./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs --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 d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 .................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs --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 d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:59:19,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:59:19,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:59:19,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:59:19,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:59:19,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:59:19,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:59:19,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:59:19,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:59:19,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:59:19,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:59:19,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:59:19,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:59:19,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:59:19,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:59:19,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:59:19,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:59:19,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:59:19,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:59:20,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:59:20,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:59:20,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:59:20,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:59:20,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:59:20,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:59:20,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:59:20,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:59:20,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:59:20,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:59:20,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:59:20,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:59:20,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:59:20,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:59:20,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:59:20,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:59:20,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:59:20,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:59:20,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:59:20,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:59:20,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:59:20,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:59:20,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:59:20,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:59:20,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:59:20,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:59:20,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:59:20,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:59:20,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:59:20,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:59:20,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:59:20,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:59:20,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:59:20,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:59:20,109 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:59:20,109 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:59:20,110 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:59:20,110 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:59:20,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:59:20,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:59:20,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:59:20,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:59:20,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:59:20,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:59:20,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:59:20,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:59:20,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:59:20,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:59:20,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:59:20,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:59:20,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:59:20,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:59:20,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:59:20,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:59:20,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:59:20,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:59:20,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:59:20,119 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:59:20,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:59:20,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:59:20,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:59:20,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:59:20,121 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_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 [2021-10-16 02:59:20,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:59:20,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:59:20,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:59:20,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:59:20,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:59:20,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-16 02:59:20,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/40baa58e7/0738c1de903049dfbef666670dde444f/FLAGe453e1d07 [2021-10-16 02:59:21,204 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:59:21,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-16 02:59:21,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/40baa58e7/0738c1de903049dfbef666670dde444f/FLAGe453e1d07 [2021-10-16 02:59:21,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/40baa58e7/0738c1de903049dfbef666670dde444f [2021-10-16 02:59:21,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:59:21,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:59:21,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:59:21,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:59:21,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:59:21,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:21,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd315af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21, skipping insertion in model container [2021-10-16 02:59:21,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:21,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:59:21,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:59:21,922 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_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-16 02:59:21,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:59:21,953 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:59:21,969 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_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-16 02:59:21,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:59:21,994 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:59:21,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21 WrapperNode [2021-10-16 02:59:21,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:59:21,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:59:21,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:59:21,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:59:22,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:59:22,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:59:22,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:59:22,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:59:22,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:59:22,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:59:22,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:59:22,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:59:22,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (1/1) ... [2021-10-16 02:59:22,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:59:22,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:22,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:59:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:59:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:59:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:59:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:59:22,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:59:22,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:59:22,480 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:59:22,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:59:22 BoogieIcfgContainer [2021-10-16 02:59:22,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:59:22,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:59:22,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:59:22,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:59:22,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:59:21" (1/3) ... [2021-10-16 02:59:22,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53407dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:59:22, skipping insertion in model container [2021-10-16 02:59:22,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:21" (2/3) ... [2021-10-16 02:59:22,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53407dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:59:22, skipping insertion in model container [2021-10-16 02:59:22,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:59:22" (3/3) ... [2021-10-16 