./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8 --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 e4be225ddf5726de15d96df20c7b0d434801c413 ........................................................................................................................................................................................................................................................................................................................................................ 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_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8 --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 e4be225ddf5726de15d96df20c7b0d434801c413 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:29,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:29,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:29,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:29,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:29,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:29,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:29,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:29,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:29,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:29,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:29,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:29,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:29,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:29,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:29,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:29,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:29,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:29,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:29,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:29,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:29,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:29,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:29,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:29,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:29,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:29,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:29,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:29,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:29,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:29,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:29,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:29,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:29,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:29,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:29,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:29,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:29,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:29,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:29,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:29,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:29,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:28:29,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:29,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:29,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:29,871 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:29,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:29,872 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:29,872 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:28:29,872 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:29,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:29,878 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:28:29,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:28:29,880 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:29,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:28:29,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:28:29,880 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:28:29,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:29,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:29,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:28:29,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:29,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:29,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:29,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:29,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:29,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:29,883 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:29,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:29,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:29,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:29,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:29,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:29,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:29,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:29,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:29,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:29,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:28:29,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:28:29,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:29,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:29,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:29,887 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_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4be225ddf5726de15d96df20c7b0d434801c413 [2021-10-13 07:28:30,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:30,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:30,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:30,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:30,175 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:30,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:30,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/8869c7922/b3664a4781cf4b93833a6d903877299e/FLAG5a8e0dfc1 [2021-10-13 07:28:30,683 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:30,684 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:30,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/8869c7922/b3664a4781cf4b93833a6d903877299e/FLAG5a8e0dfc1 [2021-10-13 07:28:31,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/8869c7922/b3664a4781cf4b93833a6d903877299e [2021-10-13 07:28:31,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:31,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:31,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:31,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:31,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:31,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bcf04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31, skipping insertion in model container [2021-10-13 07:28:31,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:31,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:31,299 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_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-13 07:28:31,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:31,320 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:31,339 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_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-13 07:28:31,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:31,360 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:31,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31 WrapperNode [2021-10-13 07:28:31,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:31,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:31,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:31,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:31,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:31,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:31,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:31,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:31,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:31,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:31,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:31,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:31,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (1/1) ... [2021-10-13 07:28:31,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:31,516 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:31,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:28:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:31,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:31,945 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:28:31,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:31 BoogieIcfgContainer [2021-10-13 07:28:31,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:31,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:31,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:31,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:31,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:31" (1/3) ... [2021-10-13 07:28:31,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a1573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:31, skipping insertion in model container [2021-10-13 07:28:31,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:31" (2/3) ... [2021-10-13 07:28:31,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192a1573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:31, skipping insertion in model container [2021-10-13 07:28:31,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:31" (3/3) ... [2021-10-13 07:28:31,955 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:31,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:31,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:28:32,022 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:32,029 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 [2021-10-13 07:28:32,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:28:32,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 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) [2021-10-13 07:28:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:28:32,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:32,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:32,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:32,054 INFO L82 PathProgramCache]: Analyzing trace with hash -255100683, now seen corresponding path program 1 times [2021-10-13 07:28:32,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:32,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767350198] [2021-10-13 07:28:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:32,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:32,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:32,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767350198] [2021-10-13 07:28:32,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767350198] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:32,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:32,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 07:28:32,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412469885] [2021-10-13 07:28:32,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:28:32,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:28:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:28:32,412 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 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) Second operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:32,487 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2021-10-13 07:28:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:28:32,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:28:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:32,496 INFO L225 Difference]: With dead ends: 22 [2021-10-13 07:28:32,496 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:28:32,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:28:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:28:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 07:28:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-10-13 07:28:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-13 07:28:32,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2021-10-13 07:28:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:32,539 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-13 07:28:32,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-13 07:28:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:28:32,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:32,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:32,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:28:32,541 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:32,545 INFO L82 PathProgramCache]: Analyzing trace with hash 683478881, now seen corresponding path program 1 times [2021-10-13 