./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE --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 14057487082e35ccfcc2669444e5a8afbb4e40c90cf1c6140cd050e22dabbbb2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE --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 14057487082e35ccfcc2669444e5a8afbb4e40c90cf1c6140cd050e22dabbbb2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:13:44,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:13:44,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:13:45,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:13:45,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:13:45,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:13:45,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:13:45,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:13:45,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:13:45,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:13:45,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:13:45,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:13:45,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:13:45,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:13:45,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:13:45,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:13:45,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:13:45,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:13:45,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:13:45,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:13:45,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:13:45,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:13:45,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:13:45,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:13:45,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:13:45,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:13:45,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:13:45,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:13:45,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:13:45,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:13:45,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:13:45,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:13:45,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:13:45,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:13:45,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:13:45,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:13:45,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:13:45,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:13:45,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:13:45,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:13:45,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:13:45,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:13:45,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:13:45,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:13:45,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:13:45,127 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:13:45,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:13:45,127 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:13:45,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:13:45,127 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:13:45,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:13:45,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:13:45,135 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:13:45,135 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:13:45,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:13:45,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:13:45,136 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:13:45,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:13:45,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:13:45,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:13:45,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:13:45,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:13:45,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:13:45,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:13:45,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:13:45,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:13:45,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:13:45,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:13:45,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:13:45,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:13:45,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:13:45,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:13:45,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:13:45,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:13:45,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:13:45,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:13:45,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:13:45,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:13:45,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:13:45,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:13:45,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:13:45,142 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_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14057487082e35ccfcc2669444e5a8afbb4e40c90cf1c6140cd050e22dabbbb2 [2021-10-24 11:13:45,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:13:45,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:13:45,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:13:45,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:13:45,429 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:13:45,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:13:45,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/b0e32168b/e32c42c1ce1f4899ad0a6d2e04ea8be1/FLAG97b2c7ea6 [2021-10-24 11:13:45,948 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:13:45,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:13:45,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/b0e32168b/e32c42c1ce1f4899ad0a6d2e04ea8be1/FLAG97b2c7ea6 [2021-10-24 11:13:46,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/b0e32168b/e32c42c1ce1f4899ad0a6d2e04ea8be1 [2021-10-24 11:13:46,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:13:46,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:13:46,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:13:46,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:13:46,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:13:46,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145b047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46, skipping insertion in model container [2021-10-24 11:13:46,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:13:46,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:13:46,638 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_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c[37311,37324] [2021-10-24 11:13:46,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:13:46,663 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:13:46,715 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_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c[37311,37324] [2021-10-24 11:13:46,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:13:46,731 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:13:46,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46 WrapperNode [2021-10-24 11:13:46,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:13:46,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:13:46,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:13:46,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:13:46,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:13:46,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:13:46,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:13:46,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:13:46,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:13:46,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:13:46,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:13:46,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:13:46,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (1/1) ... [2021-10-24 11:13:46,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:13:46,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:13:46,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:13:46,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:13:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:13:47,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:13:47,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:13:47,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:13:47,126 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-24 11:13:47,676 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-24 11:13:47,676 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-24 11:13:48,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:13:48,028 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 11:13:48,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:13:48 BoogieIcfgContainer [2021-10-24 11:13:48,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:13:48,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:13:48,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:13:48,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:13:48,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:13:46" (1/3) ... [2021-10-24 11:13:48,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed75a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:13:48, skipping insertion in model container [2021-10-24 11:13:48,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:13:46" (2/3) ... [2021-10-24 11:13:48,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed75a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:13:48, skipping insertion in model container [2021-10-24 11:13:48,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:13:48" (3/3) ... [2021-10-24 11:13:48,039 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:13:48,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:13:48,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:13:48,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:13:48,098 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:13:48,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:13:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 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) [2021-10-24 11:13:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 11:13:48,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:48,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:48,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1473416293, now seen corresponding path program 1 times [2021-10-24 11:13:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:48,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152572316] [2021-10-24 11:13:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:48,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:13:48,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:48,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152572316] [2021-10-24 11:13:48,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152572316] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:13:48,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:13:48,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:13:48,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325087864] [2021-10-24 11:13:48,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:13:48,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:13:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:13:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:48,359 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 83 states have internal predecessors, (145), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 11:13:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:13:48,476 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2021-10-24 11:13:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:13:48,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2021-10-24 11:13:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:13:48,486 INFO L225 Difference]: With dead ends: 169 [2021-10-24 11:13:48,487 INFO L226 Difference]: Without dead ends: 83 [2021-10-24 11:13:48,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-24 11:13:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-24 11:13:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 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) [2021-10-24 11:13:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2021-10-24 11:13:48,527 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2021-10-24 11:13:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:13:48,528 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2021-10-24 11:13:48,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-10-24 11:13:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2021-10-24 11:13:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 11:13:48,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:48,530 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:13:48,530 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1584510802, now seen corresponding path program 1 times [2021-10-24 11:13:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:48,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921444026] [2021-10-24 11:13:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:48,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:13:48,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:48,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921444026] [2021-10-24 11:13:48,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921444026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:13:48,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:13:48,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:13:48,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460427379] [2021-10-24 11:13:48,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:13:48,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:13:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:13:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:48,625 