./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09f813c788ce76f2fed6ff9e53c54c81ca842bfc .......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:44,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:44,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:44,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:44,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:44,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:44,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:44,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:44,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:44,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:44,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:44,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:44,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:44,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:44,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:44,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:44,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:44,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:44,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:44,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:44,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:44,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:44,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:44,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:44,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:44,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:44,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:44,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:44,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:44,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:44,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:44,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:44,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:44,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:44,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:44,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:44,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:44,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:44,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:45,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:45,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:45,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:23:45,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:45,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:45,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:45,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:45,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:45,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:45,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:23:45,057 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:45,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:45,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:23:45,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:23:45,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:45,059 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:23:45,059 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:23:45,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:23:45,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:45,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:45,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:45,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:45,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:45,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:45,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:45,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:45,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:45,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:45,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:45,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:45,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:45,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:45,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:45,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:45,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:45,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:45,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:45,067 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:23:45,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:23:45,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:45,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:45,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:45,069 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2021-10-13 07:23:45,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:45,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:45,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:45,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:45,359 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:45,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-10-13 07:23:45,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/9c22d83fd/3289f385500945348ebb41189ff84156/FLAG6f634a03a [2021-10-13 07:23:45,968 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:45,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-10-13 07:23:45,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/9c22d83fd/3289f385500945348ebb41189ff84156/FLAG6f634a03a [2021-10-13 07:23:46,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/9c22d83fd/3289f385500945348ebb41189ff84156 [2021-10-13 07:23:46,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:46,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:46,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:46,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:46,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:46,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181df846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46, skipping insertion in model container [2021-10-13 07:23:46,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:46,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:46,634 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2021-10-13 07:23:46,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:46,687 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:46,699 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2021-10-13 07:23:46,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:46,744 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:46,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46 WrapperNode [2021-10-13 07:23:46,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:46,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:46,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:46,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:46,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:46,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:46,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:46,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:46,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:46,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:46,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:46,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:46,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (1/1) ... [2021-10-13 07:23:46,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:46,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:46,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:23:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:47,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:47,591 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-13 07:23:47,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:47 BoogieIcfgContainer [2021-10-13 07:23:47,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:47,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:47,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:47,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:47,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:46" (1/3) ... [2021-10-13 07:23:47,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655ff1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:47, skipping insertion in model container [2021-10-13 07:23:47,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:46" (2/3) ... [2021-10-13 07:23:47,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655ff1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:47, skipping insertion in model container [2021-10-13 07:23:47,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:47" (3/3) ... [2021-10-13 07:23:47,602 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-10-13 07:23:47,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:47,608 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:23:47,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:47,656 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:47,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:23:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 54 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:47,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:23:47,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:47,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:47,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash -381959243, now seen corresponding path program 1 times [2021-10-13 07:23:47,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:47,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563356968] [2021-10-13 07:23:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:47,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:47,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:47,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563356968] [2021-10-13 07:23:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563356968] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:47,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:47,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:47,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741614205] [2021-10-13 07:23:47,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:47,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:48,017 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 54 states have internal predecessors, (94), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:48,164 INFO L93 Difference]: Finished difference Result 101 states and 170 transitions. [2021-10-13 07:23:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:48,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 