07:28:32,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:32,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141020203] [2021-10-13 07:28:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:32,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:32,809 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141020203] [2021-10-13 07:28:32,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141020203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:28:32,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386015313] [2021-10-13 07:28:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:32,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:32,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:32,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:32,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:28:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:32,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:28:32,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:33,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:33,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386015313] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:33,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1583487882] [2021-10-13 07:28:33,739 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-10-13 07:28:33,739 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:28:33,748 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:28:33,754 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:28:33,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:28:33,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:33,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:28:33,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:33,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:28:33,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:28:33,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:33,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:33,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:33,892 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 [2021-10-13 07:28:33,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:28:33,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:28:33,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:33,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:28:33,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:33,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-10-13 07:28:33,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:28:33,949 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:128, output treesize:131 [2021-10-13 07:28:33,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:34,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-13 07:28:34,154 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_10| 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) [2021-10-13 07:28:34,158 INFO L168 Benchmark]: Toolchain (without parser) took 3075.10 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 55.8 MB in the beginning and 76.6 MB in the end (delta: -20.8 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:34,158 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:34,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.11 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 55.6 MB in the beginning and 94.6 MB in the end (delta: -39.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:34,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.13 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:34,160 INFO L168 Benchmark]: Boogie Preprocessor took 53.84 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:34,161 INFO L168 Benchmark]: RCFGBuilder took 476.21 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 75.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:34,161 INFO L168 Benchmark]: TraceAbstraction took 2207.50 ms. Allocated memory is still 119.5 MB. Free memory was 75.0 MB in the beginning and 76.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:34,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 72.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.11 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 55.6 MB in the beginning and 94.6 MB in the end (delta: -39.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.13 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.84 ms. Allocated memory is still 119.5 MB. Free memory was 92.9 MB in the beginning and 91.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 476.21 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 75.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2207.50 ms. Allocated memory is still 119.5 MB. Free memory was 75.0 MB in the beginning and 76.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 1.4 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_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: 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. [2021-10-13 07:28:34,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:36,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:36,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:36,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:36,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:36,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:36,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:36,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:36,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:36,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:36,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:36,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:36,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:36,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:36,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:36,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:36,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:36,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:36,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:36,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:36,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:36,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:36,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:36,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:36,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:36,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:36,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:36,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:36,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:36,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:36,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:36,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:36,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:36,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:36,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:36,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:36,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:36,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:36,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:36,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:36,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:36,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:28:36,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:36,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:36,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:36,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:36,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:36,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:36,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:36,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:36,707 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:36,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:36,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:36,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:36,709 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:28:36,710 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:28:36,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:36,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:36,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:36,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:36,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:36,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:28:36,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:36,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:36,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:36,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:36,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:36,712 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:28:36,712 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:36,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:36,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:36,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:36,713 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_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4be225ddf5726de15d96df20c7b0d434801c413 [2021-10-13 07:28:37,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:37,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:37,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:37,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:37,110 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:37,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:37,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/4e3d30551/45fa6d8194994be492d039b68648e8dd/FLAG9f48e1170 [2021-10-13 07:28:37,652 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:37,653 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:37,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/4e3d30551/45fa6d8194994be492d039b68648e8dd/FLAG9f48e1170 [2021-10-13 07:28:38,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/data/4e3d30551/45fa6d8194994be492d039b68648e8dd [2021-10-13 07:28:38,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:38,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:38,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:38,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:38,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:38,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7557ee8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38, skipping insertion in model container [2021-10-13 07:28:38,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:38,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:38,311 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_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-13 07:28:38,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:38,344 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:38,380 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_bb750435-11e5-4176-aa1f-3b020b153327/sv-benchmarks/c/loop-lit/gj2007.c.i.p+lhb-reducer.c[1613,1626] [2021-10-13 07:28:38,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:38,441 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:38,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38 WrapperNode [2021-10-13 07:28:38,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:38,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:38,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:38,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:38,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:38,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:38,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:38,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:38,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:38,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:38,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:38,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:38,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (1/1) ... [2021-10-13 07:28:38,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:38,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:38,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:28:38,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:38,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:38,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:38,949 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:28:38,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:38 BoogieIcfgContainer [2021-10-13 07:28:38,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:38,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:38,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:38,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:38,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:38" (1/3) ... [2021-10-13 