./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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 ed46dd72b47544e751c43723d7d519a92e121aab ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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 ed46dd72b47544e751c43723d7d519a92e121aab ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:26,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:26,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:26,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:26,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:26,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:26,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:26,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:26,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:26,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:26,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:26,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:26,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:26,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:26,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:26,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:26,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:26,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:26,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:26,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:26,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:26,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:26,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:26,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:26,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:26,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:26,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:26,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:26,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:26,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:26,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:26,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:26,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:26,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:26,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:26,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:26,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:26,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:26,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:26,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:26,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:26,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:26,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:26,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:26,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:26,253 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:26,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:26,254 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:26,254 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:26,255 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:26,255 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:26,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:26,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:26,256 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:26,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:26,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:26,258 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:26,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:26,259 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:26,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:26,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:26,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:26,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:26,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:26,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:26,262 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:26,262 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:26,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:26,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:26,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:26,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:26,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:26,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:26,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:26,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:26,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:26,266 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:26,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:26,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:26,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:26,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:26,268 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed46dd72b47544e751c43723d7d519a92e121aab [2021-10-16 01:59:26,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:26,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:26,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:26,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:26,571 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:26,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-16 01:59:26,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/475ed2bf8/4b0b5d3b99be459fb06f0276bc2e6078/FLAG30a91b2e6 [2021-10-16 01:59:27,174 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:27,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-16 01:59:27,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/475ed2bf8/4b0b5d3b99be459fb06f0276bc2e6078/FLAG30a91b2e6 [2021-10-16 01:59:27,526 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/475ed2bf8/4b0b5d3b99be459fb06f0276bc2e6078 [2021-10-16 01:59:27,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:27,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:27,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:27,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:27,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:27,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d66cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27, skipping insertion in model container [2021-10-16 01:59:27,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:27,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:27,711 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-16 01:59:27,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:27,750 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:27,762 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-16 01:59:27,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:27,796 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:27,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27 WrapperNode [2021-10-16 01:59:27,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:27,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:27,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:27,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:27,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:27,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:27,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:27,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:27,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:27,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:27,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:27,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:27,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (1/1) ... [2021-10-16 01:59:27,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:27,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:27,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:27,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:30,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:30,809 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 01:59:30,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:30 BoogieIcfgContainer [2021-10-16 01:59:30,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:30,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:30,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:30,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:30,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:27" (1/3) ... [2021-10-16 01:59:30,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b8d59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:30, skipping insertion in model container [2021-10-16 01:59:30,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:27" (2/3) ... [2021-10-16 01:59:30,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b8d59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:30, skipping insertion in model container [2021-10-16 01:59:30,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:30" (3/3) ... [2021-10-16 01:59:30,821 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-10-16 01:59:30,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:30,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-16 01:59:30,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:30,882 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 01:59:30,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-16 01:59:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 43 states have internal predecessors, (58), 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 01:59:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 01:59:30,905 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:30,905 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 01:59:30,906 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:30,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1143465249, now seen corresponding path program 1 times [2021-10-16 01:59:30,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:30,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194764188] [2021-10-16 01:59:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:30,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:31,065 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 01:59:31,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:31,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194764188] [2021-10-16 01:59:31,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194764188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:31,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:31,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 01:59:31,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021600199] [2021-10-16 01:59:31,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:31,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:31,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:31,107 