07:23:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:48,179 INFO L225 Difference]: With dead ends: 101 [2021-10-13 07:23:48,179 INFO L226 Difference]: Without dead ends: 53 [2021-10-13 07:23:48,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:48,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-13 07:23:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-10-13 07:23:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 75 transitions. [2021-10-13 07:23:48,228 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 75 transitions. Word has length 14 [2021-10-13 07:23:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:48,229 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 75 transitions. [2021-10-13 07:23:48,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 75 transitions. [2021-10-13 07:23:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:23:48,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:48,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:48,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:23:48,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash 697101634, now seen corresponding path program 1 times [2021-10-13 07:23:48,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:48,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069786150] [2021-10-13 07:23:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:48,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:48,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:48,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069786150] [2021-10-13 07:23:48,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069786150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:48,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:48,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:23:48,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967500557] [2021-10-13 07:23:48,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:48,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:48,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:48,329 INFO L87 Difference]: Start difference. First operand 50 states and 75 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:48,388 INFO L93 Difference]: Finished difference Result 99 states and 147 transitions. [2021-10-13 07:23:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:48,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 07:23:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:48,394 INFO L225 Difference]: With dead ends: 99 [2021-10-13 07:23:48,394 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 07:23:48,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 07:23:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-10-13 07:23:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-10-13 07:23:48,421 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 17 [2021-10-13 07:23:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:48,422 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-10-13 07:23:48,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-10-13 07:23:48,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 07:23:48,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:48,425 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:48,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:23:48,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:48,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:48,427 INFO L82 PathProgramCache]: Analyzing trace with hash -542227389, now seen corresponding path program 1 times [2021-10-13 07:23:48,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:48,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949068596] [2021-10-13 07:23:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:48,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949068596] [2021-10-13 07:23:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949068596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:48,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:48,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:23:48,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690614050] [2021-10-13 07:23:48,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:48,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:23:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:48,585 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-10-13 07:23:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:48,696 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2021-10-13 07:23:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:48,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-10-13 07:23:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:48,700 INFO L225 Difference]: With dead ends: 105 [2021-10-13 07:23:48,700 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 07:23:48,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 07:23:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2021-10-13 07:23:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2021-10-13 07:23:48,718 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 19 [2021-10-13 07:23:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:48,718 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2021-10-13 07:23:48,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-10-13 07:23:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2021-10-13 07:23:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 07:23:48,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:48,719 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:23:48,719 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1816809049, now seen corresponding path program 1 times [2021-10-13 07:23:48,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:23:48,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419681926] [2021-10-13 07:23:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:48,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:23:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:48,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:23:48,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419681926] [2021-10-13 07:23:48,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419681926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:23:48,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126237412] [2021-10-13 07:23:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:48,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:48,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:48,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:23:48,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:23:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:48,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:23:48,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:48,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:49,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126237412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:49,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1858620713] [2021-10-13 07:23:49,090 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-13 07:23:49,090 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:23:49,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:23:49,100 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:23:49,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:23:49,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,177 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:49,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:23:49,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:23:49,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:23:49,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-13 07:23:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:49,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:49,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:23:49,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:23:49,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:23:49,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:23:49,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:23:49,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:23:49,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:23:49,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-13 07:23:49,310 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:23:49,311 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:144, output treesize:147 [2021-10-13 07:23:49,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:49,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:23:49,538 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:23:49,541 INFO L168 Benchmark]: Toolchain (without parser) took 3205.01 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 85.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:49,541 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:49,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.68 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 72.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:49,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 70.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:49,543 INFO L168 Benchmark]: Boogie Preprocessor took 38.26 ms. Allocated memory is still 100.7 MB. Free memory was 70.5 MB in the beginning and 69.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:49,543 INFO L168 Benchmark]: RCFGBuilder took 759.30 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 45.9 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:49,544 INFO L168 Benchmark]: TraceAbstraction took 1944.94 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 85.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:49,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 52.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.68 ms. Allocated memory is still 100.7 MB. Free memory was 58.3 MB in the beginning and 72.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 100.7 MB. Free memory was 72.9 MB in the beginning and 70.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.26 ms. Allocated memory is still 100.7 MB. Free memory was 70.5 MB in the beginning and 69.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 759.30 ms. Allocated memory is still 100.7 MB. Free memory was 69.0 MB in the beginning and 45.9 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1944.94 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 85.