07:28:38,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521f92fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:38, skipping insertion in model container [2021-10-13 07:28:38,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:38" (2/3) ... [2021-10-13 07:28:38,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521f92fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:38, skipping insertion in model container [2021-10-13 07:28:38,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:38" (3/3) ... [2021-10-13 07:28:38,957 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.c.i.p+lhb-reducer.c [2021-10-13 07:28:38,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:38,979 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:28:39,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:39,056 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 [2021-10-13 07:28:39,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:28:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) [2021-10-13 07:28:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:28:39,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:39,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:39,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:39,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:39,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1745867070, now seen corresponding path program 1 times [2021-10-13 07:28:39,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:39,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045183050] [2021-10-13 07:28:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:39,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:39,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:39,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:28:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:39,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:39,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:39,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:39,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045183050] [2021-10-13 07:28:39,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045183050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:39,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:39,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:39,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575524946] [2021-10-13 07:28:39,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:39,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:39,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:39,477 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-10-13 07:28:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:39,647 INFO L93 Difference]: Finished difference Result 52 states and 90 transitions. [2021-10-13 07:28:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:28:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 23 [2021-10-13 07:28:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:39,657 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:28:39,657 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 07:28:39,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 07:28:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-13 07:28:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2021-10-13 07:28:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-10-13 07:28:39,696 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 23 [2021-10-13 07:28:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:39,697 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-10-13 07:28:39,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-10-13 07:28:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-10-13 07:28:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:28:39,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:39,699 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:39,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:39,913 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:39,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2008089875, now seen corresponding path program 1 times [2021-10-13 07:28:39,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:39,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006228717] [2021-10-13 07:28:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:39,920 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:39,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:39,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:28:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:40,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:28:40,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:40,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:40,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:40,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:40,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006228717] [2021-10-13 07:28:40,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006228717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:40,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:40,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:28:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022415067] [2021-10-13 07:28:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:28:40,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:28:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:28:40,265 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-10-13 07:28:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:40,500 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2021-10-13 07:28:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 07:28:40,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 23 [2021-10-13 07:28:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:40,502 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:28:40,502 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 07:28:40,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:28:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 07:28:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-13 07:28:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-13 07:28:40,508 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2021-10-13 07:28:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:40,509 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-13 07:28:40,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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) [2021-10-13 07:28:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-13 07:28:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 07:28:40,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:40,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:40,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:40,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:40,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash -218545361, now seen corresponding path program 1 times [2021-10-13 07:28:40,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:40,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918582027] [2021-10-13 07:28:40,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:40,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:40,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:40,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:40,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:28:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:28:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:41,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:41,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:41,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918582027] [2021-10-13 07:28:41,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918582027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:41,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:41,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 07:28:41,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862447705] [2021-10-13 07:28:41,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 07:28:41,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 07:28:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:28:41,542 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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) [2021-10-13 07:28:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:42,706 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2021-10-13 07:28:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 07:28:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 23 [2021-10-13 07:28:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:42,708 INFO L225 Difference]: With dead ends: 51 [2021-10-13 07:28:42,708 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 07:28:42,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1176.0ms TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2021-10-13 07:28:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 07:28:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-10-13 07:28:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 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) [2021-10-13 07:28:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2021-10-13 07:28:42,716 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 23 [2021-10-13 07:28:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:42,717 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-10-13 07:28:42,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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) [2021-10-13 07:28:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2021-10-13 07:28:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 07:28:42,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:42,719 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:42,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:28:42,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:42,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:42,931 INFO L82 PathProgramCache]: Analyzing trace with hash -999311728, now seen corresponding path program 1 times [2021-10-13 07:28:42,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:42,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899104982] [2021-10-13 07:28:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:42,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:42,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:42,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:28:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:43,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:28:43,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:43,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:43,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:43,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899104982] [2021-10-13 07:28:43,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899104982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:43,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397681429] [2021-10-13 07:28:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:43,818 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:43,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:43,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:43,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:28:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:44,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:28:44,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:44,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:44,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397681429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:44,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488909631] [2021-10-13 07:28:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:44,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:44,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:44,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:44,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:28:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:44,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:28:44,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:44,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:45,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488909631] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:45,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:28:45,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 14] total 35 [2021-10-13 07:28:45,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125190489] [2021-10-13 07:28:45,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-13 07:28:45,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-13 07:28:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=815, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 