvslt64(2bv64, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) && 3bv64 == y)) || ((((~bvsle32(~sign_extendFrom8To32(k), 5bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && 0bv64 == x) && 0bv64 == y) && c == 0bv64)) || (((~bvmul64(2bv64, ~bvmul64(y, y, y, y, y, y)) == ~bvadd16(~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 5bv64), y), y), y)), ~bvmul64(y, y), ~bvmul64(12bv64, x), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 6bv64), y), y), y), y))) && ~bvmul64(y, y) == ~bvmul64(y, ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) && c == 5bv64) && y == 5bv64)) || ((((~bvslt64(~bvadd16(c, 18446744073709551615bv64), ~sign_extendFrom8To32(~sign_extendFrom8To32(k))) && ~bvmul64(2bv64, ~bvmul64(y, y, y, y, y, y)) == ~bvadd16(~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 5bv64), y), y), y)), ~bvmul64(y, y), ~bvmul64(12bv64, x), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(y, 6bv64), y), y), y), y)))) && ~bvsle32(~sign_extendFrom8To32(k), 5bv32)) && y == 1bv64) && c == 1bv64) RESULT: Ultimate proved your program to be correct! [2021-11-12 23:30:55,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc87e99-e499-4a81-832a-2300e6987110/bin/utaipan-vmNK8stdcF/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