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:23:49,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:23:52,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:52,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:52,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:52,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:52,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:52,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:52,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:52,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:52,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:52,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:52,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:52,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:52,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:52,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:52,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:52,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:52,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:52,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:52,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:52,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:52,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:52,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:52,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:52,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:52,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:52,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:52,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:52,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:52,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:52,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:52,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:52,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:52,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:52,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:52,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:52,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:52,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:52,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:52,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:52,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:52,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:23:52,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:52,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:52,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:52,311 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:52,311 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:52,312 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:52,312 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:52,312 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:52,312 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:52,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:52,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:52,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:52,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:52,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:23:52,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:52,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:23:52,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:52,315 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:23:52,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:23:52,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:52,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:23:52,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:52,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:23:52,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:52,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:23:52,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:52,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:52,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:52,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:52,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:23:52,318 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:23:52,319 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:52,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:23:52,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:52,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:52,320 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2021-10-13 07:23:52,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:52,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:52,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:52,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:52,676 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:52,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-10-13 07:23:52,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/e8ca68402/9371498f1d3648b7b0b23139c4e92b2c/FLAG1d94d8326 [2021-10-13 07:23:53,250 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:53,251 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2021-10-13 07:23:53,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/e8ca68402/9371498f1d3648b7b0b23139c4e92b2c/FLAG1d94d8326 [2021-10-13 07:23:53,627 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/data/e8ca68402/9371498f1d3648b7b0b23139c4e92b2c [2021-10-13 07:23:53,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:53,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:53,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:53,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:53,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:53,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553510ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53, skipping insertion in model container [2021-10-13 07:23:53,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:53,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:53,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:53,827 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2021-10-13 07:23:53,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:53,932 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:53,945 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_4caa8d53-23de-47da-9ceb-2927ec1941bc/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2021-10-13 07:23:53,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:53,986 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:53,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53 WrapperNode [2021-10-13 07:23:53,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:53,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:53,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:53,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:53,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:54,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:54,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:54,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:54,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:54,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:54,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:54,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:54,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (1/1) ... [2021-10-13 07:23:54,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:54,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:54,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:54,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:23:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:54,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:54,669 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-10-13 07:23:54,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:54 BoogieIcfgContainer [2021-10-13 07:23:54,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:54,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:54,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:54,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:54,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:53" (1/3) ... [2021-10-13 07:23:54,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e07d0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:54, skipping insertion in model container [2021-10-13 07:23:54,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:53" (2/3) ... [2021-10-13 07:23:54,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e07d0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:54, skipping insertion in model container [2021-10-13 07:23:54,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:54" (3/3) ... [2021-10-13 07:23:54,679 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-10-13 07:23:54,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:54,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:23:54,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:54,773 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:54,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:23:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:23:54,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:54,798 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, 1] [2021-10-13 07:23:54,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2021-10-13 07:23:54,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:54,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635691812] [2021-10-13 07:23:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:54,819 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:54,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:54,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:54,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:23:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:54,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:54,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:55,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:55,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:55,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635691812] [2021-10-13 07:23:55,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635691812] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:55,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:55,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513392275] [2021-10-13 07:23:55,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:55,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:55,168 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:55,397 INFO L93 Difference]: Finished difference Result 187 states and 314 transitions. [2021-10-13 07:23:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 07:23:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:55,416 INFO L225 Difference]: With dead ends: 187 [2021-10-13 07:23:55,417 INFO L226 Difference]: Without dead ends: 117 [2021-10-13 07:23:55,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-13 07:23:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 65. [2021-10-13 