07:28:45,615 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 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) [2021-10-13 07:28:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:47,116 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2021-10-13 07:28:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 07:28:47,116 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 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 45 [2021-10-13 07:28:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:47,118 INFO L225 Difference]: With dead ends: 94 [2021-10-13 07:28:47,118 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 07:28:47,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2176.8ms TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 07:28:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 07:28:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-13 07:28:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 69 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) [2021-10-13 07:28:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2021-10-13 07:28:47,149 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 45 [2021-10-13 07:28:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:47,149 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2021-10-13 07:28:47,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 35 states have internal predecessors, (74), 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) [2021-10-13 07:28:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2021-10-13 07:28:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-13 07:28:47,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:47,157 INFO L512 BasicCegarLoop]: trace histogram [23, 13, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:47,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:47,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:28:47,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-13 07:28:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:47,780 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:47,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1433093228, now seen corresponding path program 2 times [2021-10-13 07:28:47,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:47,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518617082] [2021-10-13 07:28:47,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:28:47,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:47,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:47,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:28:47,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:28:47,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:28:47,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 07:28:47,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:48,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:49,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:49,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518617082] [2021-10-13 07:28:49,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518617082] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:49,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1022521797] [2021-10-13 07:28:49,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:28:49,998 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:49,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:50,000 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:28:50,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:28:50,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:28:50,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 07:28:50,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:50,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:50,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1022521797] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:50,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572355480] [2021-10-13 07:28:50,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:28:50,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:50,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:50,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:28:51,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:28:51,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:28:51,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 07:28:51,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:51,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 266 proven. 182 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-13 07:28:54,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572355480] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:54,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:28:54,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 26] total 71 [2021-10-13 07:28:54,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269429504] [2021-10-13 07:28:54,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-13 07:28:54,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-13 07:28:54,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1473, Invalid=3497, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 07:28:54,155 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 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) [2021-10-13 07:29:00,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:00,869 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2021-10-13 07:29:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 07:29:00,869 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 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 69 [2021-10-13 07:29:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:00,871 INFO L225 Difference]: With dead ends: 142 [2021-10-13 07:29:00,871 INFO L226 Difference]: Without dead ends: 118 [2021-10-13 07:29:00,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 9644.3ms TimeCoverageRelationStatistics Valid=2854, Invalid=5888, Unknown=0, NotChecked=0, Total=8742 [2021-10-13 07:29:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-13 07:29:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-10-13 07:29:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 117 states have internal predecessors, (128), 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) [2021-10-13 07:29:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 128 transitions. [2021-10-13 07:29:00,887 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 128 transitions. Word has length 69 [2021-10-13 07:29:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:00,888 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 128 transitions. [2021-10-13 07:29:00,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 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) [2021-10-13 07:29:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 128 transitions. [2021-10-13 07:29:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-13 07:29:00,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:00,891 INFO L512 BasicCegarLoop]: trace histogram [47, 37, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:00,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 07:29:01,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:01,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:01,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:01,497 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:01,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:01,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1939872732, now seen corresponding path program 3 times [2021-10-13 07:29:01,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:01,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743309260] [2021-10-13 07:29:01,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:29:01,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:01,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:01,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:01,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:29:01,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-13 07:29:01,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:01,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:29:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:02,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:04,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:04,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743309260] [2021-10-13 07:29:04,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743309260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:04,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822939747] [2021-10-13 07:29:04,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:29:04,038 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:04,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:29:04,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-13 07:29:04,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:04,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:29:04,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:05,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:05,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822939747] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:05,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770971458] [2021-10-13 07:29:05,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:29:05,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:05,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:05,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:05,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 07:29:06,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-10-13 07:29:06,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:06,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 07:29:06,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:06,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 777 proven. 100 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2021-10-13 07:29:06,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770971458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:06,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:29:06,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13, 14, 13, 14] total 25 [2021-10-13 07:29:06,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902705917] [2021-10-13 07:29:06,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 07:29:06,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 07:29:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:29:06,930 INFO L87 Difference]: Start difference. First operand 118 states and 128 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) [2021-10-13 07:29:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:09,924 INFO L93 Difference]: Finished difference Result 166 states and 210 transitions. [2021-10-13 07:29:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 07:29:09,924 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) Word has length 117 [2021-10-13 07:29:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:09,926 INFO L225 Difference]: With dead ends: 166 [2021-10-13 07:29:09,926 INFO L226 Difference]: Without dead ends: 142 [2021-10-13 07:29:09,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3256.3ms TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 07:29:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-13 07:29:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-10-13 07:29:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0921985815602837) internal successors, (154), 141 states have internal predecessors, (154), 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) [2021-10-13 07:29:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2021-10-13 07:29:09,941 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 117 [2021-10-13 07:29:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:09,941 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2021-10-13 07:29:09,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) [2021-10-13 07:29:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2021-10-13 07:29:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 07:29:09,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:09,944 INFO L512 BasicCegarLoop]: trace histogram [59, 37, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:09,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:10,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:10,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-13 07:29:10,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:10,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1714788060, now seen corresponding path program 4 times [2021-10-13 07:29:10,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:10,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125011793] [2021-10-13 