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:13:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:13:48,767 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2021-10-24 11:13:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:13:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-24 11:13:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:13:48,773 INFO L225 Difference]: With dead ends: 178 [2021-10-24 11:13:48,773 INFO L226 Difference]: Without dead ends: 98 [2021-10-24 11:13:48,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-24 11:13:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-10-24 11:13:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.431578947368421) internal successors, (136), 95 states have internal predecessors, (136), 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) [2021-10-24 11:13:48,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2021-10-24 11:13:48,796 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2021-10-24 11:13:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:13:48,796 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2021-10-24 11:13:48,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:13:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2021-10-24 11:13:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-24 11:13:48,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:48,799 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:48,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:13:48,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:48,804 INFO L82 PathProgramCache]: Analyzing trace with hash -226758766, now seen corresponding path program 1 times [2021-10-24 11:13:48,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:48,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818684692] [2021-10-24 11:13:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:48,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 11:13:48,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:48,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818684692] [2021-10-24 11:13:48,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818684692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:13:48,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:13:48,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:13:48,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444167216] [2021-10-24 11:13:48,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:13:48,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:13:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:13:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:48,883 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 11:13:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:13:49,006 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2021-10-24 11:13:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:13:49,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 39 [2021-10-24 11:13:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:13:49,022 INFO L225 Difference]: With dead ends: 206 [2021-10-24 11:13:49,023 INFO L226 Difference]: Without dead ends: 113 [2021-10-24 11:13:49,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-24 11:13:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-10-24 11:13:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4) internal successors, (154), 110 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) [2021-10-24 11:13:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2021-10-24 11:13:49,032 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2021-10-24 11:13:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:13:49,033 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2021-10-24 11:13:49,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-10-24 11:13:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2021-10-24 11:13:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-24 11:13:49,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:49,035 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:49,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 11:13:49,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash -466595364, now seen corresponding path program 1 times [2021-10-24 11:13:49,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:49,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574569004] [2021-10-24 11:13:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:49,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 11:13:49,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:49,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574569004] [2021-10-24 11:13:49,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574569004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:13:49,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037451667] [2021-10-24 11:13:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:49,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:13:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:13:49,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:13:49,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:13:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 11:13:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:13:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-24 11:13:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:13:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-24 11:13:49,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037451667] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:13:49,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 11:13:49,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2021-10-24 11:13:49,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409638895] [2021-10-24 11:13:49,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 11:13:49,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:13:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 11:13:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:13:49,863 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:13:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:13:50,141 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2021-10-24 11:13:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 11:13:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-24 11:13:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:13:50,144 INFO L225 Difference]: With dead ends: 312 [2021-10-24 11:13:50,145 INFO L226 Difference]: Without dead ends: 203 [2021-10-24 11:13:50,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-24 11:13:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-24 11:13:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2021-10-24 11:13:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 185 states have internal predecessors, (255), 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) [2021-10-24 11:13:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2021-10-24 11:13:50,173 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 52 [2021-10-24 11:13:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:13:50,174 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2021-10-24 11:13:50,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 11:13:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2021-10-24 11:13:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-24 11:13:50,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:50,182 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:50,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 11:13:50,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:13:50,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1777131692, now seen corresponding path program 1 times [2021-10-24 11:13:50,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:50,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680626808] [2021-10-24 11:13:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:50,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-24 11:13:50,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:50,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680626808] [2021-10-24 11:13:50,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680626808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:13:50,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:13:50,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:13:50,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899611501] [2021-10-24 11:13:50,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:13:50,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:13:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:13:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:50,449 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-24 11:13:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:13:50,551 INFO L93 Difference]: Finished difference Result 390 states and 543 transitions. [2021-10-24 11:13:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:13:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 67 [2021-10-24 11:13:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:13:50,556 INFO L225 Difference]: With dead ends: 390 [2021-10-24 11:13:50,556 INFO L226 Difference]: Without dead ends: 207 [2021-10-24 11:13:50,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:13:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-24 11:13:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-10-24 11:13:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.357843137254902) internal successors, (277), 204 states have internal predecessors, (277), 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) [2021-10-24 11:13:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2021-10-24 11:13:50,579 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 67 [2021-10-24 11:13:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:13:50,580 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2021-10-24 11:13:50,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-24 11:13:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2021-10-24 11:13:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-24 11:13:50,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:13:50,584 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:13:50,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 11:13:50,585 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:13:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:13:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash -201552327, now seen corresponding path program 1 times [2021-10-24 11:13:50,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:13:50,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431265362] [2021-10-24 11:13:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:50,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:13:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-24 11:13:50,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:13:50,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431265362] [2021-10-24 11:13:50,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431265362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:13:50,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031983357] [2021-10-24 11:13:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:13:50,755 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:13:50,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:13:50,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:13:50,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:13:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:13:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 11:13:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:13:51,168 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-24 11:13:51,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:13:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-10-24 11:13:51,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031983357] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 11:13:51,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8343702] [2021-10-24 11:13:51,571 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-24 11:13:51,572 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 11:13:51,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 11:13:51,582 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 11:13:51,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 11:13:51,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:51,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 11:13:51,667 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:51,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 11:13:51,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 355 [2021-10-24 11:13:51,739 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 11:13:51,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,782 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 [2021-10-24 11:13:51,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:51,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,817 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 [2021-10-24 11:13:51,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,820 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:51,850 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 [2021-10-24 11:13:51,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:51,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 11:13:51,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:51,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,003 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:13:52,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,065 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:52,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:13:52,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,122 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:52,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 11:13:52,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 11:13:52,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 11:13:52,164 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-10-24 