02:59:22,493 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound2.c [2021-10-16 02:59:22,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:59:22,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:59:22,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:59:22,561 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, mConcurrency=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 [2021-10-16 02:59:22,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:59:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:59:22,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:22,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:59:22,596 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:59:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:22,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2997072, now seen corresponding path program 1 times [2021-10-16 02:59:22,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:59:22,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630619733] [2021-10-16 02:59:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:22,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:59:22,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:59:22,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267124999] [2021-10-16 02:59:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:22,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:59:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:22,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:59:22,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:59:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:59:22,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:23,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:23,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:59:23,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630619733] [2021-10-16 02:59:23,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:59:23,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267124999] [2021-10-16 02:59:23,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267124999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:59:23,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:59:23,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:59:23,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784262855] [2021-10-16 02:59:23,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:59:23,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:59:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:59:23,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:59:23,994 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:59:24,243 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-16 02:59:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:59:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:59:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:59:24,253 INFO L225 Difference]: With dead ends: 36 [2021-10-16 02:59:24,253 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:59:24,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 867.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:59:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:59:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:59:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-16 02:59:24,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-16 02:59:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:59:24,305 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-16 02:59:24,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-16 02:59:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:59:24,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:24,307 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:24,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:24,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-16 02:59:24,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:59:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:24,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1480619493, now seen corresponding path program 1 times [2021-10-16 02:59:24,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:59:24,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027051530] [2021-10-16 02:59:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:24,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:59:24,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:59:24,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098199554] [2021-10-16 02:59:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:24,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:59:24,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:24,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:59:24,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:59:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:24,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:59:24,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:24,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:25,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:59:25,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027051530] [2021-10-16 02:59:25,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:59:25,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098199554] [2021-10-16 02:59:25,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098199554] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:59:25,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1198126302] [2021-10-16 02:59:25,227 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 02:59:25,229 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:59:25,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:59:25,240 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:59:25,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:59:25,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:59:25,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:59:25,281 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:59:25,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:59:25,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-16 02:59:25,333 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:59:25,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:59:25,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:59:25,337 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:59:25,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:59:25,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:59:25,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:59:25,380 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 [2021-10-16 02:59:25,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:59:25,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:59:25,385 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:59:25,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:59:25,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:59:25,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:59:25,401 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:59:25,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:59:25,452 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:59:25,456 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.7 percent of original size [2021-10-16 02:59:25,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-16 02:59:25,460 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:59:25,461 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:444, output treesize:144 [2021-10-16 02:59:25,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:25,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:59:25,676 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:59:25,680 INFO L168 Benchmark]: Toolchain (without parser) took 4103.58 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 51.6 MB in the beginning and 39.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:25,681 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 86.0 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:59:25,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.52 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 51.4 MB in the beginning and 85.0 MB in the end (delta: -33.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:25,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:25,683 INFO L168 Benchmark]: Boogie Preprocessor took 28.09 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.7 MB in the end (delta: 950.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:59:25,684 INFO L168 Benchmark]: RCFGBuilder took 411.48 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 71.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:25,685 INFO L168 Benchmark]: TraceAbstraction took 3193.80 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 39.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:59:25,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 86.0 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.52 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 51.4 MB in the beginning and 85.0 MB in the end (delta: -33.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.28 ms. Allocated memory is still 109.1 MB. Free memory was 85.0 MB in the beginning and 83.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.09 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 82.7 MB in the end (delta: 950.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 411.48 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 71.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3193.80 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 39.6 MB in the end (delta: 30.