07:29:10,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:29:10,558 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:10,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:10,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:10,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 07:29:11,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:29:11,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:11,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 07:29:11,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:12,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:16,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:16,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125011793] [2021-10-13 07:29:16,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125011793] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:16,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675605056] [2021-10-13 07:29:16,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:29:16,455 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:16,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:16,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:16,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-13 07:29:17,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:29:17,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:17,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-13 07:29:17,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:17,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [675605056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448426479] [2021-10-13 07:29:18,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:29:18,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:18,074 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:18,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 07:29:18,737 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:29:18,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 07:29:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:19,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 1634 proven. 1406 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-10-13 07:29:26,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448426479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:26,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:29:26,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49, 49, 49, 50] total 143 [2021-10-13 07:29:26,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327211007] [2021-10-13 07:29:26,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2021-10-13 07:29:26,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-10-13 07:29:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3937, Invalid=16369, Unknown=0, NotChecked=0, Total=20306 [2021-10-13 07:29:26,902 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 143 states, 143 states have (on average 2.027972027972028) internal successors, (290), 143 states have internal predecessors, (290), 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) [2021-10-13 07:29:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:31,200 INFO L93 Difference]: Finished difference Result 198 states and 226 transitions. [2021-10-13 07:29:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-13 07:29:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.027972027972028) internal successors, (290), 143 states have internal predecessors, (290), 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 141 [2021-10-13 07:29:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:31,202 INFO L225 Difference]: With dead ends: 198 [2021-10-13 07:29:31,202 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 07:29:31,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3234 ImplicationChecksByTransitivity, 13631.6ms TimeCoverageRelationStatistics Valid=4100, Invalid=17070, Unknown=0, NotChecked=0, Total=21170 [2021-10-13 07:29:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 07:29:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-13 07:29:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.087248322147651) internal successors, (162), 149 states have internal predecessors, (162), 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) [2021-10-13 07:29:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2021-10-13 07:29:31,224 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 141 [2021-10-13 07:29:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:31,225 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2021-10-13 07:29:31,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.027972027972028) internal successors, (290), 143 states have internal predecessors, (290), 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) [2021-10-13 07:29:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2021-10-13 07:29:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-13 07:29:31,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:31,228 INFO L512 BasicCegarLoop]: trace histogram [63, 41, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:31,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:31,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:31,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-13 07:29:31,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:31,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1049479984, now seen corresponding path program 5 times [2021-10-13 07:29:31,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:31,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415191677] [2021-10-13 07:29:31,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 07:29:31,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:31,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:31,850 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:31,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:29:32,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-13 07:29:32,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-13 07:29:32,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:35,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:49,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:49,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415191677] [2021-10-13 07:29:49,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415191677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:49,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1448712060] [2021-10-13 07:29:49,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 07:29:49,381 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:49,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:49,382 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:49,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-13 07:29:50,792 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-13 07:29:50,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:50,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-13 07:29:50,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:51,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1845 proven. 484 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2021-10-13 07:29:52,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1448712060] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:52,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740036487] [2021-10-13 07:29:52,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 07:29:52,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:52,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:52,048 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:52,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 07:29:53,193 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-13 07:29:53,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:29:53,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-13 07:29:53,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:53,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:55,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740036487] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:55,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:29:55,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 76, 75, 26, 75, 76] total 149 [2021-10-13 07:29:55,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637004258] [2021-10-13 07:29:55,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2021-10-13 07:29:55,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2021-10-13 07:29:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5653, Invalid=16399, Unknown=0, NotChecked=0, Total=22052 [2021-10-13 07:29:55,134 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 149 states, 149 states have (on average 2.12751677852349) internal successors, (317), 149 states have internal predecessors, (317), 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) [2021-10-13 07:30:07,162 WARN L207 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 360 DAG size of output: 235 [2021-10-13 07:30:18,394 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification. DAG size of input: 360 DAG size of output: 240 [2021-10-13 07:30:29,570 WARN L207 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 360 DAG size of output: 245 [2021-10-13 07:30:41,154 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 360 DAG size of output: 250 [2021-10-13 07:31:03,296 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 360 DAG size of output: 260 [2021-10-13 07:31:15,856 WARN L207 SmtUtils]: Spent 6.73 s on a formula simplification. DAG size of input: 360 DAG size of output: 265 [2021-10-13 07:31:28,440 WARN L207 SmtUtils]: Spent 6.39 s on a formula simplification. DAG size of input: 360 DAG size of output: 270 [2021-10-13 07:31:41,156 WARN L207 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 360 DAG size of output: 275 [2021-10-13 07:31:54,869 WARN L207 SmtUtils]: Spent 7.47 s on a formula simplification. DAG size of input: 360 DAG size of output: 280 [2021-10-13 07:32:07,008 WARN L207 SmtUtils]: Spent 6.78 s on a formula simplification. DAG size of input: 360 DAG size of output: 285 [2021-10-13 07:32:20,937 WARN L207 SmtUtils]: Spent 7.66 s on a formula simplification. DAG size of input: 360 DAG size of output: 290 [2021-10-13 07:32:34,802 WARN L207 SmtUtils]: Spent 7.62 s on a formula simplification. DAG size of input: 360 DAG size of output: 295 [2021-10-13 07:32:47,969 WARN L207 SmtUtils]: Spent 7.88 s on a formula simplification. DAG size of input: 360 DAG size of output: 300 [2021-10-13 07:33:02,194 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 360 DAG size of output: 305 [2021-10-13 07:33:16,988 WARN L207 SmtUtils]: Spent 8.52 s on a formula simplification. DAG size of input: 360 DAG size of output: 310 [2021-10-13 07:33:30,587 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification. DAG size of input: 360 DAG size of output: 315 [2021-10-13 07:33:44,790 WARN L207 SmtUtils]: Spent 7.92 s on a formula simplification. DAG size of input: 360 DAG size of output: 320 [2021-10-13 07:34:00,476 WARN L207 SmtUtils]: Spent 9.42 s on a formula simplification. DAG size of input: 360 DAG size of output: 325 [2021-10-13 07:34:15,119 WARN L207 SmtUtils]: Spent 8.43 s on a formula simplification. DAG size of input: 360 DAG size of output: 330 [2021-10-13 07:34:29,404 WARN L207 SmtUtils]: Spent 9.10 s on a formula simplification. DAG size of input: 360 DAG size of output: 335 [2021-10-13 07:34:44,662 WARN L207 SmtUtils]: Spent 9.05 s on a formula simplification. DAG size of input: 360 DAG size of output: 340 [2021-10-13 07:35:00,981 WARN L207 SmtUtils]: Spent 10.13 s on a formula simplification. DAG size of input: 360 DAG size of output: 345 [2021-10-13 07:35:13,576 WARN L207 SmtUtils]: Spent 6.42 s on a formula simplification. DAG size of input: 360 DAG size of output: 350 [2021-10-13 07:35:21,730 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 360 DAG size of output: 355 [2021-10-13 07:35:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:43,065 INFO L93 Difference]: Finished difference Result 301 states and 405 transitions. [2021-10-13 07:35:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-10-13 07:35:43,070 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.12751677852349) internal successors, (317), 149 states have internal predecessors, (317), 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 149 [2021-10-13 07:35:43,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:43,072 INFO L225 Difference]: With dead ends: 301 [2021-10-13 07:35:43,072 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 07:35:43,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 349765.6ms TimeCoverageRelationStatistics Valid=11335, Invalid=28865, Unknown=0, NotChecked=0, Total=40200 [2021-10-13 07:35:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 07:35:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-10-13 