11:13:52,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,348 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.0 percent of original size [2021-10-24 11:13:52,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 903 [2021-10-24 11:13:52,376 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-24 11:13:52,380 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:996, output treesize:903 [2021-10-24 11:13:52,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 904 [2021-10-24 11:13:52,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 932 [2021-10-24 11:13:52,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:52,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 930 [2021-10-24 11:13:52,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:52,980 INFO L180 QuantifierPusher]: treesize reduction 87, result has 75.3 percent of original size [2021-10-24 11:13:52,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-10-24 11:13:53,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:53,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:53,030 INFO L180 QuantifierPusher]: treesize reduction 95, result has 74.7 percent of original size [2021-10-24 11:13:53,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-24 11:13:53,049 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.7 percent of original size [2021-10-24 11:13:53,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-10-24 11:13:53,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,351 INFO L180 QuantifierPusher]: treesize reduction 79, result has 78.1 percent of original size [2021-10-24 11:13:53,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-24 11:13:53,374 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.8 percent of original size [2021-10-24 11:13:53,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-10-24 11:13:53,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,580 INFO L180 QuantifierPusher]: treesize reduction 71, result has 80.7 percent of original size [2021-10-24 11:13:53,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-24 11:13:53,601 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.7 percent of original size [2021-10-24 11:13:53,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-10-24 11:13:53,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:53,921 INFO L180 QuantifierPusher]: treesize reduction 51, result has 83.9 percent of original size [2021-10-24 11:13:53,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 256 [2021-10-24 11:13:53,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:53,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-10-24 11:13:53,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,152 INFO L180 QuantifierPusher]: treesize reduction 42, result has 86.7 percent of original size [2021-10-24 11:13:54,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-10-24 11:13:54,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,421 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.3 percent of original size [2021-10-24 11:13:54,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-10-24 11:13:54,476 INFO L180 QuantifierPusher]: treesize reduction 39, result has 92.2 percent of original size [2021-10-24 11:13:54,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 445 [2021-10-24 11:13:54,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:54,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 439 [2021-10-24 11:13:54,542 INFO L180 QuantifierPusher]: treesize reduction 47, result has 91.0 percent of original size [2021-10-24 11:13:54,550 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:54,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:54,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:54,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 440 [2021-10-24 11:13:54,602 INFO L180 QuantifierPusher]: treesize reduction 6, result has 98.7 percent of original size [2021-10-24 11:13:54,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 435 [2021-10-24 11:13:54,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:54,855 INFO L180 QuantifierPusher]: treesize reduction 31, result has 93.9 percent of original size [2021-10-24 11:13:54,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:54,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:54,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:54,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 580 [2021-10-24 11:13:54,925 INFO L180 QuantifierPusher]: treesize reduction 6, result has 99.0 percent of original size [2021-10-24 11:13:54,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 588 [2021-10-24 11:13:54,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,111 INFO L180 QuantifierPusher]: treesize reduction 23, result has 95.5 percent of original size [2021-10-24 11:13:55,114 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:55,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:55,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:55,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 711 [2021-10-24 11:13:55,204 INFO L180 QuantifierPusher]: treesize reduction 6, result has 99.2 percent of original size [2021-10-24 11:13:55,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 694 [2021-10-24 11:13:55,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,372 INFO L180 QuantifierPusher]: treesize reduction 3, result has 99.3 percent of original size [2021-10-24 11:13:55,386 INFO L185 QuantifierPusher]: treesize reduction 45, result has 85.0 percent of original size 256 [2021-10-24 11:13:55,401 INFO L180 QuantifierPusher]: treesize reduction 45, result has 86.7 percent of original size [2021-10-24 11:13:55,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-10-24 11:13:55,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:55,687 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:55,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:55,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:55,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:55,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 11:13:55,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:55,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:55,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 11:13:55,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 783 [2021-10-24 11:13:55,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 791 [2021-10-24 11:13:55,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:55,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,028 INFO L180 QuantifierPusher]: treesize reduction 81, result has 76.5 percent of original size [2021-10-24 11:13:56,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 259 [2021-10-24 11:13:56,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:13:56,067 INFO L180 QuantifierPusher]: treesize reduction 89, result has 75.8 percent of original size [2021-10-24 11:13:56,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 11:13:56,086 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.8 percent of original size [2021-10-24 11:13:56,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:56,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,259 INFO L180 QuantifierPusher]: treesize reduction 73, result has 79.3 percent of original size [2021-10-24 11:13:56,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 11:13:56,282 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.9 percent of original size [2021-10-24 11:13:56,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-10-24 11:13:56,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,431 INFO L180 QuantifierPusher]: treesize reduction 65, result has 81.9 percent of original size [2021-10-24 11:13:56,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-10-24 11:13:56,456 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.9 percent of original size [2021-10-24 11:13:56,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-10-24 11:13:56,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,570 INFO L180 QuantifierPusher]: treesize reduction 45, result has 85.4 percent of original size [2021-10-24 11:13:56,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-24 11:13:56,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 282 [2021-10-24 11:13:56,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:56,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,859 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:56,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,887 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:56,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-24 11:13:56,896 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 11:13:56,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:56,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-24 11:13:56,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 757 [2021-10-24 11:13:56,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 765 [2021-10-24 11:13:56,964 INFO L180 QuantifierPusher]: treesize reduction 45, result has 85.4 percent of original size [2021-10-24 11:13:56,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-10-24 11:13:57,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:57,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 282 [2021-10-24 11:13:57,051 INFO L180 QuantifierPusher]: treesize reduction 65, result has 81.9 percent of original size [2021-10-24 11:13:57,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-10-24 11:13:57,081 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.9 percent of original size [2021-10-24 11:13:57,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-10-24 11:13:57,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,291 INFO L180 QuantifierPusher]: treesize reduction 73, result has 79.3 percent of original size [2021-10-24 11:13:57,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 11:13:57,314 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.9 percent of original size [2021-10-24 11:13:57,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-10-24 11:13:57,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,530 INFO L180 QuantifierPusher]: treesize reduction 81, result has 76.5 percent of original size [2021-10-24 11:13:57,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 259 [2021-10-24 11:13:57,547 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 11:13:57,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-10-24 11:13:57,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:57,964 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.1 percent of original size [2021-10-24 11:13:57,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-24 11:13:57,995 INFO L180 QuantifierPusher]: treesize reduction 89, result has 75.8 percent of original size [2021-10-24 11:13:58,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 260 [2021-10-24 11:13:58,020 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.8 percent of original size [2021-10-24 11:13:58,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-24 11:13:58,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:13:58,251 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 11:14:15,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 11:14:15,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 11:14:15,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 7 [2021-10-24 11:14:15,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877279807] [2021-10-24 11:14:15,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 11:14:15,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 11:14:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2021-10-24 11:14:15,088 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-10-24 11:14:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:15,179 INFO L93 Difference]: Finished difference Result 649 states and 873 transitions. [2021-10-24 11:14:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 11:14:15,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 85 [2021-10-24 11:14:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:15,184 INFO L225 Difference]: With dead ends: 649 [2021-10-24 11:14:15,184 INFO L226 Difference]: Without dead ends: 647 [2021-10-24 11:14:15,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 210 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 16850.1ms TimeCoverageRelationStatistics Valid=229, Invalid=1331, Unknown=0, NotChecked=0, Total=1560 [2021-10-24 11:14:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-10-24 11:14:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 566. [2021-10-24 11:14:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.3716814159292035) internal successors, (775), 565 states have internal predecessors, (775), 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) [2021-10-24 11:14:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 775 transitions. [2021-10-24 11:14:15,206 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 775 transitions. Word has length 85 [2021-10-24 11:14:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:15,207 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 775 transitions. [2021-10-24 11:14:15,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-10-24 11:14:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 775 transitions. [2021-10-24 11:14:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-10-24 11:14:15,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:15,210 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:15,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:15,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-24 11:14:15,438 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash -496213586, now seen corresponding path program 1 times [2021-10-24 11:14:15,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:15,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739988974] [2021-10-24 11:14:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:15,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-24 11:14:15,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:14:15,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739988974] [2021-10-24 11:14:15,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739988974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:15,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:15,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:14:15,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413173842] [2021-10-24 