INFO L87 Difference]: Start difference. First operand has 44 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 43 states have internal predecessors, (58), 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 3.0) internal successors, (6), 2 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 01:59:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:31,137 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2021-10-16 01:59:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:31,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 6 [2021-10-16 01:59:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:31,150 INFO L225 Difference]: With dead ends: 84 [2021-10-16 01:59:31,151 INFO L226 Difference]: Without dead ends: 42 [2021-10-16 01:59:31,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 01:59:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-16 01:59:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-16 01:59:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 41 states have internal predecessors, (45), 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 01:59:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-10-16 01:59:31,210 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 6 [2021-10-16 01:59:31,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:31,211 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-10-16 01:59:31,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 01:59:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-10-16 01:59:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 01:59:31,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:31,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:31,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:31,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash 651938503, now seen corresponding path program 1 times [2021-10-16 01:59:31,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:31,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865060385] [2021-10-16 01:59:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:31,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:31,305 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 01:59:31,305 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:31,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865060385] [2021-10-16 01:59:31,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865060385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:31,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:31,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 01:59:31,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44249706] [2021-10-16 01:59:31,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 01:59:31,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 01:59:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:59:31,310 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 01:59:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:31,333 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2021-10-16 01:59:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:59:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 01:59:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:31,335 INFO L225 Difference]: With dead ends: 82 [2021-10-16 01:59:31,335 INFO L226 Difference]: Without dead ends: 44 [2021-10-16 01:59:31,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 01:59:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-16 01:59:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-16 01:59:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 43 states have internal predecessors, (47), 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 01:59:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-10-16 01:59:31,344 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 7 [2021-10-16 01:59:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:31,344 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-10-16 01:59:31,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 01:59:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-10-16 01:59:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 01:59:31,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:31,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 01:59:31,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1215948133, now seen corresponding path program 1 times [2021-10-16 01:59:31,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:31,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040894246] [2021-10-16 01:59:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:31,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:31,690 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 01:59:31,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:31,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040894246] [2021-10-16 01:59:31,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040894246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:31,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:31,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 01:59:31,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036060517] [2021-10-16 01:59:31,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:59:31,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:59:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:31,701 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 01:59:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:40,243 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2021-10-16 01:59:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:59:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-16 01:59:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:40,246 INFO L225 Difference]: With dead ends: 87 [2021-10-16 01:59:40,246 INFO L226 Difference]: Without dead ends: 69 [2021-10-16 01:59:40,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:59:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-16 01:59:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2021-10-16 01:59:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 60 states have internal predecessors, (68), 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 01:59:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-10-16 01:59:40,258 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 8 [2021-10-16 01:59:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:40,259 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-10-16 01:59:40,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 01:59:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-10-16 01:59:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:40,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:40,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:40,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 01:59:40,261 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 960330495, now seen corresponding path program 1 times [2021-10-16 01:59:40,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:40,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31725879] [2021-10-16 01:59:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:40,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:40,279 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 01:59:40,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77664548] [2021-10-16 01:59:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:40,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:40,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:40,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:40,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 01:59:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:40,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:59:40,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:40,461 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 01:59:40,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:40,513 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 01:59:40,513 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:40,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31725879] [2021-10-16 01:59:40,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 01:59:40,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77664548] [2021-10-16 01:59:40,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77664548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:40,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-16 01:59:40,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987929948] [2021-10-16 01:59:40,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 01:59:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 01:59:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 01:59:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:40,517 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 01:59:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:40,551 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2021-10-16 01:59:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:59:40,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-10-16 01:59:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:40,554 INFO L225 Difference]: With dead ends: 66 [2021-10-16 01:59:40,554 INFO L226 Difference]: Without dead ends: 62 [2021-10-16 01:59:40,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 01:59:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-16 01:59:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-10-16 01:59:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 60 states have internal predecessors, (67), 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 01:59:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2021-10-16 01:59:40,565 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 9 [2021-10-16 01:59:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:40,566 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2021-10-16 01:59:40,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 01:59:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2021-10-16 01:59:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:59:40,567 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:40,567 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:40,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:40,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:40,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash 975471712, now seen corresponding path program 1 times [2021-10-16 01:59:40,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:40,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946935716] [2021-10-16 01:59:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:40,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:40,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 