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:59:25,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:59:28,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:59:28,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:59:28,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:59:28,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:59:28,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:59:28,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:59:28,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:59:28,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:59:28,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:59:28,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:59:28,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:59:28,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:59:28,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:59:28,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:59:28,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:59:28,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:59:28,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:59:28,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:59:28,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:59:28,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:59:28,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:59:28,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:59:28,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:59:28,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:59:28,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:59:28,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:59:28,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:59:28,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:59:28,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:59:28,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:59:28,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:59:28,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:59:28,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:59:28,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:59:28,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:59:28,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:59:28,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:59:28,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:59:28,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:59:28,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:59:28,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:59:28,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:59:28,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:59:28,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:59:28,781 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:59:28,781 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:59:28,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:59:28,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:59:28,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:59:28,782 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:59:28,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:59:28,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:59:28,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:59:28,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:59:28,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:59:28,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:59:28,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:59:28,787 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:59:28,787 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:59:28,788 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:59:28,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:59:28,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:59:28,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:59:28,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:59:28,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:59:28,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:59:28,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:59:28,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:59:28,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:59:28,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:59:28,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:59:28,791 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:59:28,791 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:59:28,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:59:28,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:59:28,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:59:28,792 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_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74df1b7449c0e223ad61b2c5cd0b2b79a63ca78 [2021-10-16 02:59:29,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:59:29,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:59:29,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:59:29,288 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:59:29,290 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:59:29,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-16 02:59:29,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/275487f91/d04fc523336c44cc90e90665b4249e34/FLAG95411dc58 [2021-10-16 02:59:30,022 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:59:30,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2021-10-16 02:59:30,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/275487f91/d04fc523336c44cc90e90665b4249e34/FLAG95411dc58 [2021-10-16 02:59:30,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/data/275487f91/d04fc523336c44cc90e90665b4249e34 [2021-10-16 02:59:30,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:59:30,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:59:30,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:59:30,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:59:30,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:59:30,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e74d6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30, skipping insertion in model container [2021-10-16 02:59:30,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:59:30,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:59:30,616 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_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-16 02:59:30,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:59:30,656 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:59:30,672 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_bf14b332-7f20-4070-a6f7-4fd69692d641/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c[458,471] [2021-10-16 02:59:30,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:59:30,736 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:59:30,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30 WrapperNode [2021-10-16 02:59:30,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:59:30,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:59:30,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:59:30,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:59:30,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:59:30,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:59:30,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:59:30,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:59:30,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:59:30,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:59:30,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:59:30,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:59:30,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (1/1) ... [2021-10-16 02:59:30,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:59:30,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:59:30,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:59:30,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:59:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:59:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:59:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:59:30,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:59:32,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:59:32,400 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-16 02:59:32,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:59:32 BoogieIcfgContainer [2021-10-16 02:59:32,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:59:32,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:59:32,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:59:32,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:59:32,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:59:30" (1/3) ... [2021-10-16 02:59:32,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ea8b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:59:32, skipping insertion in model container [2021-10-16 02:59:32,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:59:30" (2/3) ... [2021-10-16 02:59:32,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ea8b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:59:32, skipping insertion in model container [2021-10-16 02:59:32,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:59:32" (3/3) ... [2021-10-16 02:59:32,412 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound2.c [2021-10-16 02:59:32,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:59:32,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:59:32,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:59:32,484 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, mConcurrency=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 [2021-10-16 