11:14:15,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:15,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:15,552 INFO L87 Difference]: Start difference. First operand 566 states and 775 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-24 11:14:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:15,707 INFO L93 Difference]: Finished difference Result 1260 states and 1782 transitions. [2021-10-24 11:14:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 143 [2021-10-24 11:14:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:15,712 INFO L225 Difference]: With dead ends: 1260 [2021-10-24 11:14:15,713 INFO L226 Difference]: Without dead ends: 694 [2021-10-24 11:14:15,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-24 11:14:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 629. [2021-10-24 11:14:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 628 states have internal predecessors, (859), 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) [2021-10-24 11:14:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 859 transitions. [2021-10-24 11:14:15,736 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 859 transitions. Word has length 143 [2021-10-24 11:14:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:15,738 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 859 transitions. [2021-10-24 11:14:15,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-24 11:14:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 859 transitions. [2021-10-24 11:14:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-10-24 11:14:15,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:15,740 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:15,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-10-24 11:14:15,741 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash -802043813, now seen corresponding path program 2 times [2021-10-24 11:14:15,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:15,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607263829] [2021-10-24 11:14:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:15,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-10-24 11:14:15,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:14:15,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607263829] [2021-10-24 11:14:15,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607263829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:15,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:15,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:14:15,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146614345] [2021-10-24 11:14:15,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:15,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:15,833 INFO L87 Difference]: Start difference. First operand 629 states and 859 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-24 11:14:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:15,969 INFO L93 Difference]: Finished difference Result 1447 states and 2059 transitions. [2021-10-24 11:14:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 152 [2021-10-24 11:14:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:15,975 INFO L225 Difference]: With dead ends: 1447 [2021-10-24 11:14:15,975 INFO L226 Difference]: Without dead ends: 770 [2021-10-24 11:14:15,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-10-24 11:14:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 743. [2021-10-24 11:14:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.3517520215633423) internal successors, (1003), 742 states have internal predecessors, (1003), 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) [2021-10-24 11:14:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1003 transitions. [2021-10-24 11:14:16,000 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1003 transitions. Word has length 152 [2021-10-24 11:14:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:16,000 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1003 transitions. [2021-10-24 11:14:16,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-10-24 11:14:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1003 transitions. [2021-10-24 11:14:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-24 11:14:16,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:16,006 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:16,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-10-24 11:14:16,007 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1891909508, now seen corresponding path program 1 times [2021-10-24 11:14:16,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:16,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130213850] [2021-10-24 11:14:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:16,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-24 11:14:16,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:14:16,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130213850] [2021-10-24 11:14:16,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130213850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:16,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:16,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 11:14:16,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732760626] [2021-10-24 11:14:16,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:16,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:14:16,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:16,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:16,094 INFO L87 Difference]: Start difference. First operand 743 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-10-24 11:14:16,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:16,137 INFO L93 Difference]: Finished difference Result 1225 states and 1656 transitions. [2021-10-24 11:14:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:16,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 163 [2021-10-24 11:14:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:16,142 INFO L225 Difference]: With dead ends: 1225 [2021-10-24 11:14:16,142 INFO L226 Difference]: Without dead ends: 743 [2021-10-24 11:14:16,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-10-24 11:14:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2021-10-24 11:14:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.349056603773585) internal successors, (1001), 742 states have internal predecessors, (1001), 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) [2021-10-24 11:14:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1001 transitions. [2021-10-24 11:14:16,171 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1001 transitions. Word has length 163 [2021-10-24 11:14:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:16,172 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1001 transitions. [2021-10-24 11:14:16,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-10-24 11:14:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1001 transitions. [2021-10-24 11:14:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-24 11:14:16,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:16,175 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:16,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-10-24 11:14:16,175 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash -786697126, now seen corresponding path program 1 times [2021-10-24 11:14:16,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:14:16,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792686113] [2021-10-24 11:14:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:16,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:14:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:14:16,236 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:14:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:14:16,400 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 11:14:16,401 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:14:16,402 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:14:16,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-10-24 11:14:16,410 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:14:16,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:16 BoogieIcfgContainer [2021-10-24 11:14:16,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:14:16,568 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:14:16,568 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:14:16,569 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:14:16,569 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:13:48" (3/4) ... [2021-10-24 11:14:16,572 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 11:14:16,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:14:16,573 INFO L168 Benchmark]: Toolchain (without parser) took 30260.05 ms. Allocated memory was 88.1 MB in the beginning and 272.6 MB in the end (delta: 184.5 MB). Free memory was 50.8 MB in the beginning and 104.6 MB in the end (delta: -53.9 MB). Peak memory consumption was 131.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,574 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:14:16,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.94 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.5 MB in the beginning and 81.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.44 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 78.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,575 INFO L168 Benchmark]: Boogie Preprocessor took 78.94 ms. Allocated memory is still 109.1 MB. Free memory was 78.6 MB in the beginning and 76.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,575 INFO L168 Benchmark]: RCFGBuilder took 1144.37 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 48.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,576 INFO L168 Benchmark]: TraceAbstraction took 28535.28 ms. Allocated memory was 109.1 MB in the beginning and 272.6 MB in the end (delta: 163.6 MB). Free memory was 47.9 MB in the beginning and 105.7 MB in the end (delta: -57.8 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:16,576 INFO L168 Benchmark]: Witness Printer took 4.00 ms. Allocated memory is still 272.6 MB. Free memory is still 104.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:14:16,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.94 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.5 MB in the beginning and 81.5 MB in the end (delta: -31.0 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.44 ms. Allocated memory is still 109.1 MB. Free memory was 81.5 MB in the beginning and 78.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.94 ms. Allocated memory is still 109.1 MB. Free memory was 78.6 MB in the beginning and 76.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1144.37 ms. Allocated memory is still 109.1 MB. Free memory was 76.5 MB in the beginning and 48.5 MB in the end (delta: 28.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28535.28 ms. Allocated memory was 109.1 MB in the beginning and 272.6 MB in the end (delta: 163.6 MB). Free memory was 47.9 MB in the beginning and 105.7 MB in the end (delta: -57.8 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.00 ms. Allocated memory is still 272.6 MB. Free memory is still 104.6 MB. There was no memory consumed. 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 - UnprovableResult [Line: 609]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseXor at line 357. Possible FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND TRUE tmp___1 - 12288 [L86] COND TRUE tmp___2 - 16384 [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L609] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28317.7ms, OverallIterations: 10, TraceHistogramMax: 11, EmptinessCheckTime: 37.8ms, AutomataDifference: 1290.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1223 SDtfs, 711 SDslu, 1071 SDs, 0 SdLazy, 921 SolverSat, 186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 734.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 322 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 16913.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=743occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 193.