01:59:40,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946935716] [2021-10-16 01:59:40,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946935716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 01:59:40,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057914380] [2021-10-16 01:59:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:40,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:40,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:40,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 01:59:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 01:59:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:40,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:59:40,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:41,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:41,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057914380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 01:59:41,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1788670200] [2021-10-16 01:59:41,135 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-16 01:59:41,135 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 01:59:41,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 01:59:41,146 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 01:59:41,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 01:59:41,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:41,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 01:59:41,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 01:59:41,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 01:59:41,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-10-16 01:59:41,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:41,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:41,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 01:59:41,280 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 01:59:41,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:59:41,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 01:59:41,284 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:41,322 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 01:59:41,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:41,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 01:59:41,325 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 01:59:41,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 01:59:41,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 01:59:41,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-16 01:59:41,362 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 01:59:41,363 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:294, output treesize:149 [2021-10-16 01:59:41,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:41,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 01:59:41,587 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_18| 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 01:59:41,591 INFO L168 Benchmark]: Toolchain (without parser) took 14061.43 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 63.7 MB in the beginning and 109.4 MB in the end (delta: -45.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,592 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:41,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.32 ms. Allocated memory is still 102.8 MB. Free memory was 63.5 MB in the beginning and 76.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,594 INFO L168 Benchmark]: Boogie Preprocessor took 41.20 ms. Allocated memory is still 102.8 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,594 INFO L168 Benchmark]: RCFGBuilder took 2919.57 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 57.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,595 INFO L168 Benchmark]: TraceAbstraction took 10776.63 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 57.1 MB in the beginning and 109.4 MB in the end (delta: -52.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:41,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 102.8 MB. Free memory is still 80.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.32 ms. Allocated memory is still 102.8 MB. Free memory was 63.5 MB in the beginning and 76.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 102.8 MB. Free memory was 76.6 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.20 ms. Allocated memory is still 102.8 MB. Free memory was 74.6 MB in the beginning and 73.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2919.57 ms. Allocated memory is still 102.8 MB. Free memory was 73.3 MB in the beginning and 57.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10776.63 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 57.1 MB in the beginning and 109.4 MB in the end (delta: -52.3 MB). Peak memory consumption was 50.9 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_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: 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 01:59:41,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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 01:59:44,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:44,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:44,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:44,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:44,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:44,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:44,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:44,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:44,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:44,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:44,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:44,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:44,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:44,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:44,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:44,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:44,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:44,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:44,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:44,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:44,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:44,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:44,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:44,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:44,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:44,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:44,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:44,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:44,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:44,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:44,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:44,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:44,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:44,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:44,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:44,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:44,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:44,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:44,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:44,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:44,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:44,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:44,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:44,466 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:44,466 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:44,467 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:44,467 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:44,467 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:44,468 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:44,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:44,472 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:44,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:44,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:44,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:44,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:44,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:44,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:44,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:44,474 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:44,475 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:44,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:44,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:44,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:44,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:44,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:44,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:44,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:44,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:44,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:44,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:44,478 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:44,479 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:44,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:44,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:44,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:44,480 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed46dd72b47544e751c43723d7d519a92e121aab [2021-10-16 01:59:44,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:44,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:44,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:44,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:44,962 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:44,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-16 01:59:45,038 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/97dc4e615/7050d7ccfa0b4b058e457e600cdf1669/FLAGaf6ead4f5 [2021-10-16 01:59:45,629 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:45,630 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-10-16 01:59:45,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/97dc4e615/7050d7ccfa0b4b058e457e600cdf1669/FLAGaf6ead4f5 [2021-10-16 01:59:45,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/data/97dc4e615/7050d7ccfa0b4b058e457e600cdf1669 [2021-10-16 01:59:45,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:45,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:46,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:46,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:46,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:46,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:45" (1/1) ... [2021-10-16 01:59:46,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f218ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46, skipping