07:35:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.1150793650793651) internal successors, (281), 252 states have internal predecessors, (281), 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) [2021-10-13 07:35:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 281 transitions. [2021-10-13 07:35:43,128 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 281 transitions. Word has length 149 [2021-10-13 07:35:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:43,129 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 281 transitions. [2021-10-13 07:35:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.12751677852349) internal successors, (317), 149 states have internal predecessors, (317), 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) [2021-10-13 07:35:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 281 transitions. [2021-10-13 07:35:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-10-13 07:35:43,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:43,133 INFO L512 BasicCegarLoop]: trace histogram [91, 50, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:43,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:43,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:43,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 07:35:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:43,739 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:35:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash 782272296, now seen corresponding path program 6 times [2021-10-13 07:35:43,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:35:43,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167957393] [2021-10-13 07:35:43,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 07:35:43,741 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:35:43,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:35:43,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:35:43,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:35:45,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-10-13 07:35:45,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:35:45,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 07:35:45,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:46,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:47,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:35:47,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167957393] [2021-10-13 07:35:47,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167957393] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:35:47,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [230184658] [2021-10-13 07:35:47,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 07:35:47,636 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:35:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:35:47,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:35:47,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-10-13 07:35:49,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-10-13 07:35:49,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:35:49,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 07:35:49,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:50,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:51,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [230184658] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:35:51,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017924846] [2021-10-13 07:35:51,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 07:35:51,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:35:51,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:35:51,035 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:35:51,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 07:35:53,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-10-13 07:35:53,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:35:53,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 07:35:53,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:53,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:54,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 6559 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-10-13 07:35:54,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017924846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:35:54,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:35:54,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54, 54, 54, 54] total 55 [2021-10-13 07:35:54,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138985099] [2021-10-13 07:35:54,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-13 07:35:54,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:35:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-13 07:35:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 07:35:54,656 INFO L87 Difference]: Start difference. First operand 253 states and 281 transitions. Second operand has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 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) [2021-10-13 07:35:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:35:56,743 INFO L93 Difference]: Finished difference Result 2400 states and 2498 transitions. [2021-10-13 07:35:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 07:35:56,744 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 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 205 [2021-10-13 07:35:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:35:56,759 INFO L225 Difference]: With dead ends: 2400 [2021-10-13 07:35:56,760 INFO L226 Difference]: Without dead ends: 2397 [2021-10-13 07:35:56,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1306.1ms TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 07:35:56,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-10-13 07:35:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 352. [2021-10-13 07:35:56,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.1595441595441596) internal successors, (407), 351 states have internal predecessors, (407), 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) [2021-10-13 07:35:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 407 transitions. [2021-10-13 07:35:56,937 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 407 transitions. Word has length 205 [2021-10-13 07:35:56,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:35:56,938 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 407 transitions. [2021-10-13 07:35:56,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 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) [2021-10-13 07:35:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 407 transitions. [2021-10-13 07:35:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-10-13 07:35:56,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:35:56,944 INFO L512 BasicCegarLoop]: trace histogram [137, 73, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:35:56,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:57,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:35:57,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-10-13 07:35:57,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:35:57,570 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:35:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:35:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2144722247, now seen corresponding path program 7 times [2021-10-13 07:35:57,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:35:57,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081139151] [2021-10-13 07:35:57,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 07:35:57,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:35:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:35:57,586 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:35:57,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 07:35:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:59,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-13 07:35:59,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9425 proven. 4160 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-10-13 07:36:02,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9425 proven. 4160 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-10-13 07:36:16,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:36:16,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081139151] [2021-10-13 07:36:16,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081139151] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:36:16,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [878362204] [2021-10-13 07:36:16,007 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 07:36:16,007 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:36:16,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:36:16,017 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:36:16,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-10-13 07:36:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:18,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-13 07:36:18,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9425 proven. 4160 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-10-13 07:36:19,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9425 proven. 4160 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-10-13 07:36:20,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [878362204] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:36:20,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048668847] [2021-10-13 07:36:20,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 07:36:20,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:36:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:36:20,332 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:36:20,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 07:36:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 07:36:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9425 proven. 4160 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-10-13 07:36:22,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 9757 proven. 2 refuted. 0 times theorem prover too weak. 9010 trivial. 0 not checked. [2021-10-13 07:36:23,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048668847] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:36:23,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:36:23,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76, 76, 76, 5] total 152 [2021-10-13 07:36:23,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925655548] [2021-10-13 07:36:23,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2021-10-13 07:36:23,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:36:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2021-10-13 07:36:23,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4676, Invalid=18276, Unknown=0, NotChecked=0, Total=22952 [2021-10-13 07:36:23,971 INFO L87 Difference]: Start difference. First operand 352 states and 407 transitions. Second operand has 152 states, 152 states have (on average 2.1776315789473686) internal successors, (331), 152 states have internal predecessors, (331), 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) [2021-10-13 07:36:33,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:33,768 INFO L93 Difference]: Finished difference Result 353 states and 408 transitions. [2021-10-13 07:36:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-13 07:36:33,769 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 2.1776315789473686) internal successors, (331), 152 states have internal predecessors, (331), 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 297 [2021-10-13 07:36:33,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:33,770 INFO L225 Difference]: With dead ends: 353 [2021-10-13 07:36:33,770 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:36:33,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1778 GetRequests, 1626 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 20520.0ms TimeCoverageRelationStatistics Valid=4880, Invalid=18682, Unknown=0, NotChecked=0, Total=23562 [2021-10-13 07:36:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:36:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:36:33,773 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) [2021-10-13 07:36:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:36:33,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 297 [2021-10-13 07:36:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:33,773 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:36:33,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 2.1776315789473686) internal successors, (331), 152 states have internal predecessors, (331), 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) [2021-10-13 07:36:33,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:36:33,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:36:33,776 