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 196 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 80.2ms SsaConstructionTime, 376.6ms SatisfiabilityAnalysisTime, 1756.5ms InterpolantComputationTime, 1049 NumberOfCodeBlocks, 1049 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1009 ConstructedInterpolants, 0 QuantifiedInterpolants, 2915 SizeOfPredicates, 1 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 1708/1967 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 11:14:16,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:14:19,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:14:19,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:14:19,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:14:19,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:14:19,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:14:19,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:14:19,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:14:19,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:14:19,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:14:19,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:14:19,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:14:19,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:14:19,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:14:19,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:14:19,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:14:19,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:14:19,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:14:19,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:14:19,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:14:19,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:14:19,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:14:19,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:14:19,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:14:19,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:14:19,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:14:19,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:14:19,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:14:19,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:14:19,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:14:19,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:14:19,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:14:19,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:14:19,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:14:19,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:14:19,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:14:19,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:14:19,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:14:19,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:14:19,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:14:19,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:14:19,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 11:14:19,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:14:19,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:14:19,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:14:19,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:14:19,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:14:19,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:14:19,204 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:14:19,205 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:14:19,205 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:14:19,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:14:19,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:14:19,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:14:19,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:14:19,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:14:19,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:14:19,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:14:19,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:14:19,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 11:14:19,208 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 11:14:19,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:14:19,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:14:19,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:14:19,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:14:19,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:14:19,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 11:14:19,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:14:19,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:14:19,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:14:19,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:14:19,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:14:19,210 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 11:14:19,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 11:14:19,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:14:19,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:14:19,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:14:19,212 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_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14057487082e35ccfcc2669444e5a8afbb4e40c90cf1c6140cd050e22dabbbb2 [2021-10-24 11:14:19,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:14:19,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:14:19,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:14:19,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:14:19,623 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:14:19,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:14:19,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/8c06c7e09/edb943eba65b46c0b9554f2fe24f8ead/FLAG5d9c2b41a [2021-10-24 11:14:20,246 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:14:20,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:14:20,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/8c06c7e09/edb943eba65b46c0b9554f2fe24f8ead/FLAG5d9c2b41a [2021-10-24 11:14:20,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/data/8c06c7e09/edb943eba65b46c0b9554f2fe24f8ead [2021-10-24 11:14:20,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:14:20,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:14:20,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:14:20,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:14:20,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:14:20,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:20,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a938901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20, skipping insertion in model container [2021-10-24 11:14:20,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:20,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:14:20,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:14:20,847 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_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c[37311,37324] [2021-10-24 11:14:20,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:14:20,883 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:14:20,958 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_ac8794c4-1b97-4293-9746-e0d5a577942d/sv-benchmarks/c/bitvector/s3_clnt_2.BV.c.cil-2a.c[37311,37324] [2021-10-24 11:14:20,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:14:20,974 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:14:20,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20 WrapperNode [2021-10-24 11:14:20,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:14:20,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:14:20,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:14:20,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:14:20,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:20,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:14:21,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:14:21,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:14:21,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:14:21,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:14:21,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:14:21,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:14:21,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:14:21,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (1/1) ... [2021-10-24 11:14:21,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:14:21,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:14:21,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:14:21,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:14:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 11:14:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:14:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:14:21,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:14:21,308 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-24 11:14:21,835 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-24 11:14:21,835 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-24 11:14:21,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:14:21,846 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 11:14:21,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:21 BoogieIcfgContainer [2021-10-24 11:14:21,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:14:21,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:14:21,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:14:21,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:14:21,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:14:20" (1/3) ... [2021-10-24 11:14:21,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df7dfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:21, skipping insertion in model container [2021-10-24 11:14:21,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:14:20" (2/3) ... [2021-10-24 11:14:21,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df7dfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:14:21, skipping insertion in model container [2021-10-24 11:14:21,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:21" (3/3) ... [2021-10-24 11:14:21,860 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.BV.c.cil-2a.c [2021-10-24 11:14:21,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:14:21,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:14:21,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:14:21,937 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 11:14:21,937 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:14:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 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) [2021-10-24 11:14:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-24 11:14:21,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:21,985 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, 1] [2021-10-24 11:14:21,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:22,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2021-10-24 11:14:22,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:22,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358290141] [2021-10-24 11:14:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:22,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:22,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:22,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:22,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 11:14:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:22,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:22,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:22,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:22,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:22,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358290141] [2021-10-24 11:14:22,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358290141] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:22,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:22,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:22,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864290027] [2021-10-24 11:14:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:22,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:22,463 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 124 states have internal predecessors, (213), 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 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:14:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:22,664 INFO L93 Difference]: Finished difference Result 246 states and 421 transitions. [2021-10-24 11:14:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-24 11:14:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:22,679 INFO L225 Difference]: With dead ends: 246 [2021-10-24 11:14:22,679 INFO L226 Difference]: Without dead ends: 112 [2021-10-24 11:14:22,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-24 11:14:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-24 11:14:22,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 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) [2021-10-24 11:14:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2021-10-24 11:14:22,739 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2021-10-24 11:14:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:22,740 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2021-10-24 11:14:22,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-24 11:14:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2021-10-24 11:14:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-24 11:14:22,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:22,744 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:22,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:22,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:22,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:22,958 INFO L82 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2021-10-24 11:14:22,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:22,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722046979] [2021-10-24 11:14:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:22,959 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:22,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:22,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 11:14:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:23,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:23,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:23,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:14:23,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:23,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722046979] [2021-10-24 11:14:23,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722046979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:23,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:23,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:23,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69020282] [2021-10-24 11:14:23,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:23,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:23,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:23,312 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-10-24 11:14:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:23,450 INFO L93 Difference]: Finished difference Result 233 states and 356 transitions. [2021-10-24 11:14:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-10-24 11:14:23,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:23,453 INFO L225 Difference]: With dead ends: 233 [2021-10-24 11:14:23,453 INFO L226 Difference]: Without dead ends: 131 [2021-10-24 11:14:23,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-24 11:14:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2021-10-24 11:14:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 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) [2021-10-24 11:14:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2021-10-24 11:14:23,466 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2021-10-24 11:14:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:23,466 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2021-10-24 11:14:23,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-10-24 