insertion in model container [2021-10-16 01:59:46,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:45" (1/1) ... [2021-10-16 01:59:46,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:46,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:46,260 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-16 01:59:46,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:46,330 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:46,355 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_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[525,538] [2021-10-16 01:59:46,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:46,427 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:46,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46 WrapperNode [2021-10-16 01:59:46,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:46,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:46,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:46,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:46,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:46,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:46,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:46,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:46,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:46,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:46,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:46,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:46,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (1/1) ... [2021-10-16 01:59:46,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:46,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:46,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:46,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:46,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:46,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:48,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:48,202 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-16 01:59:48,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:48 BoogieIcfgContainer [2021-10-16 01:59:48,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:48,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:48,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:48,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:48,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:45" (1/3) ... [2021-10-16 01:59:48,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb96884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:48, skipping insertion in model container [2021-10-16 01:59:48,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:46" (2/3) ... [2021-10-16 01:59:48,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb96884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:48, skipping insertion in model container [2021-10-16 01:59:48,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:48" (3/3) ... [2021-10-16 01:59:48,214 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-10-16 01:59:48,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:48,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-16 01:59:48,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:48,282 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 01:59:48,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-16 01:59:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 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 01:59:48,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 01:59:48,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:48,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:48,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:48,310 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-10-16 01:59:48,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:48,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70912032] [2021-10-16 01:59:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:48,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:48,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:48,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:48,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 01:59:48,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:48,522 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 01:59:48,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:48,578 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 01:59:48,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:48,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70912032] [2021-10-16 01:59:48,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70912032] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:48,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:48,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 01:59:48,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391518824] [2021-10-16 01:59:48,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 01:59:48,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:48,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 01:59:48,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:48,609 INFO L87 Difference]: Start difference. First operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 01:59:48,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:48,629 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-10-16 01:59:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 01:59:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-16 01:59:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:48,640 INFO L225 Difference]: With dead ends: 97 [2021-10-16 01:59:48,640 INFO L226 Difference]: Without dead ends: 46 [2021-10-16 01:59:48,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 01:59:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-16 01:59:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-16 01:59:48,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 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 01:59:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-10-16 01:59:48,690 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-10-16 01:59:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:48,691 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-10-16 01:59:48,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 01:59:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-10-16 01:59:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 01:59:48,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:48,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:48,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:48,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:48,906 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:48,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-10-16 01:59:48,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:48,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020370478] [2021-10-16 01:59:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:48,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:48,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:48,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 01:59:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:48,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 01:59:48,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:49,091 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 01:59:49,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:49,225 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 01:59:49,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:49,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020370478] [2021-10-16 01:59:49,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020370478] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:49,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:49,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 01:59:49,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585268577] [2021-10-16 01:59:49,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:49,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:49,230 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 01:59:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:49,344 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-10-16 01:59:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 01:59:49,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 01:59:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:49,349 INFO L225 Difference]: With dead ends: 91 [2021-10-16 01:59:49,350 INFO L226 Difference]: Without dead ends: 52 [2021-10-16 01:59:49,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:59:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-16 01:59:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-16 01:59:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 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 01:59:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-10-16 01:59:49,374 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 10 [2021-10-16 01:59:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:49,374 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-10-16 01:59:49,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 01:59:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-10-16 01:59:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 01:59:49,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:49,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:49,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:49,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:49,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-10-16 01:59:49,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:49,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512690522] [2021-10-16 01:59:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:49,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:49,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:49,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 01:59:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:49,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 01:59:49,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:50,284 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 01:59:50,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:50,628 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 01:59:50,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:50,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512690522] [2021-10-16 01:59:50,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512690522] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:50,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:50,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-10-16 01:59:50,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911757059] [2021-10-16 