07:23:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.484375) internal successors, (95), 64 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 95 transitions. [2021-10-13 07:23:55,477 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 95 transitions. Word has length 25 [2021-10-13 07:23:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:55,477 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 95 transitions. [2021-10-13 07:23:55,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 95 transitions. [2021-10-13 07:23:55,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:23:55,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:55,479 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, 1, 1, 1, 1] [2021-10-13 07:23:55,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:23:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:55,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash 484214217, now seen corresponding path program 1 times [2021-10-13 07:23:55,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:55,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010921009] [2021-10-13 07:23:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:55,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:55,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:55,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:23:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:55,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:55,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:55,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:55,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:55,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010921009] [2021-10-13 07:23:55,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010921009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:55,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:55,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:23:55,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218939516] [2021-10-13 07:23:55,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:56,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:56,003 INFO L87 Difference]: Start difference. First operand 65 states and 95 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:56,105 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2021-10-13 07:23:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:56,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-13 07:23:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:56,108 INFO L225 Difference]: With dead ends: 167 [2021-10-13 07:23:56,109 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 07:23:56,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 07:23:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2021-10-13 07:23:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 77 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) [2021-10-13 07:23:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 111 transitions. [2021-10-13 07:23:56,122 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 111 transitions. Word has length 28 [2021-10-13 07:23:56,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,122 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 111 transitions. [2021-10-13 07:23:56,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:56,123 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 111 transitions. [2021-10-13 07:23:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:23:56,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,125 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, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:56,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:56,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:56,336 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -326443096, now seen corresponding path program 1 times [2021-10-13 07:23:56,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:56,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541721193] [2021-10-13 07:23:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:56,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:56,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:56,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:56,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:23:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:56,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:23:56,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:56,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:56,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:56,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541721193] [2021-10-13 07:23:56,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541721193] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:56,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:56,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:23:56,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850632712] [2021-10-13 07:23:56,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:23:56,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:23:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:23:56,708 INFO L87 Difference]: Start difference. First operand 78 states and 111 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-13 07:23:56,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:56,911 INFO L93 Difference]: Finished difference Result 202 states and 283 transitions. [2021-10-13 07:23:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:23:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 30 [2021-10-13 07:23:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:56,919 INFO L225 Difference]: With dead ends: 202 [2021-10-13 07:23:56,919 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 07:23:56,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 07:23:56,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 76. [2021-10-13 07:23:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3866666666666667) internal successors, (104), 75 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) [2021-10-13 07:23:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2021-10-13 07:23:56,936 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 30 [2021-10-13 07:23:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:56,936 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2021-10-13 07:23:56,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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) [2021-10-13 07:23:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2021-10-13 07:23:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 07:23:56,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:56,943 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:56,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:57,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:57,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:57,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1465088215, now seen corresponding path program 1 times [2021-10-13 07:23:57,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:57,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373282142] [2021-10-13 07:23:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:57,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:57,169 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:57,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:23:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:57,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:57,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:57,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:57,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:57,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373282142] [2021-10-13 07:23:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373282142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:57,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [773076381] [2021-10-13 07:23:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:57,581 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:23:57,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:23:57,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:23:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:57,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:57,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:23:57,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:23:57,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [773076381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:57,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:23:57,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-10-13 07:23:57,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091414896] [2021-10-13 07:23:57,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:57,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:23:57,974 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:57,986 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2021-10-13 07:23:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:57,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 34 [2021-10-13 07:23:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:57,988 INFO L225 Difference]: With dead ends: 95 [2021-10-13 07:23:57,988 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:23:57,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:23:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:23:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 07:23:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 75 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 103 transitions. [2021-10-13 07:23:57,997 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 103 transitions. Word has length 34 [2021-10-13 07:23:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:57,997 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 103 transitions. [2021-10-13 07:23:57,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 103 transitions. [2021-10-13 07:23:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 07:23:57,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:57,999 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:58,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:58,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:58,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:58,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:58,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2026106543, now seen corresponding path program 1 times [2021-10-13 07:23:58,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:58,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599757469] [2021-10-13 