11:14:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2021-10-24 11:14:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-24 11:14:23,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:23,469 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:23,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:23,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:23,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash 213639527, now seen corresponding path program 1 times [2021-10-24 11:14:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:23,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385199302] [2021-10-24 11:14:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:23,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:23,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:23,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:23,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 11:14:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:23,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:23,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 11:14:23,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-24 11:14:24,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:24,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385199302] [2021-10-24 11:14:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385199302] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:24,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:24,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:24,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859891257] [2021-10-24 11:14:24,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:24,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:24,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:24,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:24,137 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-24 11:14:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:24,288 INFO L93 Difference]: Finished difference Result 265 states and 400 transitions. [2021-10-24 11:14:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) Word has length 50 [2021-10-24 11:14:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:24,293 INFO L225 Difference]: With dead ends: 265 [2021-10-24 11:14:24,294 INFO L226 Difference]: Without dead ends: 148 [2021-10-24 11:14:24,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-24 11:14:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2021-10-24 11:14:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 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) [2021-10-24 11:14:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2021-10-24 11:14:24,311 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2021-10-24 11:14:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:24,312 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2021-10-24 11:14:24,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 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) [2021-10-24 11:14:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2021-10-24 11:14:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-24 11:14:24,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:24,321 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:24,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:24,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:24,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:24,527 INFO L82 PathProgramCache]: Analyzing trace with hash 370823208, now seen corresponding path program 1 times [2021-10-24 11:14:24,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:24,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404031391] [2021-10-24 11:14:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:24,528 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:24,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:24,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:24,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 11:14:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:24,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:24,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 11:14:24,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:25,031 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 11:14:25,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:25,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404031391] [2021-10-24 11:14:25,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404031391] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:25,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:25,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:14:25,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771113780] [2021-10-24 11:14:25,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:25,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:25,035 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-10-24 11:14:25,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:25,310 INFO L93 Difference]: Finished difference Result 349 states and 534 transitions. [2021-10-24 11:14:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:14:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 67 [2021-10-24 11:14:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:25,312 INFO L225 Difference]: With dead ends: 349 [2021-10-24 11:14:25,313 INFO L226 Difference]: Without dead ends: 215 [2021-10-24 11:14:25,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-24 11:14:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2021-10-24 11:14:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.441747572815534) internal successors, (297), 206 states have internal predecessors, (297), 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) [2021-10-24 11:14:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 297 transitions. [2021-10-24 11:14:25,329 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 297 transitions. Word has length 67 [2021-10-24 11:14:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:25,329 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 297 transitions. [2021-10-24 11:14:25,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-10-24 11:14:25,330 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 297 transitions. [2021-10-24 11:14:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-24 11:14:25,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:25,332 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:25,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:25,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:25,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:25,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1528022105, now seen corresponding path program 1 times [2021-10-24 11:14:25,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:25,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872891239] [2021-10-24 11:14:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:25,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:25,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:25,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 11:14:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:25,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:25,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 11:14:25,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-24 11:14:26,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:26,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872891239] [2021-10-24 11:14:26,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872891239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:26,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:26,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:26,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447653611] [2021-10-24 11:14:26,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:26,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:26,028 INFO L87 Difference]: Start difference. First operand 207 states and 297 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-10-24 11:14:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:26,155 INFO L93 Difference]: Finished difference Result 427 states and 620 transitions. [2021-10-24 11:14:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:26,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 68 [2021-10-24 11:14:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:26,158 INFO L225 Difference]: With dead ends: 427 [2021-10-24 11:14:26,158 INFO L226 Difference]: Without dead ends: 230 [2021-10-24 11:14:26,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-24 11:14:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2021-10-24 11:14:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4266666666666667) internal successors, (321), 225 states have internal predecessors, (321), 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) [2021-10-24 11:14:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 321 transitions. [2021-10-24 11:14:26,170 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 321 transitions. Word has length 68 [2021-10-24 11:14:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:26,171 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 321 transitions. [2021-10-24 11:14:26,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-10-24 11:14:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 321 transitions. [2021-10-24 11:14:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-24 11:14:26,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:26,173 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:26,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:26,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:26,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:26,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1678422895, now seen corresponding path program 1 times [2021-10-24 11:14:26,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:26,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012792707] [2021-10-24 11:14:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:26,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:26,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:26,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 11:14:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:26,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:26,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-24 11:14:26,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-24 11:14:27,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:27,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012792707] [2021-10-24 11:14:27,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012792707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:27,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:27,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:27,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96225075] [2021-10-24 11:14:27,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:27,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:27,032 INFO L87 Difference]: Start difference. First operand 226 states and 321 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-10-24 11:14:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:27,167 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2021-10-24 11:14:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:27,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 84 [2021-10-24 11:14:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:27,170 INFO L225 Difference]: With dead ends: 466 [2021-10-24 11:14:27,170 INFO L226 Difference]: Without dead ends: 250 [2021-10-24 11:14:27,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-24 11:14:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2021-10-24 11:14:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.410569105691057) internal successors, (347), 246 states have internal predecessors, (347), 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) [2021-10-24 11:14:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 347 transitions. [2021-10-24 11:14:27,183 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 347 transitions. Word has length 84 [2021-10-24 11:14:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:27,185 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 347 transitions. [2021-10-24 11:14:27,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-10-24 11:14:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 347 transitions. [2021-10-24 11:14:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-24 11:14:27,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:27,194 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:27,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:27,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:27,418 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:27,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1619803512, now seen corresponding path program 1 times [2021-10-24 11:14:27,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:27,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109861027] [2021-10-24 11:14:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:27,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:27,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:27,421 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:27,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 11:14:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:27,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:27,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 11:14:27,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 11:14:28,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:28,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109861027] [2021-10-24 11:14:28,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109861027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:28,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:28,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:14:28,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542226142] [2021-10-24 11:14:28,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:28,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:28,153 INFO