01:59:50,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 01:59:50,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 01:59:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-16 01:59:50,637 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 01:59:56,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:56,427 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2021-10-16 01:59:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-16 01:59:56,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 11 [2021-10-16 01:59:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:56,446 INFO L225 Difference]: With dead ends: 156 [2021-10-16 01:59:56,446 INFO L226 Difference]: Without dead ends: 113 [2021-10-16 01:59:56,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1504.5ms TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2021-10-16 01:59:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-16 01:59:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2021-10-16 01:59:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 70 states have internal predecessors, (80), 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 01:59:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-10-16 01:59:56,463 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 11 [2021-10-16 01:59:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:56,463 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-10-16 01:59:56,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 01:59:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-10-16 01:59:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 01:59:56,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:56,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:56,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:56,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:56,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:56,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-10-16 01:59:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279669588] [2021-10-16 01:59:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:56,680 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:56,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:56,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 01:59:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:56,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:59:56,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:56,921 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 01:59:56,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:57,067 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 01:59:57,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:57,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279669588] [2021-10-16 01:59:57,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279669588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:57,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:57,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-16 01:59:57,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558836978] [2021-10-16 01:59:57,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 01:59:57,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 01:59:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:57,072 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 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 01:59:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:57,165 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-10-16 01:59:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 01:59:57,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 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 12 [2021-10-16 01:59:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:57,167 INFO L225 Difference]: With dead ends: 75 [2021-10-16 01:59:57,167 INFO L226 Difference]: Without dead ends: 71 [2021-10-16 01:59:57,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 01:59:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-16 01:59:57,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-16 01:59:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 70 states have internal predecessors, (79), 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 01:59:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-10-16 01:59:57,179 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 12 [2021-10-16 01:59:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:57,180 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-10-16 01:59:57,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 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 01:59:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-10-16 01:59:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 01:59:57,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:57,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 01:59:57,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:57,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 01:59:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:57,400 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-10-16 01:59:57,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:57,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111929813] [2021-10-16 01:59:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:57,401 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:57,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:57,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 01:59:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:57,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 01:59:57,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:57,862 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 01:59:57,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:05,150 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 02:00:05,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:05,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111929813] [2021-10-16 02:00:05,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111929813] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:05,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:00:05,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:00:05,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224904484] [2021-10-16 02:00:05,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:00:05,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:05,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:00:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:00:05,153 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 02:00:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:12,267 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-10-16 02:00:12,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:00:12,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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) Word has length 15 [2021-10-16 02:00:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:12,268 INFO L225 Difference]: With dead ends: 110 [2021-10-16 02:00:12,269 INFO L226 Difference]: Without dead ends: 84 [2021-10-16 02:00:12,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1395.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:00:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-16 02:00:12,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2021-10-16 02:00:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.328125) internal successors, (85), 72 states have internal predecessors, (85), 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 02:00:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2021-10-16 02:00:12,279 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 15 [2021-10-16 02:00:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:12,279 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2021-10-16 02:00:12,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 02:00:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2021-10-16 02:00:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:00:12,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:12,280 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:12,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:12,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:00:12,491 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 02:00:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2016208531, now seen corresponding path program 1 times [2021-10-16 02:00:12,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:12,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505654099] [2021-10-16 02:00:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:12,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:12,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:12,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:00:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:12,807 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 02:00:12,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:13,054 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 02:00:13,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:13,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505654099] [2021-10-16 02:00:13,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505654099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:13,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [11642828] [2021-10-16 02:00:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:13,058 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:13,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:13,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:00:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:13,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:13,388 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 02:00:13,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:13,521 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 02:00:13,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [11642828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:13,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837996720] [2021-10-16 02:00:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:13,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:13,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:13,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:00:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:13,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:13,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:13,759 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 02:00:13,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:13,880 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 