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:36:33,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:36:34,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:36:34,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-10-13 07:36:34,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:36:34,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:36:34,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:34,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,232 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:36:36,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:20,697 WARN L207 SmtUtils]: Spent 3.74 m on a formula simplification. DAG size of input: 672 DAG size of output: 406 [2021-10-13 07:40:20,787 INFO L853 garLoopResultBuilder]: At program point L159(lines 43 160) the Hoare annotation is: (and (= ULTIMATE.start_main_~main__y~0 (_ bv50 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv5 32))) [2021-10-13 07:40:20,787 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 208) no Hoare annotation was computed. [2021-10-13 07:40:20,787 INFO L853 garLoopResultBuilder]: At program point L135(lines 55 136) the Hoare annotation is: (and (= ULTIMATE.start_main_~main__y~0 (_ bv50 32)) (= (_ bv7 32) ULTIMATE.start_main_~main__x~0)) [2021-10-13 07:40:20,787 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 103) no Hoare annotation was computed. [2021-10-13 07:40:20,787 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:40:20,787 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 124) no Hoare annotation was computed. [2021-10-13 07:40:20,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:40:20,789 INFO L853 garLoopResultBuilder]: At program point L111(lines 67 112) the Hoare annotation is: (let ((.cse2 (bvslt (bvadd (_ bv14 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse5 (bvslt (bvadd (_ bv11 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse1 (bvslt (bvadd (_ bv15 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse13 (bvslt ULTIMATE.start_main_~main__x~0 (_ bv100 32))) (.cse4 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv1 32)) (_ bv100 32))) (.cse16 (bvslt (bvadd (_ bv6 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse12 (bvslt (bvadd (_ bv16 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse21 (bvslt (bvadd (_ bv18 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse23 (bvslt (bvadd (_ bv17 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse14 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv21 32)) (_ bv100 32))) (.cse24 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv20 32)) (_ bv100 32))) (.cse22 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv19 32)) (_ bv100 32))) (.cse11 (bvslt (bvadd (_ bv10 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse25 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv9 32)) (_ bv100 32))) (.cse9 (bvslt (bvadd (_ bv13 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse6 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv12 32)) (_ bv100 32))) (.cse19 (bvslt (bvadd (_ bv4 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse17 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv5 32)) (_ bv100 32))) (.cse7 (bvslt (bvadd (_ bv23 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse15 (bvslt (bvadd (_ bv22 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse26 (bvslt (bvadd (_ bv8 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse18 (bvslt (bvadd (_ bv7 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse20 (bvslt (bvadd (_ bv3 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse3 (bvslt (bvadd (_ bv2 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse0 (= ULTIMATE.start_main_~main__y~0 (_ bv50 32))) (.cse10 (bvslt (bvadd (_ bv25 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) (.cse8 (bvslt (bvadd ULTIMATE.start_main_~main__x~0 (_ bv24 32)) (_ bv100 32)))) (or (and (= (_ bv67 32) ULTIMATE.start_main_~main__x~0) (= (_ bv67 32) ULTIMATE.start_main_~main__y~0)) (and (bvslt (bvadd (_ bv4294967289 32) ULTIMATE.start_main_~main__x~0) (_ bv50 32)) (not (bvslt (bvadd (_ bv4294967290 32) ULTIMATE.start_main_~main__x~0) (_ bv50 32))) (= (_ bv56 32) ULTIMATE.start_main_~main__y~0)) (and .cse0 (= (_ bv29 32) ULTIMATE.start_main_~main__x~0)) (and (not .cse1) .cse2 (= (_ bv85 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv53 32) ULTIMATE.start_main_~main__y~0) (= (_ bv53 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv20 32))) (and (= (_ bv98 32) ULTIMATE.start_main_~main__y~0) (not .cse3) .cse4) (and .cse5 (= (_ bv88 32) ULTIMATE.start_main_~main__y~0) (not .cse6)) (and (= (_ bv76 32) ULTIMATE.start_main_~main__y~0) .cse7 (not .cse8)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv21 32))) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv45 32))) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv32 32))) (and (not .cse2) .cse9 (= (_ bv86 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv74 32) ULTIMATE.start_main_~main__y~0) (not (bvslt (bvadd (_ bv26 32) ULTIMATE.start_main_~main__x~0) (_ bv100 32))) .cse10) (and (= (_ bv89 32) ULTIMATE.start_main_~main__y~0) .cse11 (not .cse5)) (and .cse1 (= (_ bv84 32) ULTIMATE.start_main_~main__y~0) (not .cse12)) (and (= ULTIMATE.start_main_~main__y~0 (_ bv61 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv61 32))) (and (not .cse13) (not (bvslt (bvadd (_ bv72 32) ULTIMATE.start_main_~main__x~0) (_ bv50 32))) (= (_ bv100 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv11 32) ULTIMATE.start_main_~main__x~0) .cse0) (and .cse0 (= (_ bv25 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv42 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv22 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv33 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv50 32))) (and (= (_ bv60 32) ULTIMATE.start_main_~main__y~0) (bvslt (bvadd (_ bv4294967285 32) ULTIMATE.start_main_~main__x~0) (_ bv50 32)) (not (bvslt (bvadd (_ bv4294967286 32) ULTIMATE.start_main_~main__x~0) (_ bv50 32)))) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv46 32))) (and .cse14 (not .cse15) (= (_ bv78 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv99 32) ULTIMATE.start_main_~main__y~0) .cse13 (not .cse4)) (and .cse0 (= (_ bv15 32) ULTIMATE.start_main_~main__x~0)) (and (not .cse16) .cse17 (= (_ bv94 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv72 32) ULTIMATE.start_main_~main__x~0) (= (_ bv72 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv55 32) ULTIMATE.start_main_~main__y~0) (= (_ bv55 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv27 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv36 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv38 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv10 32) ULTIMATE.start_main_~main__x~0)) (and (= ULTIMATE.start_main_~main__y~0 (_ bv93 32)) .cse16 (not .cse18)) (and (= (_ bv96 32) ULTIMATE.start_main_~main__y~0) (not .cse19) .cse20) (and .cse0 (= (_ bv13 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv16 32) ULTIMATE.start_main_~main__x~0)) (and (= ULTIMATE.start_main_~main__y~0 (_ bv64 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv64 32))) (and (= (_ bv35 32) ULTIMATE.start_main_~main__x~0) .cse0) (and .cse0 (= (_ bv31 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv41 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv39 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv23 32) ULTIMATE.start_main_~main__x~0)) (and (= (_ bv57 32) ULTIMATE.start_main_~main__y~0) (= (_ bv57 32) ULTIMATE.start_main_~main__x~0)) (and (= (_ bv14 32) ULTIMATE.start_main_~main__x~0) .cse0) (and (= ULTIMATE.start_main_~main__x~0 (_ bv69 32)) (= ULTIMATE.start_main_~main__y~0 (_ bv69 32))) (and (= ULTIMATE.start_main_~main__y~0 (_ bv73 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv73 32))) (and .cse21 (not .cse22) (= ULTIMATE.start_main_~main__y~0 (_ bv81 32))) (and .cse0 (= (_ bv34 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv26 32) ULTIMATE.start_main_~main__x~0)) (and (= ULTIMATE.start_main_~main__y~0 (_ bv51 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv51 32))) (and (not .cse23) .cse12 (= (_ bv83 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv82 32) ULTIMATE.start_main_~main__y~0) (not .cse21) .cse23) (and .cse24 (not .cse14) (= (_ bv79 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv80 32) ULTIMATE.start_main_~main__y~0) (not .cse24) .cse22) (and (= (_ bv52 32) ULTIMATE.start_main_~main__y~0) (= (_ bv52 32) ULTIMATE.start_main_~main__x~0)) (and .cse25 (= (_ bv90 32) ULTIMATE.start_main_~main__y~0) (not .cse11)) (and (= (_ bv91 32) ULTIMATE.start_main_~main__y~0) .cse26 (not .cse25)) (and (= (_ bv63 32) ULTIMATE.start_main_~main__x~0) (= (_ bv63 32) ULTIMATE.start_main_~main__y~0)) (and (= ULTIMATE.start_main_~main__x~0 (_ bv47 32)) .cse0) (and (= ULTIMATE.start_main_~main__y~0 (_ bv65 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv65 32))) (and (not .cse9) (= ULTIMATE.start_main_~main__y~0 (_ bv87 32)) .cse6) (and (= ULTIMATE.start_main_~main__y~0 (_ bv71 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv71 32))) (and .cse0 (= (_ bv49 32) ULTIMATE.start_main_~main__x~0)) (and (= ULTIMATE.start_main_~main__y~0 (_ bv54 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv54 32))) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv40 32))) (and .cse19 (not .cse17) (= (_ bv95 32) ULTIMATE.start_main_~main__y~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv37 32))) (and (= (_ bv70 32) ULTIMATE.start_main_~main__x~0) (= (_ bv70 32) ULTIMATE.start_main_~main__y~0)) (and (not .cse7) .cse15 (= ULTIMATE.start_main_~main__y~0 (_ bv77 32))) (and (= (_ bv58 32) ULTIMATE.start_main_~main__x~0) (= (_ bv58 32) ULTIMATE.start_main_~main__y~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv9 32))) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv30 32))) (and (= (_ bv62 32) ULTIMATE.start_main_~main__y~0) (= (_ bv62 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv19 32))) (and (not .cse26) .cse18 (= ULTIMATE.start_main_~main__y~0 (_ bv92 32))) (and (= (_ bv59 32) ULTIMATE.start_main_~main__x~0) (= (_ bv59 32) ULTIMATE.start_main_~main__y~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv24 32))) (and .cse0 (= (_ bv18 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv12 32))) (and .cse0 (= (_ bv28 32) ULTIMATE.start_main_~main__x~0)) (and (not .cse20) (= (_ bv97 32) ULTIMATE.start_main_~main__y~0) .cse3) (and (= ULTIMATE.start_main_~main__x~0 (_ bv43 32)) .cse0) (and .cse0 (= (_ bv17 32) ULTIMATE.start_main_~main__x~0)) (and .cse0 (= (_ bv48 32) ULTIMATE.start_main_~main__x~0)) (and (= (_ bv66 32) ULTIMATE.start_main_~main__x~0) (= (_ bv66 32) ULTIMATE.start_main_~main__y~0)) (and .cse0 (= ULTIMATE.start_main_~main__x~0 (_ bv44 32))) (and (= (_ bv68 32) ULTIMATE.start_main_~main__x~0) (= (_ bv68 32) ULTIMATE.start_main_~main__y~0)) (and (= (_ bv75 32) ULTIMATE.start_main_~main__y~0) (not .cse10) .cse8))) [2021-10-13 07:40:20,789 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 172) no Hoare annotation was computed. [2021-10-13 07:40:20,789 INFO L853 garLoopResultBuilder]: At program point L195(lines 25 196) the Hoare annotation is: (and (= (_ bv2 32) ULTIMATE.start_main_~main__x~0) (= ULTIMATE.start_main_~main__y~0 (_ bv50 32))) [2021-10-13 07:40:20,789 INFO L857 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2021-10-13 07:40:20,789 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 136) no Hoare annotation was computed. [2021-10-13 07:40:20,789 INFO L860 garLoopResultBuilder]: At program point L212(lines 13 214) the Hoare annotation is: true [2021-10-13 07:40:20,789 INFO L853 garLoopResultBuilder]: At program point L171(lines 37 172) the Hoare annotation is: (and (= ULTIMATE.start_main_~main__y~0 (_ bv50 32)) (= (_ bv4 32) ULTIMATE.start_main_~main__x~0)) [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 184) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L853 garLoopResultBuilder]: At program point L147(lines 49 148) the Hoare annotation is: (and (= (_ bv6 32) ULTIMATE.start_main_~main__x~0) (= ULTIMATE.start_main_~main__y~0 (_ bv50 32))) [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L853 garLoopResultBuilder]: At program point L123(lines 61 124) the Hoare annotation is: (and (= (_ bv8 32) ULTIMATE.start_main_~main__x~0) (= ULTIMATE.start_main_~main__y~0 (_ bv50 32))) [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 96) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 148) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 85) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 196) no Hoare annotation was computed. [2021-10-13 07:40:20,790 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 213) no Hoare annotation was computed. [2021-10-13 07:40:20,791 INFO L853 garLoopResultBuilder]: At program point L207(lines 19 208) the Hoare annotation is: (and (= ULTIMATE.start_main_~main__y~0 (_ bv50 32)) (= ULTIMATE.start_main_~main__x~0 (_ bv1 32))) [2021-10-13 07:40:20,791 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 112) no Hoare annotation was computed. [2021-10-13 07:40:20,791 INFO L853 garLoopResultBuilder]: At program point L183(lines 31 184) the Hoare annotation is: (and (= ULTIMATE.start_main_~main__y~0 (_ bv50 32)) (= (_ bv3 32) ULTIMATE.start_main_~main__x~0)) [2021-10-13 07:40:20,791 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 160) no Hoare annotation was computed. [2021-10-13 07:40:20,795 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:40:20,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:40:20 BoogieIcfgContainer [2021-10-13 07:40:20,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:40:20,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:40:20,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:40:20,835 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:40:20,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:38" (3/4) ... [2021-10-13 07:40:20,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:40:20,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:40:20,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:40:20,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:40:20,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:40:20,892 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:40:20,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:40:20,893 INFO L168 Benchmark]: Toolchain (without parser) took 702842.50 ms. Allocated memory was 73.4 MB in the beginning and 274.7 MB in the end (delta: 201.3 MB). Free memory was 54.4 MB in the beginning and 116.3 MB in the end (delta: -61.9 MB). Peak memory consumption was 139.