L87 Difference]: Start difference. First operand 247 states and 347 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-10-24 11:14:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:28,212 INFO L93 Difference]: Finished difference Result 743 states and 1042 transitions. [2021-10-24 11:14:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:14:28,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 103 [2021-10-24 11:14:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:28,218 INFO L225 Difference]: With dead ends: 743 [2021-10-24 11:14:28,218 INFO L226 Difference]: Without dead ends: 506 [2021-10-24 11:14:28,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-24 11:14:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-24 11:14:28,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.39009900990099) internal successors, (702), 505 states have internal predecessors, (702), 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) [2021-10-24 11:14:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 702 transitions. [2021-10-24 11:14:28,242 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 702 transitions. Word has length 103 [2021-10-24 11:14:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:28,242 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 702 transitions. [2021-10-24 11:14:28,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-10-24 11:14:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 702 transitions. [2021-10-24 11:14:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-24 11:14:28,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:28,250 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:28,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:28,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:28,463 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:28,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:28,464 INFO L82 PathProgramCache]: Analyzing trace with hash -847602632, now seen corresponding path program 1 times [2021-10-24 11:14:28,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:28,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318342594] [2021-10-24 11:14:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:28,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:28,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:28,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 11:14:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:28,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:28,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-24 11:14:28,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-24 11:14:29,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:29,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318342594] [2021-10-24 11:14:29,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318342594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:29,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:29,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:29,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580667552] [2021-10-24 11:14:29,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:29,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:29,162 INFO L87 Difference]: Start difference. First operand 506 states and 702 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-24 11:14:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:29,195 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2021-10-24 11:14:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:29,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 103 [2021-10-24 11:14:29,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:29,199 INFO L225 Difference]: With dead ends: 1023 [2021-10-24 11:14:29,200 INFO L226 Difference]: Without dead ends: 527 [2021-10-24 11:14:29,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-10-24 11:14:29,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2021-10-24 11:14:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.3859315589353611) internal successors, (729), 526 states have internal predecessors, (729), 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) [2021-10-24 11:14:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 729 transitions. [2021-10-24 11:14:29,225 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 729 transitions. Word has length 103 [2021-10-24 11:14:29,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:29,227 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 729 transitions. [2021-10-24 11:14:29,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-24 11:14:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 729 transitions. [2021-10-24 11:14:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-24 11:14:29,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:29,230 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:29,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:29,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:29,443 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:29,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:29,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1168582955, now seen corresponding path program 1 times [2021-10-24 11:14:29,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:29,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340372521] [2021-10-24 11:14:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:29,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:29,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:29,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 11:14:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:29,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:29,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-24 11:14:29,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-24 11:14:30,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:30,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340372521] [2021-10-24 11:14:30,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340372521] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:30,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:30,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:30,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310686008] [2021-10-24 11:14:30,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:30,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:30,218 INFO L87 Difference]: Start difference. First operand 527 states and 729 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-24 11:14:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:30,244 INFO L93 Difference]: Finished difference Result 1070 states and 1478 transitions. [2021-10-24 11:14:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:30,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 104 [2021-10-24 11:14:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:30,249 INFO L225 Difference]: With dead ends: 1070 [2021-10-24 11:14:30,249 INFO L226 Difference]: Without dead ends: 553 [2021-10-24 11:14:30,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-10-24 11:14:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2021-10-24 11:14:30,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.3804347826086956) internal successors, (762), 552 states have internal predecessors, (762), 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) [2021-10-24 11:14:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 762 transitions. [2021-10-24 11:14:30,272 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 762 transitions. Word has length 104 [2021-10-24 11:14:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:30,272 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 762 transitions. [2021-10-24 11:14:30,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-24 11:14:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 762 transitions. [2021-10-24 11:14:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-24 11:14:30,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:30,275 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:30,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:30,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:30,487 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash -53319870, now seen corresponding path program 1 times [2021-10-24 11:14:30,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:30,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320903675] [2021-10-24 11:14:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:30,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:30,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:30,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:30,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 11:14:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:30,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:30,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-24 11:14:31,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-24 11:14:31,282 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:31,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320903675] [2021-10-24 11:14:31,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320903675] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:31,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:31,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:14:31,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807300003] [2021-10-24 11:14:31,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:31,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:31,284 INFO L87 Difference]: Start difference. First operand 553 states and 762 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-10-24 11:14:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:31,372 INFO L93 Difference]: Finished difference Result 1520 states and 2113 transitions. [2021-10-24 11:14:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:14:31,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 105 [2021-10-24 11:14:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:31,379 INFO L225 Difference]: With dead ends: 1520 [2021-10-24 11:14:31,379 INFO L226 Difference]: Without dead ends: 1003 [2021-10-24 11:14:31,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-10-24 11:14:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 1003. [2021-10-24 11:14:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3892215568862276) internal successors, (1392), 1002 states have internal predecessors, (1392), 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) [2021-10-24 11:14:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1392 transitions. [2021-10-24 11:14:31,413 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1392 transitions. Word has length 105 [2021-10-24 11:14:31,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:31,414 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1392 transitions. [2021-10-24 11:14:31,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-10-24 11:14:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1392 transitions. [2021-10-24 11:14:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-24 11:14:31,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:31,418 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:31,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:31,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:31,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:31,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1519363111, now seen corresponding path program 1 times [2021-10-24 11:14:31,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:31,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148558787] [2021-10-24 11:14:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:31,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:31,639 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:31,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-24 11:14:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:32,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-24 11:14:32,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-24 11:14:32,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:32,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148558787] [2021-10-24 11:14:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148558787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:32,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 11:14:32,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045791240] [2021-10-24 11:14:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 11:14:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 11:14:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:32,733 INFO L87 Difference]: Start difference. First operand 1003 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-10-24 11:14:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:32,939 INFO L93 Difference]: Finished difference Result 2091 states and 2938 transitions. [2021-10-24 11:14:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 11:14:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 173 [2021-10-24 11:14:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:32,946 INFO L225 Difference]: With dead ends: 2091 [2021-10-24 11:14:32,946 INFO L226 Difference]: Without dead ends: 1124 [2021-10-24 11:14:32,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 11:14:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-10-24 11:14:32,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1095. [2021-10-24 11:14:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 1.3711151736745886) internal successors, (1500), 1094 states have internal predecessors, (1500), 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) [2021-10-24 11:14:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1500 transitions. [2021-10-24 11:14:32,997 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1500 transitions. Word has length 173 [2021-10-24 11:14:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:32,998 INFO L470 AbstractCegarLoop]: Abstraction has 1095 states and 1500 transitions. [2021-10-24 11:14:32,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-10-24 11:14:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1500 transitions. [2021-10-24 