02:00:13,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837996720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:13,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:13,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-16 02:00:13,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949072189] [2021-10-16 02:00:13,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:00:13,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:00:13,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:00:13,882 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 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 02:00:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:14,369 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2021-10-16 02:00:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-16 02:00:14,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 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 16 [2021-10-16 02:00:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:14,372 INFO L225 Difference]: With dead ends: 162 [2021-10-16 02:00:14,372 INFO L226 Difference]: Without dead ends: 106 [2021-10-16 02:00:14,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 525.0ms TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:00:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-16 02:00:14,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 81. [2021-10-16 02:00:14,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 80 states have internal predecessors, (98), 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 02:00:14,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2021-10-16 02:00:14,388 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 16 [2021-10-16 02:00:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:14,388 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2021-10-16 02:00:14,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 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 02:00:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2021-10-16 02:00:14,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:00:14,389 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:14,389 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:14,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:14,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:14,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:15,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:15,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 02:00:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:15,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1933650643, now seen corresponding path program 1 times [2021-10-16 02:00:15,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:15,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175718829] [2021-10-16 02:00:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:15,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:15,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:15,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:15,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:00:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:15,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:00:15,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:16,052 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 02:00:16,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:18,080 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 02:00:18,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:18,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175718829] [2021-10-16 02:00:18,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175718829] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:18,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1955516410] [2021-10-16 02:00:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:18,081 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:18,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:18,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:18,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:00:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:18,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:00:18,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:00:18,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:00:19,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1955516410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:00:19,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:00:19,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [8, 6] total 13 [2021-10-16 02:00:19,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483457189] [2021-10-16 02:00:19,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:00:19,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:19,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:00:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:00:19,517 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 02:00:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:35,671 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2021-10-16 02:00:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:00:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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) Word has length 17 [2021-10-16 02:00:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:35,676 INFO L225 Difference]: With dead ends: 121 [2021-10-16 02:00:35,676 INFO L226 Difference]: Without dead ends: 112 [2021-10-16 02:00:35,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1541.2ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:00:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-16 02:00:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2021-10-16 02:00:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 93 states have internal predecessors, (112), 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 02:00:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-10-16 02:00:35,698 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 17 [2021-10-16 02:00:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:35,698 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-10-16 02:00:35,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 02:00:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-10-16 02:00:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:00:35,700 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:00:35,700 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:00:35,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:35,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:36,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:36,115 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-10-16 02:00:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:00:36,115 INFO L82 PathProgramCache]: Analyzing trace with hash 281322360, now seen corresponding path program 1 times [2021-10-16 02:00:36,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:00:36,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940234822] [2021-10-16 02:00:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:36,116 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:00:36,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:00:36,117 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:00:36,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:00:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:36,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:36,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:00:36,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:00:36,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:00:36,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940234822] [2021-10-16 02:00:36,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940234822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:36,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549507336] [2021-10-16 02:00:36,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:36,840 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:00:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:00:36,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:00:36,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:00:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:37,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:00:37,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:00:37,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-16 02:00:37,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [549507336] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:37,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576820623] [2021-10-16 02:00:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:00:37,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:00:37,414 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:00:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:00:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:00:37,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:00:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:00:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:37,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:00:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:00:38,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576820623] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:00:38,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:00:38,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 9] total 20 [2021-10-16 02:00:38,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456264026] [2021-10-16 02:00:38,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-16 02:00:38,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:00:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-16 02:00:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-16 02:00:38,807 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 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 02:00:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:00:39,072 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-10-16 02:00:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:00:39,072 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 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 02:00:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:00:39,073 INFO L225 Difference]: With dead ends: 94 [2021-10-16 02:00:39,073 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:00:39,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1003.3ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-16 02:00:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:00:39,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:00:39,074 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 02:00:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:00:39,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-16 