07:23:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:58,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:58,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:23:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:58,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:58,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:58,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:58,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:58,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599757469] [2021-10-13 07:23:58,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599757469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:23:58,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1315501979] [2021-10-13 07:23:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:58,877 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:23:58,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:23:58,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:23:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:59,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:23:59,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:23:59,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1315501979] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:59,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:23:59,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-10-13 07:23:59,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131667191] [2021-10-13 07:23:59,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:23:59,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:23:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:23:59,341 INFO L87 Difference]: Start difference. First operand 76 states and 103 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:59,381 INFO L93 Difference]: Finished difference Result 96 states and 131 transitions. [2021-10-13 07:23:59,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:59,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 [2021-10-13 07:23:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:59,382 INFO L225 Difference]: With dead ends: 96 [2021-10-13 07:23:59,382 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 07:23:59,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:23:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 07:23:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 07:23:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.36) internal successors, (102), 75 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 102 transitions. [2021-10-13 07:23:59,389 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 102 transitions. Word has length 36 [2021-10-13 07:23:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:59,390 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 102 transitions. [2021-10-13 07:23:59,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:23:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 102 transitions. [2021-10-13 07:23:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 07:23:59,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:59,391 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:23:59,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:59,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:59,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:59,801 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:23:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:59,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 1 times [2021-10-13 07:23:59,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:59,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851183612] [2021-10-13 07:23:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:59,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:59,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:59,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:23:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:59,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:59,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:00,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:00,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:00,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851183612] [2021-10-13 07:24:00,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851183612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:00,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1928870212] [2021-10-13 07:24:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:00,245 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:00,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:00,246 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-13 07:24:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:00,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:24:00,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:00,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:00,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1928870212] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:00,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:24:00,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-10-13 07:24:00,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796059388] [2021-10-13 07:24:00,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:24:00,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:24:00,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:24:00,830 INFO L87 Difference]: Start difference. First operand 76 states and 102 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:00,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:00,994 INFO L93 Difference]: Finished difference Result 199 states and 263 transitions. [2021-10-13 07:24:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:24:00,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 07:24:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:00,996 INFO L225 Difference]: With dead ends: 199 [2021-10-13 07:24:00,996 INFO L226 Difference]: Without dead ends: 195 [2021-10-13 07:24:00,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:24:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-10-13 07:24:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 133. [2021-10-13 07:24:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.371212121212121) internal successors, (181), 132 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2021-10-13 07:24:01,009 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 36 [2021-10-13 07:24:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:01,009 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2021-10-13 07:24:01,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2021-10-13 07:24:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:24:01,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:01,011 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:24:01,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:01,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:01,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:01,414 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:01,429 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2021-10-13 07:24:01,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:01,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134416952] [2021-10-13 07:24:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:01,430 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:01,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:01,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:01,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:24:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:01,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:01,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:01,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:01,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:01,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134416952] [2021-10-13 07:24:01,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134416952] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:01,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [982369412] [2021-10-13 07:24:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:01,869 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:01,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:01,874 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:01,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:24:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:24:02,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:02,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:02,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [982369412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:02,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:24:02,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 11 [2021-10-13 07:24:02,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203951464] [2021-10-13 07:24:02,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:24:02,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:24:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:24:02,370 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:02,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:02,440 INFO L93 Difference]: Finished difference Result 152 states and 200 transitions. [2021-10-13 07:24:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:24:02,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 38 [2021-10-13 07:24:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:02,442 INFO L225 Difference]: With dead ends: 152 [2021-10-13 07:24:02,442 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 07:24:02,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:24:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 07:24:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2021-10-13 07:24:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3546099290780143) internal successors, (191), 141 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 191 transitions. [2021-10-13 07:24:02,453 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 191 transitions. Word has length 38 [2021-10-13 07:24:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:02,454 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 191 transitions. [2021-10-13 07:24:02,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 191 transitions. [2021-10-13 07:24:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 07:24:02,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:02,455 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:24:02,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:02,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:02,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:02,867 