11:14:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-10-24 11:14:33,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:33,002 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:33,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:33,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:33,215 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash -759567935, now seen corresponding path program 1 times [2021-10-24 11:14:33,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:33,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036592926] [2021-10-24 11:14:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:33,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:33,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:33,217 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:33,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 11:14:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:14:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:14:33,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:14:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-24 11:14:34,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:14:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-10-24 11:14:34,762 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 11:14:34,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036592926] [2021-10-24 11:14:34,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036592926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:14:34,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:14:34,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 11:14:34,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354275590] [2021-10-24 11:14:34,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:14:34,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 11:14:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:14:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:34,764 INFO L87 Difference]: Start difference. First operand 1095 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-10-24 11:14:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:14:34,822 INFO L93 Difference]: Finished difference Result 2409 states and 3304 transitions. [2021-10-24 11:14:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:14:34,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 194 [2021-10-24 11:14:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:14:34,830 INFO L225 Difference]: With dead ends: 2409 [2021-10-24 11:14:34,830 INFO L226 Difference]: Without dead ends: 1350 [2021-10-24 11:14:34,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:14:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2021-10-24 11:14:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1350. [2021-10-24 11:14:34,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.369162342475908) internal successors, (1847), 1349 states have internal predecessors, (1847), 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) [2021-10-24 11:14:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1847 transitions. [2021-10-24 11:14:34,883 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1847 transitions. Word has length 194 [2021-10-24 11:14:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:14:34,883 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1847 transitions. [2021-10-24 11:14:34,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2021-10-24 11:14:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1847 transitions. [2021-10-24 11:14:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-24 11:14:34,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:14:34,889 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 11:14:34,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:35,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:35,104 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:14:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:14:35,105 INFO L82 PathProgramCache]: Analyzing trace with hash 342847369, now seen corresponding path program 1 times [2021-10-24 11:14:35,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 11:14:35,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700544247] [2021-10-24 11:14:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:14:35,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 11:14:35,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 11:14:35,107 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 11:14:35,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-24 11:14:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:14:35,693 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 11:14:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 11:14:36,115 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 11:14:36,115 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 11:14:36,116 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:14:36,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-24 11:14:36,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 11:14:36,327 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:14:36,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:14:36 BoogieIcfgContainer [2021-10-24 11:14:36,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:14:36,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:14:36,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:14:36,485 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:14:36,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:14:21" (3/4) ... [2021-10-24 11:14:36,487 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 11:14:36,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:14:36,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:14:36,677 INFO L168 Benchmark]: Toolchain (without parser) took 16126.76 ms. Allocated memory was 58.7 MB in the beginning and 107.0 MB in the end (delta: 48.2 MB). Free memory was 35.5 MB in the beginning and 50.2 MB in the end (delta: -14.7 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,677 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:14:36,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.76 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 38.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 35.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,678 INFO L168 Benchmark]: Boogie Preprocessor took 70.37 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 33.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,679 INFO L168 Benchmark]: RCFGBuilder took 750.92 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 39.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,679 INFO L168 Benchmark]: TraceAbstraction took 14632.53 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 39.0 MB in the beginning and 38.5 MB in the end (delta: 538.6 kB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,680 INFO L168 Benchmark]: Witness Printer took 190.72 ms. Allocated memory is still 107.0 MB. Free memory was 38.5 MB in the beginning and 50.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:14:36,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 424.76 ms. Allocated memory is still 58.7 MB. Free memory was 35.3 MB in the beginning and 38.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.20 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 35.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.37 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 33.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 750.92 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 39.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14632.53 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 39.0 MB in the beginning and 38.5 MB in the end (delta: 538.6 kB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 190.72 ms. Allocated memory is still 107.0 MB. Free memory was 38.5 MB in the beginning and 50.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.7 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 - CounterExampleResult [Line: 609]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L618] int __retres1 ; [L11] int s__info_callback = __VERIFIER_nondet_int(); [L12] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] unsigned int s__version = __VERIFIER_nondet_uint(); [L17] int s__type ; [L18] int s__init_num ; [L19] int s__bbio = __VERIFIER_nondet_int(); [L20] int s__wbio = __VERIFIER_nondet_int(); [L21] int s__hit = __VERIFIER_nondet_int(); [L22] int s__rwstate ; [L23] int s__init_buf___0 = __VERIFIER_nondet_int(); [L24] int s__debug = __VERIFIER_nondet_int(); [L25] int s__shutdown ; [L26] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L27] unsigned int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_uint(); [L28] unsigned int s__ctx__stats__sess_connect = __VERIFIER_nondet_uint(); [L29] unsigned int s__ctx__stats__sess_hit = __VERIFIER_nondet_uint(); [L30] unsigned int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_uint(); [L31] int s__s3__change_cipher_spec ; [L32] int s__s3__flags = __VERIFIER_nondet_int(); [L33] int s__s3__delay_buf_pop_ret ; [L34] int s__s3__tmp__cert_req = __VERIFIER_nondet_int(); [L35] int s__s3__tmp__new_compression = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int s__session__compress_meth ; [L43] int buf ; [L44] unsigned long tmp ; [L45] unsigned long l ; [L46] int num1 = __VERIFIER_nondet_int(); [L47] int cb ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int tmp___0 ; [L53] unsigned int tmp___1 = __VERIFIER_nondet_uint(); [L54] unsigned int tmp___2 = __VERIFIER_nondet_uint(); [L55] int tmp___3 = __VERIFIER_nondet_int(); [L56] int tmp___4 = __VERIFIER_nondet_int(); [L57] int tmp___5 = __VERIFIER_nondet_int(); [L58] int tmp___6 = __VERIFIER_nondet_int(); [L59] int tmp___7 = __VERIFIER_nondet_int(); [L60] int tmp___8 = __VERIFIER_nondet_int(); [L61] int tmp___9 = __VERIFIER_nondet_int(); [L62] int blastFlag ; [L63] int ag_X ; [L64] int ag_Y = __VERIFIER_nondet_int(); [L65] int __retres59 ; [L68] s__state = 12292 [L69] blastFlag = 0 [L70] tmp = __VERIFIER_nondet_int() [L71] cb = 0 [L72] ret = -1 [L73] skip = 0 [L74] tmp___0 = 0 [L75] COND TRUE s__info_callback != 0 [L76] cb = s__info_callback [L84] s__in_handshake = s__in_handshake + 1 [L85] COND FALSE !(tmp___1 - 12288) [L95] COND TRUE 1 [L97] state = s__state [L98] COND TRUE s__state == 12292 [L201] s__new_session = 1 [L202] s__state = 4096 [L203] s__ctx__stats__sess_connect_renegotiate = s__ctx__stats__sess_connect_renegotiate + 1 [L208] s__server = 0 [L209] COND TRUE cb != 0 [L214] COND FALSE !(s__version - 65280 != 768) [L220] s__type = 4096 [L221] COND FALSE !(s__init_buf___0 == 0) [L239] COND FALSE !(! tmp___4) [L245] COND FALSE !(! tmp___5) [L251] s__state = 4368 [L252] s__ctx__stats__sess_connect = s__ctx__stats__sess_connect + 1 [L253] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND TRUE blastFlag == 0 [L260] blastFlag = 1 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND TRUE blastFlag == 1 [L285] blastFlag = 2 [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND TRUE blastFlag == 2 [L308] blastFlag = 3 [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND TRUE blastFlag == 3 [L325] blastFlag = 4 [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND FALSE !(blastFlag == 5) [L352] COND FALSE !(ret <= 0) [L357] s__state = ag_X ^ ag_Y [L358] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND TRUE s__state == 4368 [L257] s__shutdown = 0 [L258] ret = __VERIFIER_nondet_int() [L259] COND FALSE !(blastFlag == 0) [L262] COND TRUE blastFlag == 4 [L263] blastFlag = 5 [L268] COND FALSE !(ret <= 0) [L273] s__state = 4384 [L274] s__init_num = 0 [L275] COND TRUE s__bbio != s__wbio [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND TRUE s__state == 4384 [L283] ret = __VERIFIER_nondet_int() [L284] COND FALSE !(blastFlag == 1) [L289] COND FALSE !(ret <= 0) [L294] COND FALSE !(\read(s__hit)) [L297] s__state = 4400 [L299] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND TRUE s__state == 4400 [L303] COND FALSE !((unsigned long )s__s3__tmp__new_cipher__algorithms - 256UL) [L306] ret = __VERIFIER_nondet_int() [L307] COND FALSE !(blastFlag == 2) [L312] COND FALSE !(ret <= 0) [L318] s__state = 4416 [L319] s__init_num = 0 [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND TRUE s__state == 4416 [L323] ret = __VERIFIER_nondet_int() [L324] COND FALSE !(blastFlag == 3) [L329] COND FALSE !(ret <= 0) [L334] s__state = 4432 [L335] ag_X = (unsigned short)65535 [L336] s__init_num = 0 [L337] COND FALSE !(! tmp___6) [L567] COND FALSE !(! s__s3__tmp__reuse_message) [L596] skip = 0 [L95] COND TRUE 1 [L97] state = s__state [L98] COND FALSE !(s__state == 12292) [L101] COND FALSE !(s__state == 16384) [L104] COND FALSE !(s__state == 4096) [L107] COND FALSE !(s__state == 20480) [L110] COND FALSE !(s__state == 4099) [L113] COND FALSE !(s__state == 4368) [L116] COND FALSE !(s__state == 4369) [L119] COND FALSE !(s__state == 4384) [L122] COND FALSE !(s__state == 4385) [L125] COND FALSE !(s__state == 4400) [L128] COND FALSE !(s__state == 4401) [L131] COND FALSE !(s__state == 4416) [L134] COND FALSE !(s__state == 4417) [L137] COND TRUE s__state == 4432 [L346] ret = __VERIFIER_nondet_int() [L347] COND TRUE blastFlag == 5 [L609] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14398.8ms, OverallIterations: 13, TraceHistogramMax: 11, EmptinessCheckTime: 70.9ms, AutomataDifference: 1613.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2289 SDtfs, 1120 SDslu, 1557 SDs, 0 SdLazy, 933 SolverSat, 167 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 905.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2198 GetRequests, 2182 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=12, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 308.4ms AutomataMinimizationTime, 12 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 242.2ms SsaConstructionTime, 669.0ms SatisfiabilityAnalysisTime, 5453.3ms InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2198 ConstructedInterpolants, 0 QuantifiedInterpolants, 3411 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1990 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 3576/3576 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-24 11:14:36,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac8794c4-1b97-4293-9746-e0d5a577942d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...