02:00:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:00:39,074 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:00:39,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 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 02:00:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:00:39,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:00:39,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,082 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:00:39,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:39,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:39,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:00:39,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:00:39,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:00:39,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:39,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:00:41,260 INFO L860 garLoopResultBuilder]: At program point L60(lines 20 61) the Hoare annotation is: true [2021-10-16 02:00:41,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,260 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-10-16 02:00:41,260 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2021-10-16 02:00:41,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,260 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:00:41,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:00:41,261 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,261 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,261 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,261 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,261 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,261 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,261 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,262 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,262 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,262 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,262 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,262 INFO L853 garLoopResultBuilder]: At program point L12-17(lines 46 47) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ULTIMATE.start_main_~p~0 (_ bv0 32)) (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) [2021-10-16 02:00:41,262 INFO L857 garLoopResultBuilder]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,262 INFO L853 garLoopResultBuilder]: At program point L12-20(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~p~0 (_ bv0 32))) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0))) (or (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) .cse0 .cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse2 (bvslt ((_ zero_extend 32) ULTIMATE.start_main_~n~0) (bvsdiv (_ bv4294967295 64) ((_ sign_extend 32) (_ bv4 32))))) (and .cse0 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) .cse2))) [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,263 INFO L853 garLoopResultBuilder]: At program point L12-23(lines 11 17) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~p~0 (_ bv0 32)))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) .cse1 (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (and (= ULTIMATE.start_main_~h~0 (_ bv0 32)) .cse0 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 (bvslt ((_ zero_extend 32) ULTIMATE.start_main_~n~0) (bvsdiv (_ bv4294967295 64) ((_ sign_extend 32) (_ bv4 32))))))) [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:00:41,263 INFO L860 garLoopResultBuilder]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,263 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2021-10-16 02:00:41,264 INFO L857 garLoopResultBuilder]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,265 INFO L857 garLoopResultBuilder]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:00:41,265 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2021-10-16 02:00:41,265 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,265 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2021-10-16 02:00:41,265 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~h~0 (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse2 (= ULTIMATE.start_main_~p~0 (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse4 (bvslt ((_ zero_extend 32) ULTIMATE.start_main_~n~0) (bvsdiv (_ bv4294967295 64) ((_ sign_extend 32) (_ bv4 32)))))) (or (and .cse0 (= ~counter~0 (_ bv1 32)) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (= ~counter~0 (_ bv0 32)) .cse2 .cse3 .cse4) (and (= (_ bv2 32) ~counter~0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2021-10-16 02:00:41,265 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-16 02:00:41,266 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:00:41,267 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,267 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-16 02:00:41,267 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:00:41,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:00:41,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:00:41 BoogieIcfgContainer [2021-10-16 02:00:41,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:00:41,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:00:41,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:00:41,293 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:00:41,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:48" (3/4) ... [2021-10-16 02:00:41,297 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:00:41,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-16 02:00:41,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:00:41,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:41,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:00:41,350 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:00:41,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:00:41,351 INFO L168 Benchmark]: Toolchain (without parser) took 55351.64 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.4 MB in the beginning and 27.0 MB in the end (delta: 449.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,352 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:41,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.55 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.3 MB in the beginning and 45.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 43.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:00:41,353 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,354 INFO L168 Benchmark]: RCFGBuilder took 1692.29 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 43.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,354 INFO L168 Benchmark]: TraceAbstraction took 53085.91 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 30.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,355 INFO L168 Benchmark]: Witness Printer took 57.30 ms. Allocated memory is still 62.9 MB. Free memory was 30.7 MB in the beginning and 27.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:00:41,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 50.3 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.55 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.3 MB in the beginning and 45.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.90 ms. Allocated memory is still 62.9 MB. Free memory was 45.5 MB in the beginning and 43.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 42.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1692.29 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 43.7 MB in the end (delta: -1.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 53085.91 ms. Allocated memory is still 62.9 MB. Free memory was 43.2 MB in the beginning and 30.7 MB in the end (delta: 12.5 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Witness Printer took 57.30 ms. Allocated memory is still 62.9 MB. Free memory was 30.7 MB in the beginning and 27.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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, 50 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 52997.9ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 15.4ms, AutomataDifference: 30119.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1574.2ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 325 SDtfs, 434 SDslu, 1055 SDs, 0 SdLazy, 450 SolverSat, 194 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 26580.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 6176.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=7, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 114.9ms AutomataMinimizationTime, 8 MinimizatonAttempts, 97 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 26 NumberOfFragments, 300 HoareAnnotationTreeSize, 11 FomulaSimplifications, 131 FormulaSimplificationTreeSizeReduction, 174.6ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 136 FormulaSimplificationTreeSizeReductionInter, 1392.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 91.5ms SsaConstructionTime, 811.6ms SatisfiabilityAnalysisTime, 16245.1ms InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 402 ConstructedInterpolants, 9 QuantifiedInterpolants, 2167 SizeOfPredicates, 43 NumberOfNonLiveVariables, 645 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 152/270 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 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((cond == 1bv32 && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n) || ((((h == 0bv32 && cond == 1bv32) && !(cond == 0bv32)) && p == 0bv32) && ~bvslt32(~zero_extendFrom32To64(n), ~bvsdiv64(4294967295bv64, ~sign_extendFrom8To32(4bv32)))) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && p == 0bv32) && cond == 1bv32) && r == n) && ~bvslt32(~zero_extendFrom32To64(n), ~bvsdiv64(4294967295bv64, ~sign_extendFrom8To32(4bv32)))) || (((((cond == 1bv32 && q == 1bv32) && !(cond == 0bv32)) && p == 0bv32) && !~bvule32(q, r)) && r == n) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((h == 0bv32 && counter == 1bv32) && cond == 1bv32) && p == 0bv32) && r == n) && ~bvslt32(~zero_extendFrom32To64(n), ~bvsdiv64(4294967295bv64, ~sign_extendFrom8To32(4bv32)))) || ((((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && counter == 0bv32) && p == 0bv32) && r == n) && ~bvslt32(~zero_extendFrom32To64(n), ~bvsdiv64(4294967295bv64, ~sign_extendFrom8To32(4bv32))))) || (((((2bv32 == counter && h == 0bv32) && cond == 1bv32) && p == 0bv32) && r == n) && ~bvslt32(~zero_extendFrom32To64(n), ~bvsdiv64(4294967295bv64, ~sign_extendFrom8To32(4bv32)))) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((h == 0bv32 && cond == 1bv32) && q == 1bv32) && p == 0bv32) && !~bvule32(q, r)) && cond == 1bv32) && r == n RESULT: Ultimate proved your program to be correct! [2021-10-16 02:00:41,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7030702c-be1d-4b7a-94a8-5cd495d0a5f8/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...