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:02,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:02,868 INFO L82 PathProgramCache]: Analyzing trace with hash 510506505, now seen corresponding path program 1 times [2021-10-13 07:24:02,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:02,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268855381] [2021-10-13 07:24:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:02,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:02,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:02,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:02,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 07:24:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:03,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:03,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:03,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:03,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:03,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268855381] [2021-10-13 07:24:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268855381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:03,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [670941100] [2021-10-13 07:24:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:03,365 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:03,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:03,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-10-13 07:24:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:03,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:03,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:03,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [670941100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:03,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961171828] [2021-10-13 07:24:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:03,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:24:03,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:24:03,913 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:24:03,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 07:24:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:04,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:24:04,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:04,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:04,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961171828] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:04,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-13 07:24:04,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [5, 5, 5, 5] total 13 [2021-10-13 07:24:04,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789688653] [2021-10-13 07:24:04,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:24:04,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:24:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:24:04,421 INFO L87 Difference]: Start difference. First operand 142 states and 191 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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) [2021-10-13 07:24:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:04,538 INFO L93 Difference]: Finished difference Result 147 states and 195 transitions. [2021-10-13 07:24:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:24:04,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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 38 [2021-10-13 07:24:04,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:04,540 INFO L225 Difference]: With dead ends: 147 [2021-10-13 07:24:04,541 INFO L226 Difference]: Without dead ends: 137 [2021-10-13 07:24:04,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:24:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-10-13 07:24:04,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-10-13 07:24:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.338235294117647) internal successors, (182), 136 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2021-10-13 07:24:04,549 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 38 [2021-10-13 07:24:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:04,550 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2021-10-13 07:24:04,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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) [2021-10-13 07:24:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2021-10-13 07:24:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 07:24:04,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:04,551 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:24:04,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-13 07:24:04,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 07:24:04,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-10-13 07:24:05,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:05,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:05,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1741694339, now seen corresponding path program 1 times [2021-10-13 07:24:05,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:05,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665331739] [2021-10-13 07:24:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:05,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:05,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:24:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:05,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:05,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:05,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:05,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665331739] [2021-10-13 07:24:05,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665331739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:05,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1608739376] [2021-10-13 07:24:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:05,762 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:05,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:05,766 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:05,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-13 07:24:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:06,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:24:06,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:06,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:06,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1608739376] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:06,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:24:06,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5, 5] total 12 [2021-10-13 07:24:06,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331928320] [2021-10-13 07:24:06,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:24:06,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:24:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:24:06,395 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:06,534 INFO L93 Difference]: Finished difference Result 209 states and 265 transitions. [2021-10-13 07:24:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:24:06,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 07:24:06,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:06,538 INFO L225 Difference]: With dead ends: 209 [2021-10-13 07:24:06,538 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 07:24:06,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-13 07:24:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 07:24:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 145. [2021-10-13 07:24:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 144 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2021-10-13 07:24:06,549 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 39 [2021-10-13 07:24:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:06,549 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2021-10-13 07:24:06,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2021-10-13 07:24:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 07:24:06,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:06,551 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:24:06,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:06,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 07:24:06,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:06,953 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -301570766, now seen corresponding path program 1 times [2021-10-13 07:24:06,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:06,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780907092] [2021-10-13 07:24:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:06,954 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:06,955 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:06,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:24:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:07,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:07,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:07,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:07,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780907092] [2021-10-13 07:24:07,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780907092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:07,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096412705] [2021-10-13 07:24:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:07,530 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:07,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:07,531 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:07,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-13 07:24:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:07,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:24:07,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:08,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:08,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2096412705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:08,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:24:08,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 13 [2021-10-13 07:24:08,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731092254] [2021-10-13 07:24:08,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:24:08,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:24:08,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:24:08,315 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:08,601 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2021-10-13 07:24:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:24:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 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 43 [2021-10-13 07:24:08,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:08,603 