02:59:32,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:59:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:59:32,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:32,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:32,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:59:32,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:32,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-16 02:59:32,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:59:32,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258826309] [2021-10-16 02:59:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:32,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:59:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:59:32,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:59:32,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:59:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:32,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:59:32,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:32,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:59:32,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258826309] [2021-10-16 02:59:32,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258826309] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:59:32,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:59:32,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:59:32,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890530011] [2021-10-16 02:59:32,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:59:32,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:59:32,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:59:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:59:32,983 INFO L87 Difference]: Start difference. First operand has 21 states, 17 states have (on average 1.588235294117647) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:59:33,005 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-10-16 02:59:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:59:33,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:59:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:59:33,018 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:59:33,019 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 02:59:33,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:59:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 02:59:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 02:59:33,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-16 02:59:33,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-10-16 02:59:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:59:33,067 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-16 02:59:33,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-16 02:59:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:59:33,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:33,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:33,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:59:33,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:59:33,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:59:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-16 02:59:33,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:59:33,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540871599] [2021-10-16 02:59:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:33,286 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:59:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:59:33,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:59:33,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:59:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:59:33,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:33,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:59:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:36,905 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:59:36,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540871599] [2021-10-16 02:59:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540871599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:59:36,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:59:36,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:59:36,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456481775] [2021-10-16 02:59:36,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:59:36,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:59:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:59:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:59:36,911 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:59:52,300 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-16 02:59:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:59:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:59:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:59:52,302 INFO L225 Difference]: With dead ends: 40 [2021-10-16 02:59:52,302 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:59:52,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 9763.3ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:59:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:59:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-16 02:59:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-16 02:59:52,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 7 [2021-10-16 02:59:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:59:52,313 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-16 02:59:52,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:59:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-16 02:59:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:59:52,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:59:52,316 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:59:52,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 02:59:52,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:59:52,527 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:59:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:59:52,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 1 times [2021-10-16 02:59:52,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:59:52,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880757746] [2021-10-16 02:59:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:59:52,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:59:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:59:52,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:59:52,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:59:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:59:53,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:59:53,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:59:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:59:56,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 03:00:12,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:00:12,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880757746] [2021-10-16 03:00:12,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880757746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:12,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [88008628] [2021-10-16 03:00:12,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:12,545 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:00:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:00:12,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:00:12,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 03:00:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 03:00:13,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:14,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 03:00:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [88008628] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:25,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749986064] [2021-10-16 03:00:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:25,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:25,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:25,617 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:25,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 03:00:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:26,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:00:26,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:28,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 03:00:40,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749986064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:00:40,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:00:40,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 7, 4] total 9 [2021-10-16 03:00:40,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316436727] [2021-10-16 03:00:40,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:00:40,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:00:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:00:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:00:40,343 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:59,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:59,663 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-16 03:00:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 03:00:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:00:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:59,665 INFO L225 Difference]: With dead ends: 36 [2021-10-16 03:00:59,665 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:00:59,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 43750.3ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-16 03:00:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:00:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 14. [2021-10-16 03:00:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-16 