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:20,894 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:20,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.27 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 56.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:20,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 54.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:20,895 INFO L168 Benchmark]: Boogie Preprocessor took 24.85 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 53.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:20,895 INFO L168 Benchmark]: RCFGBuilder took 442.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.2 MB in the beginning and 41.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:20,895 INFO L168 Benchmark]: TraceAbstraction took 701881.87 ms. Allocated memory was 73.4 MB in the beginning and 274.7 MB in the end (delta: 201.3 MB). Free memory was 40.9 MB in the beginning and 121.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 209.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:20,896 INFO L168 Benchmark]: Witness Printer took 58.17 ms. Allocated memory is still 274.7 MB. Free memory was 121.5 MB in the beginning and 116.3 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:20,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 73.4 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.27 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 56.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 54.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.85 ms. Allocated memory is still 73.4 MB. Free memory was 54.4 MB in the beginning and 53.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 442.34 ms. Allocated memory is still 73.4 MB. Free memory was 53.2 MB in the beginning and 41.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 701881.87 ms. Allocated memory was 73.4 MB in the beginning and 274.7 MB in the end (delta: 201.3 MB). Free memory was 40.9 MB in the beginning and 121.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 209.9 MB. Max. memory is 16.1 GB. * Witness Printer took 58.17 ms. Allocated memory is still 274.7 MB. Free memory was 121.5 MB in the beginning and 116.3 MB in the end (delta: 5.2 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: 96]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 701748.1ms, OverallIterations: 10, TraceHistogramMax: 137, EmptinessCheckTime: 33.9ms, AutomataDifference: 376992.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 226395.3ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 186 SDtfs, 4381 SDslu, 5751 SDs, 0 SdLazy, 27375 SolverSat, 10124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20333.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6380 GetRequests, 5619 SyntacticMatches, 0 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7647 ImplicationChecksByTransitivity, 401643.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=9, InterpolantAutomatonStates: 447, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 322.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2045 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 111 NumberOfFragments, 931 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1865.1ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 20974 FormulaSimplificationTreeSizeReductionInter, 224519.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 284.2ms SsaConstructionTime, 5041.0ms SatisfiabilityAnalysisTime, 72864.6ms InterpolantComputationTime, 3138 NumberOfCodeBlocks, 2976 NumberOfCodeBlocksAsserted, 549 NumberOfCheckSat, 6228 ConstructedInterpolants, 0 QuantifiedInterpolants, 20992 SizeOfPredicates, 17 NumberOfNonLiveVariables, 5601 ConjunctsInSsa, 987 ConjunctsInUnsatCore, 48 InterpolantComputations, 6 PerfectInterpolantSequences, 133529/224154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: main__y == 50bv32 && 3bv32 == main__x - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((67bv32 == main__x && 67bv32 == main__y) || ((~bvslt32(~bvadd64(4294967289bv32, main__x), 50bv32) && !~bvslt32(~bvadd64(4294967290bv32, main__x), 50bv32)) && 56bv32 == main__y)) || (main__y == 50bv32 && 29bv32 == main__x)) || ((!~bvslt32(~bvadd64(15bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(14bv32, main__x), 100bv32)) && 85bv32 == main__y)) || (53bv32 == main__y && 53bv32 == main__x)) || (main__y == 50bv32 && main__x == 20bv32)) || ((98bv32 == main__y && !~bvslt32(~bvadd64(2bv32, main__x), 100bv32)) && ~bvslt32(~bvadd64(main__x, 1bv32), 100bv32))) || ((~bvslt32(~bvadd64(11bv32, main__x), 100bv32) && 88bv32 == main__y) && !~bvslt32(~bvadd64(main__x, 12bv32), 100bv32))) || ((76bv32 == main__y && ~bvslt32(~bvadd64(23bv32, main__x), 100bv32)) && !~bvslt32(~bvadd64(main__x, 24bv32), 100bv32))) || (main__y == 50bv32 && main__x == 21bv32)) || (main__y == 50bv32 && main__x == 45bv32)) || (main__y == 50bv32 && main__x == 32bv32)) || ((!~bvslt32(~bvadd64(14bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(13bv32, main__x), 100bv32)) && 86bv32 == main__y)) || ((74bv32 == main__y && !~bvslt32(~bvadd64(26bv32, main__x), 100bv32)) && ~bvslt32(~bvadd64(25bv32, main__x), 100bv32))) || ((89bv32 == main__y && ~bvslt32(~bvadd64(10bv32, main__x), 100bv32)) && !~bvslt32(~bvadd64(11bv32, main__x), 100bv32))) || ((~bvslt32(~bvadd64(15bv32, main__x), 100bv32) && 84bv32 == main__y) && !~bvslt32(~bvadd64(16bv32, main__x), 100bv32))) || (main__y == 61bv32 && main__x == 61bv32)) || ((!~bvslt32(main__x, 100bv32) && !~bvslt32(~bvadd64(72bv32, main__x), 50bv32)) && 100bv32 == main__y)) || (11bv32 == main__x && main__y == 50bv32)) || (main__y == 50bv32 && 25bv32 == main__x)) || (main__y == 50bv32 && 42bv32 == main__x)) || (main__y == 50bv32 && 22bv32 == main__x)) || (main__y == 50bv32 && 33bv32 == main__x)) || (main__y == 50bv32 && main__x == 50bv32)) || ((60bv32 == main__y && ~bvslt32(~bvadd64(4294967285bv32, main__x), 50bv32)) && !~bvslt32(~bvadd64(4294967286bv32, main__x), 50bv32))) || (main__y == 50bv32 && main__x == 46bv32)) || ((~bvslt32(~bvadd64(main__x, 21bv32), 100bv32) && !~bvslt32(~bvadd64(22bv32, main__x), 100bv32)) && 78bv32 == main__y)) || ((99bv32 == main__y && ~bvslt32(main__x, 100bv32)) && !~bvslt32(~bvadd64(main__x, 1bv32), 100bv32))) || (main__y == 50bv32 && 15bv32 == main__x)) || ((!~bvslt32(~bvadd64(6bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(main__x, 5bv32), 100bv32)) && 94bv32 == main__y)) || (72bv32 == main__x && 72bv32 == main__y)) || (55bv32 == main__y && 55bv32 == main__x)) || (main__y == 50bv32 && 27bv32 == main__x)) || (main__y == 50bv32 && 36bv32 == main__x)) || (main__y == 50bv32 && 38bv32 == main__x)) || (main__y == 50bv32 && 10bv32 == main__x)) || ((main__y == 93bv32 && ~bvslt32(~bvadd64(6bv32, main__x), 100bv32)) && !~bvslt32(~bvadd64(7bv32, main__x), 100bv32))) || ((96bv32 == main__y && !~bvslt32(~bvadd64(4bv32, main__x), 100bv32)) && ~bvslt32(~bvadd64(3bv32, main__x), 100bv32))) || (main__y == 50bv32 && 13bv32 == main__x)) || (main__y == 50bv32 && 16bv32 == main__x)) || (main__y == 64bv32 && main__x == 64bv32)) || (35bv32 == main__x && main__y == 50bv32)) || (main__y == 50bv32 && 31bv32 == main__x)) || (main__y == 50bv32 && 41bv32 == main__x)) || (main__y == 50bv32 && 39bv32 == main__x)) || (main__y == 50bv32 && 23bv32 == main__x)) || (57bv32 == main__y && 57bv32 == main__x)) || (14bv32 == main__x && main__y == 50bv32)) || (main__x == 69bv32 && main__y == 69bv32)) || (main__y == 73bv32 && main__x == 73bv32)) || ((~bvslt32(~bvadd64(18bv32, main__x), 100bv32) && !~bvslt32(~bvadd64(main__x, 19bv32), 100bv32)) && main__y == 81bv32)) || (main__y == 50bv32 && 34bv32 == main__x)) || (main__y == 50bv32 && 26bv32 == main__x)) || (main__y == 51bv32 && main__x == 51bv32)) || ((!~bvslt32(~bvadd64(17bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(16bv32, main__x), 100bv32)) && 83bv32 == main__y)) || ((82bv32 == main__y && !~bvslt32(~bvadd64(18bv32, main__x), 100bv32)) && ~bvslt32(~bvadd64(17bv32, main__x), 100bv32))) || ((~bvslt32(~bvadd64(main__x, 20bv32), 100bv32) && !~bvslt32(~bvadd64(main__x, 21bv32), 100bv32)) && 79bv32 == main__y)) || ((80bv32 == main__y && !~bvslt32(~bvadd64(main__x, 20bv32), 100bv32)) && ~bvslt32(~bvadd64(main__x, 19bv32), 100bv32))) || (52bv32 == main__y && 52bv32 == main__x)) || ((~bvslt32(~bvadd64(main__x, 9bv32), 100bv32) && 90bv32 == main__y) && !~bvslt32(~bvadd64(10bv32, main__x), 100bv32))) || ((91bv32 == main__y && ~bvslt32(~bvadd64(8bv32, main__x), 100bv32)) && !~bvslt32(~bvadd64(main__x, 9bv32), 100bv32))) || (63bv32 == main__x && 63bv32 == main__y)) || (main__x == 47bv32 && main__y == 50bv32)) || (main__y == 65bv32 && main__x == 65bv32)) || ((!~bvslt32(~bvadd64(13bv32, main__x), 100bv32) && main__y == 87bv32) && ~bvslt32(~bvadd64(main__x, 12bv32), 100bv32))) || (main__y == 71bv32 && main__x == 71bv32)) || (main__y == 50bv32 && 49bv32 == main__x)) || (main__y == 54bv32 && main__x == 54bv32)) || (main__y == 50bv32 && main__x == 40bv32)) || ((~bvslt32(~bvadd64(4bv32, main__x), 100bv32) && !~bvslt32(~bvadd64(main__x, 5bv32), 100bv32)) && 95bv32 == main__y)) || (main__y == 50bv32 && main__x == 37bv32)) || (70bv32 == main__x && 70bv32 == main__y)) || ((!~bvslt32(~bvadd64(23bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(22bv32, main__x), 100bv32)) && main__y == 77bv32)) || (58bv32 == main__x && 58bv32 == main__y)) || (main__y == 50bv32 && main__x == 9bv32)) || (main__y == 50bv32 && main__x == 30bv32)) || (62bv32 == main__y && 62bv32 == main__x)) || (main__y == 50bv32 && main__x == 19bv32)) || ((!~bvslt32(~bvadd64(8bv32, main__x), 100bv32) && ~bvslt32(~bvadd64(7bv32, main__x), 100bv32)) && main__y == 92bv32)) || (59bv32 == main__x && 59bv32 == main__y)) || (main__y == 50bv32 && main__x == 24bv32)) || (main__y == 50bv32 && 18bv32 == main__x)) || (main__y == 50bv32 && main__x == 12bv32)) || (main__y == 50bv32 && 28bv32 == main__x)) || ((!~bvslt32(~bvadd64(3bv32, main__x), 100bv32) && 97bv32 == main__y) && ~bvslt32(~bvadd64(2bv32, main__x), 100bv32))) || (main__x == 43bv32 && main__y == 50bv32)) || (main__y == 50bv32 && 17bv32 == main__x)) || (main__y == 50bv32 && 48bv32 == main__x)) || (66bv32 == main__x && 66bv32 == main__y)) || (main__y == 50bv32 && main__x == 44bv32)) || (68bv32 == main__x && 68bv32 == main__y)) || ((75bv32 == main__y && !~bvslt32(~bvadd64(25bv32, main__x), 100bv32)) && ~bvslt32(~bvadd64(main__x, 24bv32), 100bv32)) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: main__y == 50bv32 && 7bv32 == main__x - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: main__y == 50bv32 && main__x == 1bv32 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 2bv32 == main__x && main__y == 50bv32 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 8bv32 == main__x && main__y == 50bv32 - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: main__y == 50bv32 && main__x == 5bv32 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 6bv32 == main__x && main__y == 50bv32 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: main__y == 50bv32 && 4bv32 == main__x RESULT: Ultimate proved your program to be correct! [2021-10-13 07:40:20,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb750435-11e5-4176-aa1f-3b020b153327/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...