INFO L225 Difference]: With dead ends: 267 [2021-10-13 07:24:08,603 INFO L226 Difference]: Without dead ends: 217 [2021-10-13 07:24:08,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 265.7ms TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 07:24:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-13 07:24:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 163. [2021-10-13 07:24:08,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3024691358024691) internal successors, (211), 162 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) [2021-10-13 07:24:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2021-10-13 07:24:08,614 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 43 [2021-10-13 07:24:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:08,615 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2021-10-13 07:24:08,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2021-10-13 07:24:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 07:24:08,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:08,616 INFO L512 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2021-10-13 07:24:08,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:08,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:09,029 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:09,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1219730726, now seen corresponding path program 1 times [2021-10-13 07:24:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:09,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686670647] [2021-10-13 07:24:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:09,030 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:09,031 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:09,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:24:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:24:09,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:24:09,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:24:09,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:09,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686670647] [2021-10-13 07:24:09,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686670647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:09,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:24:09,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:24:09,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843520669] [2021-10-13 07:24:09,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:24:09,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:24:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:09,547 INFO L87 Difference]: Start difference. First operand 163 states and 211 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) [2021-10-13 07:24:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:09,604 INFO L93 Difference]: Finished difference Result 226 states and 289 transitions. [2021-10-13 07:24:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:24:09,604 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 44 [2021-10-13 07:24:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:09,605 INFO L225 Difference]: With dead ends: 226 [2021-10-13 07:24:09,605 INFO L226 Difference]: Without dead ends: 66 [2021-10-13 07:24:09,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:24:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-13 07:24:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-13 07:24:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 65 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-10-13 07:24:09,611 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2021-10-13 07:24:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:09,611 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-10-13 07:24:09,611 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) [2021-10-13 07:24:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-10-13 07:24:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 07:24:09,612 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:24:09,612 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-13 07:24:09,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:09,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:09,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:24:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:24:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1507050851, now seen corresponding path program 1 times [2021-10-13 07:24:09,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:24:09,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622637383] [2021-10-13 07:24:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:09,825 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:24:09,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:24:09,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:24:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:24:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:10,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:24:10,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:10,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:24:10,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:24:10,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622637383] [2021-10-13 07:24:10,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622637383] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:24:10,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1654152208] [2021-10-13 07:24:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:24:10,478 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:24:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:24:10,479 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:24:10,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-13 07:24:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:24:10,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:24:10,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:24:11,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:11,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:24:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 07:24:11,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1654152208] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:24:11,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:24:11,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [5, 5] total 14 [2021-10-13 07:24:11,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401288158] [2021-10-13 07:24:11,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:24:11,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:24:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:24:11,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 07:24:11,424 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:24:11,619 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2021-10-13 07:24:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:24:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 07:24:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:24:11,619 INFO L225 Difference]: With dead ends: 69 [2021-10-13 07:24:11,619 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:24:11,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 286.0ms TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:24:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:24:11,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:24:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:24:11,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-10-13 07:24:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:24:11,620 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:24:11,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:24:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:24:11,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:24:11,623 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:24:11,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:24:11,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 07:24:12,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:24:12,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:24:12,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 244) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 256) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 203) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2021-10-13 07:24:12,288 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-10-13 07:24:12,289 INFO L857 garLoopResultBuilder]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2021-10-13 07:24:12,289 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2021-10-13 07:24:12,289 INFO L857 garLoopResultBuilder]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2021-10-13 07:24:12,289 INFO L853 garLoopResultBuilder]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m (_ bv0 32)) (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0)) [2021-10-13 07:24:12,289 INFO L853 garLoopResultBuilder]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,289 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,290 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,290 INFO L857 garLoopResultBuilder]: For program point L187(lines 187 192) no Hoare annotation was computed. [2021-10-13 07:24:12,290 INFO L857 garLoopResultBuilder]: For program point L171(lines 171 176) no Hoare annotation was computed. [2021-10-13 07:24:12,290 INFO L853 garLoopResultBuilder]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~m (_ bv0 32)) (= (_ bv0 32) ULTIMATE.start_base2flt_~__retres4~0) (= |ULTIMATE.start_base2flt_#res| (_ bv0 32))) [2021-10-13 07:24:12,290 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:24:12,299 INFO L853 garLoopResultBuilder]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,299 INFO L853 garLoopResultBuilder]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2021-10-13 07:24:12,299 INFO L853 garLoopResultBuilder]: At program point L72-2(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,300 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:24:12,300 INFO L853 garLoopResultBuilder]: At program point L72-3(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,300 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 29 44) the Hoare annotation is: (and (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32)) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) [2021-10-13 07:24:12,300 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:24:12,300 INFO L853 garLoopResultBuilder]: At program point L39-5(lines 29 44) the Hoare annotation is: (and (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32)) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) [2021-10-13 07:24:12,301 INFO L857 garLoopResultBuilder]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2021-10-13 