03:00:59,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 13 [2021-10-16 03:00:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:59,672 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-16 03:00:59,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-16 03:00:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:00:59,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:59,674 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:59,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:59,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:00,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:01:00,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:01:00,279 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:01:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:01:00,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2052638844, now seen corresponding path program 1 times [2021-10-16 03:01:00,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:01:00,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803066328] [2021-10-16 03:01:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:00,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:01:00,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:01:00,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:01:00,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:01:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:00,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:01:00,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:01,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:12,093 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:01:12,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803066328] [2021-10-16 03:01:12,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803066328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:12,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [620308206] [2021-10-16 03:01:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:12,095 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:01:12,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:01:12,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:01:12,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 03:01:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:12,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:01:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:13,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:19,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [620308206] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:19,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119880636] [2021-10-16 03:01:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:01:19,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:01:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:01:19,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:01:19,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 03:01:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:01:19,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:01:19,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:01:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:20,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:01:26,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119880636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:01:26,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:01:26,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 8, 6] total 15 [2021-10-16 03:01:26,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523613415] [2021-10-16 03:01:26,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:01:26,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:01:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:01:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:01:26,045 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:22,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:22,109 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-16 03:02:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-16 03:02:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:02:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:22,128 INFO L225 Difference]: With dead ends: 34 [2021-10-16 03:02:22,129 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 03:02:22,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 55159.3ms TimeCoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2021-10-16 03:02:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 03:02:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-16 03:02:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-16 03:02:22,139 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2021-10-16 03:02:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:22,140 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-16 03:02:22,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-16 03:02:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 03:02:22,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:22,142 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:22,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-16 03:02:22,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:22,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-16 03:02:22,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:22,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash -755348412, now seen corresponding path program 2 times [2021-10-16 03:02:22,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:22,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765941924] [2021-10-16 03:02:22,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:02:22,766 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:22,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:22,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:22,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 03:02:24,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:02:24,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:02:24,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:02:24,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:25,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:25,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:25,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765941924] [2021-10-16 03:02:25,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765941924] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:25,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1431815367] [2021-10-16 03:02:25,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:02:25,871 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:02:25,872 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:02:25,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 03:02:27,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:02:27,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:02:27,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 03:02:27,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:29,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:03:33,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1431815367] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:03:33,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031611477] [2021-10-16 03:03:33,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:03:33,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:03:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:03:33,441 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:03:33,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 03:03:34,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:03:34,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:03:34,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:03:34,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:03:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:03:36,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 03:03:42,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031611477] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 03:03:42,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-16 03:03:42,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9, 10, 10, 7] total 38 [2021-10-16 03:03:42,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598677494] [2021-10-16 03:03:42,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 03:03:42,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:03:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 03:03:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1154, Unknown=3, NotChecked=0, Total=1406 [2021-10-16 03:03:42,811 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:45,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:03:45,880 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-10-16 03:03:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:03:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 03:03:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:03:45,881 INFO L225 Difference]: With dead ends: 26 [2021-10-16 03:03:45,881 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:03:45,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 58748.8ms TimeCoverageRelationStatistics Valid=302, Invalid=1335, Unknown=3, NotChecked=0, Total=1640 [2021-10-16 03:03:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:03:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:03:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:03:45,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-16 03:03:45,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:03:45,884 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:03:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:03:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:03:45,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:03:45,887 