07:24:12,301 INFO L853 garLoopResultBuilder]: At program point L39-7(lines 29 44) the Hoare annotation is: (and (bvult ULTIMATE.start_base2flt_~m (_ bv16777216 32)) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) [2021-10-13 07:24:12,301 INFO L857 garLoopResultBuilder]: For program point L238(lines 238 242) no Hoare annotation was computed. [2021-10-13 07:24:12,301 INFO L857 garLoopResultBuilder]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2021-10-13 07:24:12,301 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-13 07:24:12,301 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:24:12,302 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-13 07:24:12,302 INFO L853 garLoopResultBuilder]: At program point L208(lines 149 210) the Hoare annotation is: (or (= (bvadd ULTIMATE.start_main_~sa~0 (_ bv1 32)) (_ bv0 32)) (and (= ULTIMATE.start_main_~sa~0 (_ bv1 32)) (= ULTIMATE.start_main_~tmp~2 (_ bv1 32))) (and (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (= ULTIMATE.start_mulflt_~__retres10~1 (_ bv0 32)))) [2021-10-13 07:24:12,302 INFO L857 garLoopResultBuilder]: For program point L27(lines 27 67) no Hoare annotation was computed. [2021-10-13 07:24:12,302 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2021-10-13 07:24:12,302 INFO L857 garLoopResultBuilder]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2021-10-13 07:24:12,303 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2021-10-13 07:24:12,303 INFO L853 garLoopResultBuilder]: At program point L209(lines 139 211) the Hoare annotation is: (or (= (bvadd ULTIMATE.start_main_~sa~0 (_ bv1 32)) (_ bv0 32)) (and (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) (= ULTIMATE.start_mulflt_~__retres10~1 (_ bv0 32)) (= |ULTIMATE.start_mulflt_#res| (_ bv0 32))) (and (= ULTIMATE.start_main_~sa~0 (_ bv1 32)) (= ULTIMATE.start_main_~tmp~2 (_ bv1 32)))) [2021-10-13 07:24:12,303 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:24:12,303 INFO L857 garLoopResultBuilder]: For program point L177(lines 177 182) no Hoare annotation was computed. [2021-10-13 07:24:12,303 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2021-10-13 07:24:12,303 INFO L857 garLoopResultBuilder]: For program point L30(lines 29 44) no Hoare annotation was computed. [2021-10-13 07:24:12,304 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2021-10-13 07:24:12,304 INFO L857 garLoopResultBuilder]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2021-10-13 07:24:12,304 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2021-10-13 07:24:12,304 INFO L853 garLoopResultBuilder]: At program point L65(lines 27 67) the Hoare annotation is: false [2021-10-13 07:24:12,304 INFO L853 garLoopResultBuilder]: At program point L65-1(lines 27 67) the Hoare annotation is: (and (not (= ULTIMATE.start_base2flt_~m (_ bv0 32))) (= ULTIMATE.start_main_~zero~0 (_ bv0 32))) [2021-10-13 07:24:12,304 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:24:12,305 INFO L853 garLoopResultBuilder]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,305 INFO L853 garLoopResultBuilder]: At program point L65-3(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,305 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2021-10-13 07:24:12,305 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2021-10-13 07:24:12,305 INFO L853 garLoopResultBuilder]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2021-10-13 07:24:12,306 INFO L853 garLoopResultBuilder]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,306 INFO L853 garLoopResultBuilder]: At program point L49-11(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 (_ bv0 32)) [2021-10-13 07:24:12,306 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 264) no Hoare annotation was computed. [2021-10-13 07:24:12,306 INFO L860 garLoopResultBuilder]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2021-10-13 07:24:12,306 INFO L857 garLoopResultBuilder]: For program point L50(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,306 INFO L857 garLoopResultBuilder]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L249(lines 249 258) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 156) no Hoare annotation was computed. [2021-10-13 07:24:12,307 INFO L857 garLoopResultBuilder]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2021-10-13 07:24:12,308 INFO L857 garLoopResultBuilder]: For program point L51(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,308 INFO L857 garLoopResultBuilder]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,308 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,308 INFO L857 garLoopResultBuilder]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2021-10-13 07:24:12,308 INFO L860 garLoopResultBuilder]: At program point L266(lines 212 268) the Hoare annotation is: true [2021-10-13 07:24:12,313 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:24:12,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:24:12 BoogieIcfgContainer [2021-10-13 07:24:12,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:24:12,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:24:12,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:24:12,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:24:12,334 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:54" (3/4) ... [2021-10-13 07:24:12,337 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:24:12,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-13 07:24:12,354 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 07:24:12,354 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:24:12,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:24:12,382 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (m == 0bv32 && 0bv32 == __retres4) && \result == 0bv32 [2021-10-13 07:24:12,385 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~bvadd64(sa, 1bv32) == 0bv32 || ((zero == 0bv32 && __retres10 == 0bv32) && \result == 0bv32)) || (sa == 1bv32 && tmp == 1bv32) [2021-10-13 07:24:12,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:24:12,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:24:12,418 INFO L168 Benchmark]: Toolchain (without parser) took 18786.71 ms. Allocated memory was 65.0 MB in the beginning and 102.8 MB in the end (delta: 37.7 MB). Free memory was 45.2 MB in the beginning and 72.1 MB in the end (delta: -26.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,419 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:24:12,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.95 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 45.9 MB in the end (delta: -889.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,420 INFO L168 Benchmark]: Boogie Preprocessor took 55.48 ms. Allocated memory is still 65.0 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:24:12,420 INFO L168 Benchmark]: RCFGBuilder took 576.00 ms. Allocated memory is still 65.0 MB. Free memory was 41.9 MB in the beginning and 25.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,421 INFO L168 Benchmark]: TraceAbstraction took 17659.59 ms. Allocated memory was 65.0 MB in the beginning and 102.8 MB in the end (delta: 37.7 MB). Free memory was 25.2 MB in the beginning and 77.5 MB in the end (delta: -52.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,421 INFO L168 Benchmark]: Witness Printer took 83.45 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 72.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:24:12,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.95 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 45.9 MB in the end (delta: -889.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.40 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.48 ms. Allocated memory is still 65.0 MB. Free memory was 43.7 MB in the beginning and 41.9 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 576.00 ms. Allocated memory is still 65.0 MB. Free memory was 41.9 MB in the beginning and 25.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17659.59 ms. Allocated memory was 65.0 MB in the beginning and 102.8 MB in the end (delta: 37.7 MB). Free memory was 25.2 MB in the beginning and 77.5 MB in the end (delta: -52.3 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * Witness Printer took 83.45 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 72.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 9]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17547.3ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 27.3ms, AutomataDifference: 1703.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 263.5ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1002 SDtfs, 790 SDslu, 2713 SDs, 0 SdLazy, 653 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 745.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1563 GetRequests, 1441 SyntacticMatches, 5 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1342.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 136.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 64 NumberOfFragments, 125 HoareAnnotationTreeSize, 24 FomulaSimplifications, 577 FormulaSimplificationTreeSizeReduction, 129.6ms HoareSimplificationTime, 24 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 124.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 257.3ms SsaConstructionTime, 624.9ms SatisfiabilityAnalysisTime, 5657.9ms InterpolantComputationTime, 787 NumberOfCodeBlocks, 787 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1532 ConstructedInterpolants, 0 QuantifiedInterpolants, 2741 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1947 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 42 InterpolantComputations, 24 PerfectInterpolantSequences, 132/258 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ~bvult32(m, 16777216bv32) && zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: !(m == 0bv32) && zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: m == 0bv32 && 0bv32 == __retres4 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (~bvadd64(sa, 1bv32) == 0bv32 || (sa == 1bv32 && tmp == 1bv32)) || (zero == 0bv32 && __retres10 == 0bv32) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (~bvadd64(sa, 1bv32) == 0bv32 || ((zero == 0bv32 && __retres10 == 0bv32) && \result == 0bv32)) || (sa == 1bv32 && tmp == 1bv32) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ~bvult32(m, 16777216bv32) && zero == 0bv32 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0bv32 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (m == 0bv32 && 0bv32 == __retres4) && \result == 0bv32 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ~bvult32(m, 16777216bv32) && zero == 0bv32 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:24:12,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4caa8d53-23de-47da-9ceb-2927ec1941bc/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...