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:03:45,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:03:45,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:03:45,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:46,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:46,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:03:46,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:03:46,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:03:46,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:46,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:46,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:46,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:03:46,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:04:00,238 WARN L207 SmtUtils]: Spent 13.58 s on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-10-16 03:04:06,854 WARN L207 SmtUtils]: Spent 6.61 s on a formula simplification. DAG size of input: 50 DAG size of output: 24 [2021-10-16 03:04:25,426 WARN L207 SmtUtils]: Spent 18.57 s on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-10-16 03:04:25,430 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse15 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse8 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvneg .cse15)) (.cse14 ((_ sign_extend 16) ULTIMATE.start_main_~k~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)))) (let ((.cse4 (or .cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse5 (bvsle .cse14 (_ bv2 32))) (.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse7 (= .cse8 (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) .cse9 (bvneg (bvmul (bvmul .cse15 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0)))) (.cse10 (bvsge .cse14 (_ bv0 32))) (.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) .cse14))) (or (let ((.cse0 (bvadd .cse8 .cse1))) (and (= ULTIMATE.start_main_~y~0 .cse0) (bvslt (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse2) .cse3 (= ULTIMATE.start_main_~c~0 .cse0) .cse4 .cse5 .cse6 .cse7)) (and (not (bvslt ULTIMATE.start_main_~c~0 .cse2)) (= .cse8 (bvadd .cse9 (bvmul .cse2 ULTIMATE.start_main_~y~0))) .cse3 .cse10 .cse4 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse12 ((_ sign_extend 32) (_ bv1 32))) (.cse11 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse11)) (bvslt (bvadd .cse12 ULTIMATE.start_main_~c~0) .cse11) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (let ((.cse13 (bvadd .cse12 ULTIMATE.start_main_~y~0))) (bvmul .cse13 .cse13))) (bvmul .cse11 .cse12) (bvmul .cse11 ULTIMATE.start_main_~y~0)))))) .cse5 .cse6 .cse7) (and (= .cse8 ULTIMATE.start_main_~y~0) (= .cse8 ULTIMATE.start_main_~c~0) (= .cse8 ULTIMATE.start_main_~x~0) .cse3 .cse10 (not (bvslt (bvadd (bvmul .cse1 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse2))))))) [2021-10-16 03:04:25,430 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 03:04:25,431 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-10-16 03:04:25,431 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-16 03:04:25,431 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-16 03:04:25,431 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-16 03:04:25,432 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-16 03:04:25,432 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:04:25,432 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:04:25,432 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:04:25,432 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 03:04:25,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:04:25,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 03:04:25,433 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-16 03:04:25,434 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse13 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse7 ((_ sign_extend 32) (_ bv0 32))) (.cse9 (bvneg .cse13)) (.cse14 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) .cse14)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse8 (bvsge .cse14 (_ bv0 32))) (.cse4 (bvsle .cse14 (_ bv2 32))) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse6 (= .cse7 (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) .cse9 (bvneg (bvmul (bvmul .cse13 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0))))) (or (let ((.cse0 (bvadd .cse7 .cse1))) (and (= ULTIMATE.start_main_~y~0 .cse0) (bvslt (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse2) .cse3 (= ULTIMATE.start_main_~c~0 .cse0) .cse4 .cse5 .cse6)) (and (= .cse7 ULTIMATE.start_main_~y~0) (= .cse7 ULTIMATE.start_main_~c~0) (= .cse7 ULTIMATE.start_main_~x~0) .cse3 .cse8 (not (bvslt (bvadd (bvmul .cse1 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse2)) .cse5) (and (not (bvslt ULTIMATE.start_main_~c~0 .cse2)) (= .cse7 (bvadd .cse9 (bvmul .cse2 ULTIMATE.start_main_~y~0))) .cse3 .cse8 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse11 ((_ sign_extend 32) (_ bv1 32))) (.cse10 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse10)) (bvslt (bvadd .cse11 ULTIMATE.start_main_~c~0) .cse10) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (let ((.cse12 (bvadd .cse11 ULTIMATE.start_main_~y~0))) (bvmul .cse12 .cse12))) (bvmul .cse10 .cse11) (bvmul .cse10 ULTIMATE.start_main_~y~0)))))) .cse4 .cse5 .cse6))))) [2021-10-16 03:04:25,434 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-16 03:04:25,434 INFO L860 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2021-10-16 03:04:25,434 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-16 03:04:25,435 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ((_ sign_extend 32) (_ bv0 32)) (let ((.cse0 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (bvadd (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg .cse0) (bvneg (bvmul (bvmul .cse0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~x~0))))) [2021-10-16 03:04:25,435 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-16 03:04:25,435 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-16 03:04:25,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:04:25,447 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:04:25,451 INFO L168 Benchmark]: Toolchain (without parser) took 295043.57 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 54.2 MB in the beginning and 63.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 50.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:04:25,451 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 50.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:04:25,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 69.2 MB. Free memory was 54.0 MB in the beginning and 54.1 MB in the end (delta: -104.0 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:04:25,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.08 ms. Allocated memory is still 69.2 MB. Free memory was 54.1 MB in the beginning and 52.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:04:25,453 INFO L168 Benchmark]: Boogie Preprocessor took 31.54 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 51.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:04:25,454 INFO L168 Benchmark]: RCFGBuilder took 1564.13 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 41.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:04:25,454 INFO L168 Benchmark]: TraceAbstraction took 293044.47 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 40.7 MB in the beginning and 63.4 MB in the end (delta: -22.6 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:04:25,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 69.2 MB. Free memory was 50.4 MB in the beginning and 50.4 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 69.2 MB. Free memory was 54.0 MB in the beginning and 54.1 MB in the end (delta: -104.0 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.08 ms. Allocated memory is still 69.2 MB. Free memory was 54.1 MB in the beginning and 52.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.54 ms. Allocated memory is still 69.2 MB. Free memory was 52.5 MB in the beginning and 51.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1564.13 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 41.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 293044.47 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 40.7 MB in the beginning and 63.4 MB in the end (delta: -22.6 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 292966.8ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 14.8ms, AutomataDifference: 93940.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 38933.8ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 119 SDslu, 95 SDs, 0 SdLazy, 159 SolverSat, 115 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 19346.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 167422.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 50.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 17 NumberOfFragments, 453 HoareAnnotationTreeSize, 5 FomulaSimplifications, 355 FormulaSimplificationTreeSizeReduction, 160.6ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 459 FormulaSimplificationTreeSizeReductionInter, 38766.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 118.5ms SsaConstructionTime, 6941.3ms SatisfiabilityAnalysisTime, 149417.7ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 312 ConstructedInterpolants, 6 QuantifiedInterpolants, 4395 SizeOfPredicates, 44 NumberOfNonLiveVariables, 544 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 126/330 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:04:25,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf14b332-7f20-4070-a6f7-4fd69692d641/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...